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CN110469833A - A kind of biomass steam generator - Google Patents

A kind of biomass steam generator Download PDF

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Publication number
CN110469833A
CN110469833A CN201910659989.XA CN201910659989A CN110469833A CN 110469833 A CN110469833 A CN 110469833A CN 201910659989 A CN201910659989 A CN 201910659989A CN 110469833 A CN110469833 A CN 110469833A
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CN
China
Prior art keywords
water
heat exchanger
outlet
cavity
chamber
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CN201910659989.XA
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Chinese (zh)
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CN110469833B (en
Inventor
赵达斌
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Zhangjiagang Tianyuan Machinery Manufacturer Co Ltd
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Zhangjiagang Tianyuan Machinery Manufacturer Co Ltd
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22STEAM GENERATION
    • F22BMETHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B31/00Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus
    • F22B31/08Installation of heat-exchange apparatus or of means in boilers for heating air supplied for combustion
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23KFEEDING FUEL TO COMBUSTION APPARATUS
    • F23K3/00Feeding or distributing of lump or pulverulent fuel to combustion apparatus
    • F23K3/02Pneumatic feeding arrangements, i.e. by air blast
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23KFEEDING FUEL TO COMBUSTION APPARATUS
    • F23K2203/00Feeding arrangements
    • F23K2203/20Feeding/conveying devices
    • F23K2203/201Feeding/conveying devices using pneumatic means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23KFEEDING FUEL TO COMBUSTION APPARATUS
    • F23K2203/00Feeding arrangements
    • F23K2203/20Feeding/conveying devices
    • F23K2203/202Feeding/conveying devices using screws

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

The invention discloses a kind of biomass steam generators, comprising: the combustion chamber with furnace chamber, the first sealing cavity of band vaporium and heat exchanger;Total exhanst gas outlet is offered in top of combustion chamber, offers feed inlet and air supply port respectively in sidewall of combustion chamber;The first gas inlet is offered in vaporium bottom, vaporium is located above combustion chamber, and the first gas inlet is connected to the sealing of total exhanst gas outlet;Water jacket group is provided in the first sealing cavity;The first exhanst gas outlet is offered in vaporium side wall, the first exhanst gas outlet is connected with the second gas inlet of heat exchanger, and the second smoke outlet of heat exchanger is provided with air-introduced machine;The water outlet of heat exchanger passes sequentially through water inlet pipe, water pump, outlet pipe and is connected to water jacket group, and successively hermetically passing vaporium top through-hole protrudes into water jacket group the steam inlet pipe of gas bag.Above-mentioned biomass steam generator structure is simple, it is compact, occupy little space, biomass fuel combustion is abundant and heat exchanger effectiveness is high.

Description

A kind of biomass steam generator
Technical field
The present invention relates to biomass boiler technology field more particularly to a kind of biomass steam generators.
Background technique
Biomass boiler is because with operating cost, low, energy-saving and environmental protection (can effectively reduce the consumption of the energy, reduce titanium dioxide Carbon, sulfur dioxide and oxynitrides discharge, significantly improve environment) the advantages that and it is be deeply loved by everyone, country also weight Point advocates biomass boiler and biomass boiler combustion technology energetically.
Biomass steam generator is one of biomass boiler, and biomass steam generator is to utilize biomass fuel The thermal energy that burning generates is heated as water the heat-exchange apparatus of steam.Structure is complicated for existing biomass steam generator, accounts for Big with space, biomass fuel combustion is insufficient, efficiency of combustion is lower when work, causes waste of fuel, and biomass combustion produces Heat exchanger effectiveness is not high during raw thermal energy is exchanged with water, and thermal energy waste is extremely serious.
Summary of the invention
The technical issues of solving needed for of the invention is: provide a kind of structure is simple, compact, biomass fuel combustion sufficiently and The high biomass steam generator of heat exchanger effectiveness.
To solve the above problems, the technical solution adopted by the present invention is that: a kind of biomass steam generator, packet Include: the combustion chamber with furnace chamber, the first sealing cavity of band vaporium and heat exchanger;It offers in top of combustion chamber and is connected with furnace chamber Logical total exhanst gas outlet offers the feed inlet being connected with furnace chamber and air supply port in sidewall of combustion chamber respectively;In steam Room bottom offers the first gas inlet being connected with the first sealing cavity, and vaporium is located above combustion chamber, and the first cigarette Gas import is connected to the sealing of total exhanst gas outlet;Water jacket group is provided in the first sealing cavity, the water jacket group includes: top box Lower box body, rectangular drum like inner water sleeve, rectangular drum like outer water jacket and be set at the first gas inlet, the upper box and Lower box is the sealed rectangular cavity cabinet with middle part through hole, and outer water jacket is sheathed on inner water sleeve, and outer water jacket and interior water The flue gas interlayer passed through for flue gas is formed between set;It is connect at the top of inner water sleeve with upper box sealed bottom, and at the top of inner water sleeve Water outlet is connected with the sealed rectangular chamber of upper box, at least one first exhaust gases passes, interior water are offered at the top of inner water sleeve Flue gas in the interior barrel chamber of set is flowed into flue gas interlayer by each first exhaust gases passes;Outer water jacket top and upper box sealed bottom Connection, and the water outlet at the top of outer water jacket is connected with the sealed rectangular chamber of upper box;Inner water sleeve bottom and lower box top are close Envelope connection, and the water inlet of inner water sleeve bottom is connected with the sealed rectangular chamber of lower box;Outer water jacket bottom and lower box bottom Be tightly connected, and the water inlet of outer water jacket bottom is connected with the sealed rectangular chamber of lower box, outer water jacket bottom offer to Lack second exhaust gases passes, the flue gas in flue gas interlayer is closed by first outside the outer water jacket of each second exhaust gases passes inflow In cavity;Offer the first exhanst gas outlet being connected with the first closed cavity outside outer water jacket in vaporium side wall, first Exhanst gas outlet is connected with the second gas inlet of heat exchanger, and the second smoke outlet of heat exchanger is provided with air-introduced machine;It changes The water outlet of hot device passes sequentially through water inlet pipe, water pump, outlet pipe and is connected to the sealed rectangular chamber of lower box, the steam inlet of gas bag It manages through-hole at the top of successively hermetically passing vaporium, protruded into the sealed rectangular chamber of upper box after through-hole at the top of upper box.
Further, a kind of biomass steam generator above-mentioned, wherein the rectangular drum like inner water sleeve and rectangular cylinder The outer water jacket of shape is film water cold wall structure;Each first exhaust gases passes are opened in the fin top of rectangular drum like inner water sleeve respectively, Each second exhaust gases passes are opened in the fin lower part of the outer water jacket of rectangular drum like respectively.
Further, a kind of biomass steam generator above-mentioned, wherein the vaporium includes internal chamber wall and exocoel Wall forms water jacket samdwich between internal chamber wall and outer chamber wall;Offer the interlayer being connected with water jacket samdwich respectively in outer chamber wall The water outlet of water inlet and interlayer water outlet, heat exchanger is connected by connecting tube with interlayer water inlet, and interlayer water outlet passes through Water inlet pipe, water pump, outlet pipe are connected to the sealed rectangular chamber of lower box.
Further, a kind of biomass steam generator above-mentioned, wherein water tank passes through radiator drain and heat exchanger Water inlet connection, offers the water jacket recovery port being connected to water jacket samdwich at the top of the outer chamber wall of vaporium, and water jacket recovery port is logical Water jacket recovery tube is crossed to be connected to water tank.
Further, a kind of biomass steam generator above-mentioned, wherein the water outlet of gas bag passes through return pipe and nowel The sealed rectangular chamber of body is connected to;The water that steam in gas bag separates after steam-water separation is returned by water outlet, the return pipe of gas bag Into the sealed rectangular chamber of lower box.
Further, a kind of biomass steam generator above-mentioned, wherein feed pipe, spiral are provided at feed inlet The air outlet of the delivery outlet of conveyer and the first blower passes through feed pipe and is connected with feed inlet;Pass through the wind-force of the first blower It will be from the furnace chamber that the biomass fuel that the delivery outlet of screw conveyor exports is blown into combustion chamber.
Further, a kind of biomass steam generator above-mentioned, wherein be provided at the feed inlet of screw conveyor Feed hopper.
Further, a kind of biomass steam generator above-mentioned, wherein the air outlet of air supply port and the second blower It is connected.
Further, a kind of biomass steam generator above-mentioned, wherein the heat exchanger is the second sealing cavity of band Shell, be from top to bottom arranged at intervals with the first demarcation plate and the second demarcation plate in the second sealing cavity, the first demarcation plate and Second sealing cavity is separated into three independent cavitys: upper plenum, central cavity and lower cavity by the second demarcation plate;In upper plenum Middle part is vertically provided with third demarcation plate, and upper plenum is separated into two independent cavitys: the first cavity and by third demarcation plate Two cavitys;Second gas inlet of heat exchanger is connected with the first cavity, the second exhanst gas outlet of heat exchanger and the second cavity phase Connection;Interval is vertically provided with several first heat exchanger tubes in central cavity, and the smoke inlet of each first heat exchanger tube seals respectively to be worn It crosses and corresponds to through-hole on the first demarcation plate, is connected to the smoke inlet of each first heat exchanger tube with the first cavity;Each first heat exchanger tube goes out Mouth corresponds to through-hole on the second demarcation plate of hermetically passing respectively, the outlet flue of each first heat exchanger tube is made to be connected with lower cavity;In Interval is vertically provided with several second heat exchanger tubes in central cavity, and the outlet flue of each second heat exchanger tube is distinguished hermetically passing first and divided Through-hole is corresponded on partition, is connected to the outlet flue of each second heat exchanger tube with the second cavity;The smoke inlet of each second heat exchanger tube is distinguished Through-hole is corresponded on the second demarcation plate of hermetically passing, the smoke inlet of each second heat exchanger tube is made to be connected with lower cavity.
Further, a kind of biomass steam generator above-mentioned, wherein water tank passes through radiator drain and heat exchanger Water inlet connection, offers the Steam Recovery mouth being connected to central cavity, Steam Recovery mouth passes through Steam Recovery on heat exchangers Pipe is connected to water tank.
Further, a kind of biomass steam generator above-mentioned, wherein be additionally provided on vaporium for measuring water The liquidometer of height of water level in set group.
The beneficial effects of the present invention are: structure is simple, compact, occupy little space;Pass through screw conveyor, the when work One blower and the second blower coordinating operation, make the biomass fuel being blown into furnace chamber more full combustion;In addition, passing through water jacket group It is interior in a limited space to increase the transfer path of flue gas and water significantly with the combination settings of heat exchanger, greatly improve life The heat exchanger effectiveness of material vapors generator;In addition to this, the steaming generated in the central cavity of water jacket samdwich and heat exchanger is utilized Water in vapour preheating water tank also can be further improved the heat exchanger effectiveness of biomass steam generator.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of biomass steam generator of the present invention.
Fig. 2 is the flow schematic diagram for the flue gas that biomass fuel combustion generates.
Fig. 3 is the schematic diagram of internal structure of A-A section view direction vaporium in Fig. 1.
Fig. 4 is the structural schematic diagram of C-C section view direction in Fig. 3.
Fig. 5 is the structural schematic diagram of D-D section view direction in Fig. 3.
Fig. 6 is the schematic diagram of internal structure of B-B section view direction heat exchanger in Fig. 1.
Fig. 7 is the flow schematic diagram of water and steam.
Fig. 8 is the position view of Fig. 1 left view direction liquidometer.
Specific embodiment
With reference to the accompanying drawing and preferred embodiment further details of the technical solution described in the present invention.
Embodiment one
As depicted in figs. 1 and 2, a kind of biomass steam generator described in the present embodiment, comprising: the combustion chamber with furnace chamber 11 1, the vaporium 2 and heat exchanger 4 of the first sealing cavity of band 21.The total cigarette being connected with furnace chamber 11 is offered at the top of combustion chamber 1 Gas outlet 12, in combustion chamber, 1 side wall offers the feed inlet 13 and air supply port 14 being connected with furnace chamber 11, feed inlet respectively 13 are located in 1 upper portion side wall of combustion chamber, and air supply port 14 is located on 1 side wall of combustion chamber of 13 lower section of feed inlet.In feed inlet Be provided with feed pipe 15 at 13, the air outlet of the delivery outlet of screw conveyor 16 and the first blower 17 pass through feed pipe 15 with into Material mouth 13 is connected, and feed hopper 19 is additionally provided at the feed inlet of screw conveyor 16.To guarantee that biomass fuel can be in furnace It burns sufficiently in chamber 11, air supply port 14 and the air outlet of the second blower 18 is made to be connected, be furnace chamber by the second blower 18 Air needed for 11 supplement biomass combustions.
Biomass fuel is entered by feed hopper 19 in the feed inlet of screw conveyor 16, and the first blower 17 is then passed through Wind-force will be blown into burning in the burner hearth 11 of combustion chamber 1 from the biomass fuel that the delivery outlet of screw conveyor 16 exports and generate high temperature Flue gas.By 18 coordinating operation of the first blower 17 and the second blower, enable the biomass fuel being blown into furnace chamber 11 it is more fluffy, Full combustion, biomass fuel utilization rate is high, not will cause waste of fuel substantially.
As shown in figures 1 and 3, offered in 2 bottom of vaporium the first flue gas for being connected with the first sealing cavity 21 into Mouth 23, vaporium 2 is located at 1 top of combustion chamber, and the first gas inlet 23 is connected to the sealing of total exhanst gas outlet 12.In the first sealing It is provided with water jacket group 3 in cavity 21, the water jacket group 3 includes: upper box 31, rectangular drum like inner water sleeve 32, outside rectangular drum like Water jacket 33 and the lower box 34 being set at the first gas inlet 23, the upper box 31 and lower box 34 are that band middle part is passed through The sealed rectangular cavity cabinet of through-hole.Outer water jacket 33 is sheathed on inner water sleeve 32, and is formed between outer water jacket 33 and inner water sleeve 32 The flue gas interlayer 30 passed through for flue gas.
As shown in Figure 3 and Figure 5, be tightly connected at the top of 32 bottom of inner water sleeve and lower box 34, and 32 bottom of inner water sleeve into The mouth of a river is connected with the sealed rectangular chamber of lower box 34;32 top of inner water sleeve is connect with 31 sealed bottom of upper box, and inner water sleeve The water outlet at 32 tops is connected with the sealed rectangular chamber of upper box 31, at least one first cigarette is offered at the top of inner water sleeve 32 Gas channel 321, the flue gas in the interior barrel chamber 320 of inner water sleeve 32 are flowed into flue gas interlayer 30 by each first exhaust gases passes 321.
As shown in Figure 4 and Figure 5, outer 33 top of water jacket is connect with 31 sealed bottom of upper box, and going out at the top of outer water jacket 33 The mouth of a river is connected with the sealed rectangular chamber of upper box 31;Outer 33 bottom of water jacket is connect with 34 sealed bottom of lower box, and outer water jacket The water inlet of 33 bottoms is connected with the sealed rectangular chamber of lower box 34, offers at least one second cigarette in outer 33 bottom of water jacket Gas channel 331, the flue gas in flue gas interlayer 30 flow into the first confined air outside outer water jacket 33 by each second exhaust gases passes 331 In chamber 21.
Rectangular drum like inner water sleeve 32 described in the present embodiment and the outer water jacket 33 of rectangular drum like are film water cold wall structure. Fin panel casing is the tubular air hermetic structure being made of several spaced heat exchanger tubes and fin.
323 top of fin of inner water sleeve is connect with 31 sealed bottom of upper box, and each heat exchanger tube 322 of inner water sleeve exports difference It is protruded into the sealed rectangular chamber of upper box 31 after corresponding to through-hole on hermetically passing upper box 31.323 bottom of fin of inner water sleeve with It is tightly connected at the top of lower box 34, after corresponding to through-hole on 322 import of each heat exchanger tube difference hermetically passing lower box 34 of inner water sleeve It protrudes into the sealed rectangular chamber of lower box 34.Each first exhaust gases passes 321 are opened in the fin 323 of rectangular drum like inner water sleeve respectively Top.
For convenience of processing, following setting: the outlet of each heat exchanger tube 322 difference hermetically passing upper box of inner water sleeve can also be done It is protruded into the sealed rectangular chamber of upper box 31 after corresponding to through-hole on 31.It is stayed with 31 bottom of upper box at 323 top of fin of inner water sleeve At regular intervals, the gap between this section of spacing and each heat exchanger tube 322 of inner water sleeve constitutes several first exhaust gases passes 321.
333 top of fin of outer water jacket is connect with 31 sealed bottom of upper box, and each heat exchanger tube 332 of outer water jacket exports difference It is protruded into the sealed rectangular chamber of upper box 31 after corresponding to through-hole on hermetically passing upper box 31.333 bottom of fin of outer water jacket with It is tightly connected at the top of lower box 34, after corresponding to through-hole on 332 import of each heat exchanger tube difference hermetically passing lower box 34 of outer water jacket It protrudes into the sealed rectangular chamber of lower box 34.Each second exhaust gases passes 331 are opened in the fin 333 of the outer water jacket of rectangular drum like respectively Lower part.
For convenience of processing, following setting can also be done: 332 import of each heat exchanger tube difference hermetically passing lower box of outer water jacket It is protruded into the sealed rectangular chamber of lower box 34 after corresponding to through-hole on 34.333 base portion of fin of outer water jacket and 34 bottom of lower box Stay at regular intervals, several second exhaust gases passes 331 of gap composition between this section of spacing and each heat exchanger tube 332 of outer water jacket.
As shown in fig. 7, offering to be connected with the first closed cavity 21 outside outer water jacket 33 in 2 side wall of vaporium One exhanst gas outlet 24, the first exhanst gas outlet 24 is connected with the second gas inlet 41 of heat exchanger 4, in the second cigarette of heat exchanger 4 Air-introduced machine 5 is provided at gas outlet 42.
The water outlet 40 of heat exchanger 4 passes sequentially through the sealed rectangular of water inlet pipe 66, water pump 67, outlet pipe 68 and lower box 34 Chamber connection, the steam inlet 71 of gas bag 7 protrude into after managing successively 2 top through-hole of hermetically passing vaporium, 31 top through-hole of upper box In the sealed rectangular chamber of upper box 31.The water outlet 72 of gas bag 7 is connected to by return pipe 65 with the sealed rectangular chamber of lower box 34; The water that steam in gas bag 7 separates after steam-water separation returns to the close of lower box 34 by water outlet 72, the return pipe 65 of gas bag 7 It seals in rectangular cavity.The steam (vapor) outlet 73 that the steam that steam in gas bag 7 separates after steam-water separation then passes through packet 7 exports gas bag 7 Outside.
Flow of flue gas path:
Biomass fuel combustion generates high-temperature flue gas through in the first gas inlet 22, lower box 34 in the burner hearth 11 of combustion chamber 1 Portion's through hole enters in the interior barrel chamber 320 of inner water sleeve, passes through respectively after carrying out first time heat exchange with each heat exchanger tube 322 of inner water sleeve First exhaust gases passes 321 flow into flue gas interlayer 30.Each heat exchanger tube 332 of flue gas in flue gas interlayer 30 and outer water jacket into It is flowed into the first closed cavity 21 outside outer water jacket 33 after second of heat exchange of row by each second exhaust gases passes 331.It is located at Flue gas in first closed cavity 21 is entered in heat exchanger 4 by the first exhanst gas outlet 24, the second gas inlet 41 carries out third Secondary heat exchange, the flue gas after carrying out third time heat exchange is successively from the outlet air of the second exhanst gas outlet 42, air-introduced machine 5 of heat exchanger 4 Mouth 51 is discharged outside heat exchangers 4.
Water flowing path:
Water carries out after heat exchange from changing from 49 inflow heat exchanger 4 of water inlet of heat exchanger 4 with the flue gas being located in heat exchanger 4 The water outlet 40 of hot device 4 flows out, and then passes sequentially through the sealing square that water inlet pipe 66, water pump 67, outlet pipe 68 enter lower box 34 In shape chamber, into the water in the sealed rectangular chamber of lower box 34 respectively enters each heat exchanger tube 322 of inner water sleeve, outer water jacket respectively changes In heat pipe 332, the steaming that is generated after water in each heat exchanger tube 322 of inner water sleeve, each heat exchanger tube 332 of outer water jacket and flue gas heat exchange Vapour then passes through the sealed rectangular chamber of upper box 31, the steam inlet 71 of gas bag 7 enters in gas bag 7 and carries out gas-liquid separation, gas-liquid point From steam exported by the steam (vapor) outlet 73 of gas bag 7, the water of gas-liquid separation then passes through the water outlet 72 of gas bag 7, return pipe 65 It returns in the sealed rectangular chamber of lower box 34.
As shown in figure 8, the liquid for measuring height of water level in water jacket group 3 is additionally provided in the present embodiment on vaporium 2 Position meter 100.Specifically lower box can be protruded into a vertically arranged liquidometer connecting tube 69, the sealing of 69 lower end of liquidometer connecting tube In 34 sealed rectangular chamber, 69 upper end of liquidometer connecting tube is higher than water jacket group 3, can usually connect 69 upper end of liquidometer connecting tube At the water outlet 72 of gas bag 7.Liquidometer 100 is set in liquidometer connecting tube 69.
Embodiment two
The present embodiment and embodiment one the difference is that: the present embodiment also adds water jacket folder on the basis of example 1 Layer, specifically:
As shown in fig. 7, the vaporium 2 includes internal chamber wall and outer chamber wall, water jacket samdwich is formed between internal chamber wall and outer chamber wall 22.Offer the interlayer water inlet 25 and interlayer water outlet being connected with water jacket samdwich 22 respectively in the outer chamber wall of vaporium 2 26, the water outlet 40 of heat exchanger 4 is connected by connecting tube 64 with interlayer water inlet 25, and interlayer water outlet 26 is by into water inlet pipe 66, water pump 67, outlet pipe 68 are connected to the sealed rectangular chamber of lower box 34.
Water tank 8 is connected to by radiator drain 61 with the water inlet 49 of heat exchanger 4, is opened at the top of the outer chamber wall of vaporium 2 Equipped with the water jacket recovery port being connected to water jacket samdwich 22, water jacket recovery port is connected to by water jacket recovery tube 63 with water tank 8, by water jacket Steam in interlayer 22 is introduced into water tank 8, the water in preheating water tank 8.
Flow of flue gas path:
Biomass fuel combustion generates high-temperature flue gas through in the first gas inlet 22, lower box 34 in the burner hearth 11 of combustion chamber 1 Portion's through hole enters in the interior barrel chamber 320 of inner water sleeve, passes through respectively after carrying out first time heat exchange with each heat exchanger tube 322 of inner water sleeve First exhaust gases passes 321 flow into flue gas interlayer 30.Each heat exchanger tube 332 of flue gas in flue gas interlayer 30 and outer water jacket into It is flowed into the first closed cavity 21 outside outer water jacket 33 after second of heat exchange of row by each second exhaust gases passes 331.It is located at Flue gas in first closed cavity 21 and the water in water jacket samdwich 22 carry out after third time heat exchange by the first exhanst gas outlet 24, Second gas inlet 41, which enters in heat exchanger 4, carries out the 4th heat exchange, and the flue gas after the 4th heat exchange of progress is successively from changing Second exhanst gas outlet 42 of hot device 4, the air outlet 51 of air-introduced machine 5 are discharged outside heat exchanger 4.
Water flowing path:
Water carries out after heat exchange from changing from 49 inflow heat exchanger 4 of water inlet of heat exchanger 4 with the flue gas being located in heat exchanger 4 The water outlet 40 of hot device 4 flows out, and then passes sequentially through connecting tube 64, interlayer water inlet 25 enters in water jacket samdwich 22, and is located at Interlayer water outlet 26, water inlet pipe 66, water are passed sequentially through after the flue gas heat exchange in the first closed cavity 21 outside outer water jacket 33 Pump 67, outlet pipe 68 enter lower box 34 sealed rectangular chamber in, into the water in the sealed rectangular chamber of lower box 34 respectively into Enter each heat exchanger tube 322 of inner water sleeve, in each heat exchanger tube 332 of outer water jacket, each heat exchanger tube 322 of inner water sleeve, outer water jacket respectively change The steam generated after water in heat pipe 332 and flue gas heat exchange then pass through the sealed rectangular chamber of upper box 31, gas bag 7 steam into Mouth 71, which enters in gas bag 7, carries out gas-liquid separation, and the steam of gas-liquid separation is exported by the steam (vapor) outlet 73 of gas bag 7, gas-liquid separation Water then pass through the water outlet 72 of gas bag 7, return pipe 65 returns in the sealed rectangular chamber of lower box 34.
Embodiment three
The present embodiment with embodiment one or embodiment two the difference is that the specific structure in heat exchanging device 4 is configured, Specifically:
As shown in Figure 2 and Figure 6, the heat exchanger 4 be the second sealing cavity of band shell, in the second sealing cavity by up to Under be arranged at intervals with the first demarcation plate 92 and the second demarcation plate 93, the first demarcation plate 92 and the second demarcation plate 93 are empty by the second sealing Chamber is separated into the independent cavity in upper, middle and lower three: upper plenum, central cavity 48 and lower cavity 45.It is vertically set in the middle part of upper plenum It is equipped with third demarcation plate 91, upper plenum is separated into two independent cavitys by third demarcation plate 91: the first cavity 43 and second is empty Chamber 44.Second gas inlet 41 of heat exchanger 4 is connected with the first cavity 43, the second exhanst gas outlet 42 and second of heat exchanger 4 Cavity 44 is connected.
Interval is vertically provided with several first heat exchanger tubes 46, the smoke inlet point of each first heat exchanger tube 46 in central cavity 48 Through-hole is corresponded on other the first demarcation plate of hermetically passing 92, is connected to the smoke inlet of each first heat exchanger tube 46 with the first cavity 43;Respectively The smoke that the outlet flue of first heat exchanger tube 46 corresponds to through-hole, makes each first heat exchanger tube 46 on the second demarcation plate of hermetically passing 93 respectively Mouth is connected with lower cavity 45.
Interval is vertically provided with several second heat exchanger tubes 47, the outlet flue point of each second heat exchanger tube 47 in central cavity 48 Through-hole is corresponded on other the first demarcation plate of hermetically passing 92, is connected to the outlet flue of each second heat exchanger tube 47 with the second cavity 44;Respectively The smoke inlet of second heat exchanger tube 47 correspond on the second demarcation plate of hermetically passing 93 respectively through-hole, make each second heat exchanger tube 47 into cigarette Mouth is connected with lower cavity 45.
Water tank 8 is connected to by radiator drain 61 with the water inlet 49 of heat exchanger 4, is offered on heat exchanger 4 and middle part The Steam Recovery mouth 401 of cavity connection, Steam Recovery mouth 401 are connected to by steam recovery pipe 62 with water tank 8.By central cavity 48 In steam be introduced into water tank 8, the water in preheating water tank 8.
Flow of flue gas path in heat exchanger 4:
The flue gas entered from the second gas inlet 41 of heat exchanger 4 flows into the first cavity 43, then passes through each first heat exchanger tube 46 enter in lower cavity 45, and flue gas carries out primary heat with the water being located in central cavity 48 when flowing through each first heat exchanger tube 46 and hands over It changes;Flue gas in lower cavity 45 is flowed into the second cavity 44 by each second heat exchanger tube 47, and flue gas is changed flowing through each second Heat exchange is carried out again with the water being located in central cavity 48 when heat pipe 67;Flue gas in the second cavity 44 is through the second flue gas The air outlet 51 for exporting 42, air-introduced machine 5 is discharged outside heat exchanger.
Water flowing path in heat exchanger 4:
Water is changed from the central cavity 48 of 49 inflow heat exchanger 4 of water inlet of heat exchanger 4 with each first heat exchanger tube 46, each second After 47 heat exchange of heat pipe outside the water outlet 40 of heat exchanger 4 discharge heat exchanger 4.
The above is only presently preferred embodiments of the present invention, is not intended to limit the invention in any other form, and Any modification made by according to the technical essence of the invention or equivalent variations, still fall within the scope of protection of present invention.
The invention has the advantages that structure is simple, compact, occupy little space;Pass through screw conveyor 16, the first wind when work 18 coordinating operation of machine 17 and the second blower, makes the biomass fuel being blown into furnace chamber 11 more full combustion;In addition, passing through water jacket The combination settings of group 3 and heat exchanger 4, it is interior in a limited space to increase the transfer path of flue gas and water significantly, it greatlys improve The heat exchanger effectiveness of biomass steam generator;In addition to this, using in the central cavity 48 of water jacket samdwich 22 and heat exchanger 4 Water in the steam preheating water tank 8 of generation, also can be further improved the heat exchanger effectiveness of biomass steam generator.

Claims (10)

1. a kind of biomass steam generator, comprising: the combustion chamber with furnace chamber, it is characterised in that: further include that band first seals sky The vaporium and heat exchanger of chamber;The total exhanst gas outlet being connected with furnace chamber is offered in top of combustion chamber, in sidewall of combustion chamber point The feed inlet being connected with furnace chamber and air supply port are not offered;It offers in vaporium bottom and is connected with the first sealing cavity The first logical gas inlet, vaporium are located above combustion chamber, and the first gas inlet is connected to the sealing of total exhanst gas outlet; Water jacket group is provided in one sealing cavity, the water jacket group includes: upper box, rectangular drum like inner water sleeve, the outer water of rectangular drum like The lower box for covering and being set at the first gas inlet, the upper box and lower box are the sealing square with middle part through hole Shape cavity cabinet, outer water jacket are sheathed on inner water sleeve, and the flue gas interlayer passed through for flue gas is formed between outer water jacket and inner water sleeve; It is connect at the top of inner water sleeve with upper box sealed bottom, and the water outlet at the top of inner water sleeve is connected with the sealed rectangular chamber of upper box It is logical, at least one first exhaust gases passes is offered at the top of inner water sleeve, the flue gas in the interior barrel chamber of inner water sleeve passes through each first cigarette Gas channel flows into flue gas interlayer;Connect at the top of outer water jacket with upper box sealed bottom, and the water outlet at the top of outer water jacket with it is upper The sealed rectangular chamber of cabinet is connected;Be tightly connected at the top of inner water sleeve bottom and lower box, and the water inlet of inner water sleeve bottom with The sealed rectangular chamber of lower box is connected;Outer water jacket bottom is connect with lower box sealed bottom, and the water inlet of outer water jacket bottom It is connected with the sealed rectangular chamber of lower box, at least one second exhaust gases passes is offered in outer water jacket bottom, in flue gas interlayer Flue gas flowed into the first closed cavity outside outer water jacket by each second exhaust gases passes;Vaporium side wall offer with outside Second gas inlet of the first exhanst gas outlet that the first closed cavity outside water jacket is connected, the first exhanst gas outlet and heat exchanger It is connected, the second smoke outlet of heat exchanger is provided with air-introduced machine;The water outlet of heat exchanger passes sequentially through water inlet pipe, water Pump, outlet pipe be connected to the sealed rectangular chamber of lower box, the steam inlet pipe of gas bag successively hermetically passing vaporium top through-hole, It is protruded into the sealed rectangular chamber of upper box after through-hole at the top of upper box.
2. a kind of biomass steam generator according to claim 1, it is characterised in that: the rectangular drum like inner water sleeve It is film water cold wall structure with water jacket outside rectangular drum like;Each first exhaust gases passes are opened in the fin of rectangular drum like inner water sleeve respectively Piece top, each second exhaust gases passes are opened in the fin lower part of the outer water jacket of rectangular drum like respectively.
3. a kind of biomass steam generator according to claim 1, it is characterised in that: the vaporium includes inner cavity Wall and outer chamber wall, form water jacket samdwich between internal chamber wall and outer chamber wall;It offers in outer chamber wall and is connected with water jacket samdwich respectively The water outlet of logical interlayer water inlet and interlayer water outlet, heat exchanger is connected by connecting tube with interlayer water inlet, and interlayer goes out The mouth of a river is connected to by water inlet pipe, water pump, outlet pipe with the sealed rectangular chamber of lower box.
4. a kind of biomass steam generator according to claim 3, it is characterised in that: water tank by radiator drain with The water inlet of heat exchanger is connected to, and the water jacket recovery port being connected to water jacket samdwich, water jacket are offered at the top of the outer chamber wall of vaporium Recovery port is connected to by water jacket recovery tube with water tank.
5. a kind of biomass steam generator according to claim 1,2 or 3, it is characterised in that: the water outlet of gas bag is logical Return pipe is crossed to be connected to the sealed rectangular chamber of lower box;The water that steam in gas bag separates after steam-water separation is gone out by gas bag The mouth of a river, return pipe return in the sealed rectangular chamber of lower box.
6. a kind of biomass steam generator according to claim 1,2 or 3, it is characterised in that: be arranged at feed inlet There is a feed pipe, the air outlet of the delivery outlet of screw conveyor and the first blower passes through feed pipe and is connected with feed inlet;Pass through The wind-force of first blower will be from the furnace chamber that the biomass fuel that the delivery outlet of screw conveyor exports is blown into combustion chamber;In spiral Feed hopper is additionally provided at the feed inlet of conveyer.
7. a kind of biomass steam generator according to claim 1,2 or 3, it is characterised in that: air supply port and The air outlet of two blowers is connected.
8. a kind of biomass steam generator according to claim 1, it is characterised in that: the heat exchanger is band second The shell of sealing cavity, is from top to bottom arranged at intervals with the first demarcation plate and the second demarcation plate in the second sealing cavity, and first Second sealing cavity is separated into three independent cavitys: upper plenum, central cavity and lower cavity by demarcation plate and the second demarcation plate; It is vertically provided with third demarcation plate in the middle part of upper plenum, upper plenum is separated into two independent cavitys by third demarcation plate: first Cavity and the second cavity;Second gas inlet of heat exchanger is connected with the first cavity, the second exhanst gas outlet of heat exchanger and Two cavitys are connected;Interval is vertically provided with several first heat exchanger tubes, the smoke inlet point of each first heat exchanger tube in central cavity Through-hole is corresponded on other the first demarcation plate of hermetically passing, is connected to the smoke inlet of each first heat exchanger tube with the first cavity;Each first changes The outlet flue of heat pipe corresponds to through-hole on the second demarcation plate of hermetically passing respectively, makes the outlet flue of each first heat exchanger tube and lower cavity phase Connection;Interval is vertically provided with several second heat exchanger tubes in central cavity, and the outlet flue of each second heat exchanger tube seals respectively to be worn It crosses and corresponds to through-hole on the first demarcation plate, is connected to the outlet flue of each second heat exchanger tube with the second cavity;Each second heat exchanger tube into Mouth corresponds to through-hole on the second demarcation plate of hermetically passing respectively, the smoke inlet of each second heat exchanger tube is made to be connected with lower cavity.
9. a kind of biomass steam generator according to claim 8, it is characterised in that: water tank by radiator drain with The water inlet of heat exchanger is connected to, and offers the Steam Recovery mouth being connected to central cavity on heat exchangers, Steam Recovery mouth passes through Steam recovery pipe is connected to water tank.
10. a kind of biomass steam generator according to claim 1, it is characterised in that: be additionally provided on vaporium For measuring the liquidometer of height of water level in water jacket group.
CN201910659989.XA 2019-07-22 2019-07-22 Biomass steam generator Active CN110469833B (en)

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CN111389083A (en) * 2020-03-25 2020-07-10 安徽博泰生物质气化设备科技有限公司 Glue-removing water quality recycling device of biomass combustion generator
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CN111389083A (en) * 2020-03-25 2020-07-10 安徽博泰生物质气化设备科技有限公司 Glue-removing water quality recycling device of biomass combustion generator
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