CN210711404U - Pyrolysis-gasification integrated device - Google Patents
Pyrolysis-gasification integrated device Download PDFInfo
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- CN210711404U CN210711404U CN201921720724.8U CN201921720724U CN210711404U CN 210711404 U CN210711404 U CN 210711404U CN 201921720724 U CN201921720724 U CN 201921720724U CN 210711404 U CN210711404 U CN 210711404U
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Abstract
A pyrolysis-gasification integrated device comprises a pyrolysis furnace communicated with each other, and a semicoke distributor with a transverse pipe for condensation is arranged between the pyrolysis furnace and the gasification furnace; a feed inlet is formed in the top end of the pyrolysis furnace, and a pyrolysis furnace gas outlet is formed in one side of the feed inlet; a gas outlet of the pyrolysis furnace is connected with the cyclone separator; the top outlet of the cyclone separator is connected with the distillation tower through an indirect constant cooler; a gasified gas outlet is formed in the gasification furnace and is connected with a desulfurization device; the gasification furnace is provided with a gasification nozzle communicated with the interior of the gasification furnace. The utility model realizes the function of upper pyrolysis and lower gasification in a furnace body. The pyrolysis furnace and the gasification furnace can be simultaneously fed, so that the pyrolysis and gasification efficiency is improved under the operating conditions of high temperature and high pressure, the gas production capacity of a unit of equipment is greatly enhanced, and the quality of coal gas and gasified gas is improved. The utility model adopts the high temperature pressurizing operation condition, and the heat efficiency is high; the granularity of the fed pulverized coal is small, the gasification reaction is fully carried out, and the byproducts are few.
Description
Technical Field
The utility model relates to a pyrolysis-gasification integrated device, which belongs to the technical field of coal gasification.
Background
The occurrence state of 'oil shortage, gas shortage and relative coal richness' in China determines that coal has an irreplaceable status in the economic development of China. The development of coal chemical industry, especially coal pyrolysis and coal gasification technology, is a basis for deep processing and utilization of coal, and has the characteristics of high efficiency, environmental protection and the like, so that the research on the coal pyrolysis and coal gasification technology in China is widely concerned.
With the continuous and deep research on coal pyrolysis and coal gasification technologies, technologies of pyrolyzing, coking, gasifying, liquefying and the like coal are widely reported according to the composition and structural characteristics of coal, but the low-rank coal reserves in China are large, and the technologies of pyrolyzing, gasifying and the like coal by taking inferior coal as a raw material have the disadvantages of long process flow, more equipment, high energy consumption, complex operation and the like.
In the existing coal pyrolysis technology, the burning quantity of generated semicoke is increased by dry distillation of ash fusion pulverized coal, the equipment size of a burning unit is required to be larger, and the equipment investment is increased; the pulverized coal pyrolysis technology which takes high-temperature water gas as a fluidized medium and a heat carrier of a pyrolysis raw material has higher requirements on the material of a gas compressor and the stable and long-period operation under a high-harsh environment, and the development of the technology is severely restricted; the pyrolysis technology based on the combustion of the circulating fluidized bed and taking high-temperature circulating ash as a heat carrier has the problems of high dust content of pyrolysis gas, pipeline blockage, difficulty in utilizing dust-containing tar and the like, and the high-temperature circulating ash is taken as the heat carrier and has low ash heat value, low density and low heat transfer efficiency. The coal gasification technology mainly comprises a coal water slurry gasification technology and a pulverized coal gasification technology, wherein the application of the pulverized coal gasification technology is wide, most of gasification furnaces are chilling operation flows, high-temperature sensible heat generated in the production process is difficult to effectively utilize, heat energy waste is caused, and the carbon content of fly ash carried in coal gas generated in the production process is high, so that energy waste is caused.
The invention provides a pulverized coal dry distillation device and a pulverized coal dry distillation method, which are provided by the invention CN 108893130A, and have no emission of flue gas, and the coke gasification generated gas can further synthesize methanol and light oil products, but the products contain tar and gas which are difficult to utilize, and the quality of the generated oil products is difficult to control, and the yield is not high.
The invention provides a coal pyrolysis gasification poly-generation device and a coal pyrolysis gasification poly-generation process based on a circulating fluidized bed, which are provided by the invention patent CN 103881761A, and aims to solve the problems that the pyrolysis dusty coal gas blocks a pipeline and dust-containing tar by using a moving bed gasification furnace as a purification device for pyrolyzing the dusty coal gas, but the moving bed pyrolyzer and the gasification furnace adopted by the process can not realize the rapid pyrolysis of the coal, the quality of the tar is difficult to effectively control, and the pyrolysis gasification efficiency is low.
The invention provides a pyrolysis gasification device and a process, which are provided by the Chinese invention patent CN 104789245A, wherein an ascending bed oxidation burner, a descending bed rapid pyrolyzer and a bubbling bed gasifier are connected by high-temperature circulating semicoke, so that the organic coupling of the reaction process is realized, but the defects of low heat transfer efficiency, small treatment capacity, complex process and the like still exist.
The invention of Chinese patent application CN 109233907A provides a coal and biomass mixed gas making system and a gas making method thereof, the invention realizes coal gasification and biomass pyrolysis in the same furnace body, in particular to a gasification reaction zone at the lower part of the furnace body realizes coal gasification, a pyrolysis zone at the upper part realizes biomass pyrolysis, the device greatly simplifies the process flow, avoids low heat transfer efficiency brought by high-temperature ash and pyrolysis coke, and is beneficial to the pyrolysis and gasification processes of reactants, but the gas reaction furnace has lower operation temperature/pressure and smaller production capacity, and the pipeline design of the pyrolysis zone at the upper part of the reaction furnace is easy to be blocked by the influence of the biomass raw material property, so that the system stability is poor.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems existing in the prior art, the utility model aims to provide a pyrolysis-gasification integrated device.
In order to achieve the above object, the utility model adopts the following technical scheme:
a pyrolysis-gasification integrated device comprises a pyrolysis furnace communicated with each other, and a semicoke distributor with a transverse pipe for condensation is arranged between the pyrolysis furnace and the gasification furnace;
a feed inlet is formed in the top end of the pyrolysis furnace, and a pyrolysis furnace gas outlet is formed in one side of the feed inlet; a gas outlet of the pyrolysis furnace is connected with the cyclone separator; the top outlet of the cyclone separator is connected with the distillation tower through an indirect constant cooler;
a gasified gas outlet is formed in the gasification furnace and is connected with a desulfurization device;
the gasification furnace is provided with a gasification nozzle communicated with the interior of the gasification furnace.
The utility model has the further improvement that the semicoke distributor with the horizontal pipe condensation is connected with the refractory brick lining, and comprises the horizontal pipes which are uniformly distributed; the horizontal pipes are in a triangular prism structure with the upper tip and the lower width, the distribution is uniform in crisscross arrangement, and square holes are formed among the horizontal pipes; the inside of the horizontal pipe is provided with a condenser pipe.
The utility model has the further improvement that the outlet at the bottom end of the cyclone separator is connected with the gasification nozzle; the inner wall of the gasification furnace is provided with a refractory brick lining, and a water-cooled wall is arranged inside the refractory brick lining.
The utility model discloses further improvement lies in, the inside water-cooled wall of firebrick lining and the condenser pipe of violently managing inside are linked together.
The utility model discloses further improvement lies in, is provided with the rotatory distributor in the pyrolysis oven, and the feed inlet is linked together with the rotatory distributor.
The utility model is further improved in that the indirect constant cooler comprises a first indirect constant cooler and a second indirect constant cooler, and the top parts of the first indirect constant cooler and the second indirect constant cooler are respectively provided with a spraying device;
the upper outlet of the side wall of the distillation tower is connected with the inlets at the top parts of the first indirect constant cooler and the second indirect constant cooler.
The utility model has the further improvement that the top outlet and the bottom outlet of the distillation tower are both connected with the tar collecting tank; the tar collecting tank comprises a light tar collecting tank and a heavy tar collecting tank from top to bottom.
The utility model discloses a further improvement lies in, and the gasifier bottom is provided with row's sediment device, arranges sediment device bottom and is provided with cooling back installation, and the cooling back installation bottom is provided with the ash groove.
The utility model discloses a further improvement lies in, the gasification nozzle is four to along gasifier circumference evenly distributed.
Compared with the prior art, the utility model following beneficial effect has:
1. the utility model realizes the function of upper pyrolysis and lower gasification in a furnace body. The pyrolysis furnace and the gasification furnace can be simultaneously fed, so that the pyrolysis and gasification efficiency is improved under the operating conditions of high temperature and high pressure, the gas production capacity of a unit of equipment is greatly enhanced, and the quality of coal gas and gasified gas is improved.
2. The raw material type selectivity is wide. The utility model discloses can make any kind of coal effective conversion, it can handle various coals such as anthracite, petroleum coke, bituminous coal and brown coal, and the utility model discloses used raw materials is not limited to the coal, also can use oil, living beings and including coal their two liang of mixtures.
3. High energy utilization rate and good environmental benefit. The utility model adopts the high temperature pressurizing operation condition, and the heat efficiency is high; the granularity of the fed pulverized coal is small, the gasification reaction is fully carried out, and the byproducts are few.
Drawings
The drawings drawn by the utility model are only used for matching with the specification content, and are not right for the utility model discloses do the qualification, so do not have technical essence meaning, the decoration of any structure, the adjustment of proportional relation or size, under the condition that does not influence the produced efficiency of the utility model, all should fall into the within range that the technical content that the utility model discloses reveals can cover.
FIG. 1 is a schematic view of a pyrolysis-gasification integrated apparatus of the present invention;
FIG. 2 is a top view of a semicoke distributor with cross tube condensation;
FIG. 3 is a schematic view of a cross tube arrangement;
FIG. 4 is a cross-sectional view of the cross tube;
in the figure, 1-the feed inlet; 2-rotating the distributor; 3-a semicoke distributor with horizontal tube condensation; 4-water cooling wall; 5-a gasified gas outlet; 6-refractory brick lining; 7-a gasification nozzle; 8-a circulating cooling device; 9-a slag discharge device; 10-ash groove; 11-a pyrolysis furnace gas outlet; 12-a cyclone separator; 13-a spraying device; 14-a first indirect constant cold device; 15-a second indirect constant-temperature cooler; 16-a distillation column; 17-a tar collection tank; 18-a first waste heat boiler; 19-a second waste heat boiler; 20-a desulfurization unit; 21-a gasified gas storage tank; 22-horizontal tube; 23-a condenser tube; 24-a pyrolysis furnace; 25-gasification furnace.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further explained with reference to the accompanying drawings and embodiments.
The terms "upper", "lower", "top" and "bottom" used in the present specification are for the sake of clarity only. The scope of the present invention is not limited to the extent that the present invention can be implemented, and changes or adjustments to the relative relationship thereof should be considered as the scope of the present invention without substantial technical changes.
Referring to fig. 1 and 2, a pyrolysis-gasification integrated apparatus of the present invention includes: a pyrolysis furnace 24, a gasification furnace 25 and a feeding port 1; a rotating distributor 2; a semicoke distributor 3 with cross-tube condensation; a water cooled wall 4; a gasified gas outlet 5; refractory brick lining 6; a gasification nozzle 7; a circulating cooling device 8; a slag discharge device 9; a slag chute 10; a pyrolysis furnace gas outlet 11; a cyclone 12; a spray device 13; a first indirect constant cooler 14; a second indirect constant cooler 15; a distillation column 16; a tar collection tank 17; a first waste heat boiler 18; a second waste heat boiler 19; a desulfurizer 20; a gasified gas storage tank 21; cross tubes 22 and condenser tubes 23.
Specifically, referring to fig. 1, the pyrolysis-gasification integrated apparatus includes, from top to bottom, a pyrolysis furnace 24, a gasification furnace 25, a circulating cooling device 8, and an ash tank 10; a semicoke distributor 3 with transverse pipe condensation is arranged between the pyrolysis furnace 24 and the gasification furnace 25; the circulating cooling device 8 is arranged at the bottom of the gasification furnace 25 and communicated with the gasification furnace 25, a slag discharging device 9 is arranged between the circulating cooling device 8 and the gasification furnace 25, and an ash groove 10 is arranged at the bottom of the circulating cooling device 8.
The top end of the pyrolysis furnace 24 is provided with a feed inlet 1, and one side of the feed inlet 1 is provided with a pyrolysis furnace gas outlet 11; a rotary distributor 2 is arranged in the pyrolysis furnace 24, and the feed inlet 1 is communicated with the rotary distributor 2; a gas outlet 11 of the pyrolysis furnace is connected with a cyclone separator 12; an outlet at the top end of the cyclone separator 12 is connected with an inlet at the bottom of the first indirect constant cooler 14, and an outlet at the top end of the first indirect constant cooler 14 is connected with an inlet at the bottom end of the second indirect constant cooler 15; the outlets at the bottom ends of the first indirect constant cooler 14 and the second indirect constant cooler 15 are connected with the inlet of the distillation tower 16; the top parts of the first indirect constant cooler 14 and the second indirect constant cooler 15 are respectively provided with a spraying device 13, and the upper outlet of the side wall of the distillation tower 16 is connected with the inlets at the top parts of the first indirect constant cooler 14 and the second indirect constant cooler 15; the top outlet and the bottom outlet of the distillation tower 16 are both connected with a tar collecting tank 17. The tar collecting tank 17 includes a light tar collecting tank and a heavy tar collecting tank from top to bottom.
A gasified gas outlet 5 is formed in the upper portion of the side wall of the gasification furnace 25, a gasification nozzle 7 is formed in the lower portion of the side wall of the gasification furnace 25, a circulating cooling device 8 is arranged at the bottom end of the gasification furnace, a slag discharging device 9 is located at an outlet at the bottom of the gasification furnace 25, and a slag groove 10 is formed in the bottom of the circulating cooling device 8; the gasified gas outlet 5 is sequentially connected with the first waste heat boiler 18 and the second waste heat boiler 19 in series, specifically, the gasified gas outlet 5 is connected with the bottom inlet of the first waste heat boiler 18, the top outlet of the first waste heat boiler 18 is connected with the bottom inlet of the second waste heat boiler 19, the top outlet of the second waste heat boiler 19 is connected with the bottom inlet of the desulfurization device 20, and the top outlet of the desulfurization device 20 is connected with the inlet of the gasified gas storage tank 21; the raw material and the gasifying agent enter a gasification furnace 25 through a gasification nozzle 7, and an outlet at the bottom end of the cyclone separator 12 is connected with the gasification nozzle 7; the inner wall of the gasification furnace 25 is provided with a refractory brick lining 6, and a water-cooled wall 4 is arranged in the refractory brick lining 6.
The gasification nozzles 7 are four nozzles uniformly distributed along the circumference of the gasification furnace 25.
Referring to fig. 2, the semicoke distributor 3 with horizontal tube condensation is connected with the refractory brick lining 6, and the semicoke distributor 3 with horizontal tube condensation comprises a plurality of horizontal tubes 22 which are uniformly distributed; referring to fig. 3 and 4, the transverse tube 22 is a triangular prism structure, the condenser tubes 23 are arranged inside the transverse tube 22, and the condenser tubes 23 are uniformly distributed in a criss-cross manner to form square holes.
The transverse tube 22 is made of the same material as the refractory brick lining 6.
Referring to fig. 1 and 2, the water cooled wall 4 inside the refractory brick lining 6 communicates with the condenser tubes 23 inside the cross tubes 22.
The utility model discloses a pyrolysis-gasification integrated technology, including following step:
(1) treating raw materials
After the raw material coal is dried, the raw material coal is crushed, ground and sieved to obtain coal dust with the particle size of less than or greater than 75 microns, which are respectively called coal dust-1 and coal dust-2.
(2) Gasification process
Mixing the coal dust-1 with a gasifying agent, and then leading the mixture to enter a gasification furnace 25 through a gasification nozzle 7, wherein the coal dust-1 and the gasifying agent are subjected to the high-temperature radiation effect of a refractory brick lining 6 in the gasification furnace 25 and rapidly undergo a series of complex physical and chemical processes such as preheating, dry distillation, pyrolysis combustion of volatile matters, gasification of carbon and the like to obtain high-temperature gasification gas mainly comprising carbon monoxide and hydrogen and slag; in the gasification process, the temperature in the gasification furnace 25 is maintained at 1100-1500 ℃ by controlling the addition amount of the raw material and the gasifying agent, the cooling efficiency of the water wall 4, and the like. Slag generated in the gasification process enters a circulating cooling device 8 through a slag discharging device 9 to be quenched, and the cooled slag is discharged into a slag groove 10. Part of high-temperature gasified gas generated in the gasification process upwards enters the pyrolysis furnace 24 to participate in the pyrolysis process, and the other part of the high-temperature gasified gas sequentially enters the first waste heat boiler 18 and the second waste heat boiler 19 through the gasified gas outlet 5 to be cooled for heat recovery; the cooled high-temperature gasified gas enters a desulfurizing device 20 for desulfurization and purification, and the purified gasified gas enters a gasified gas storage tank 21 for collection and storage.
(3) Pyrolysis process
Uniformly adding pulverized coal-2 into a pyrolysis furnace 24 through a feed inlet 1 and a rotary distributor 2, and pyrolyzing the pulverized coal-2 in the pyrolysis furnace 24 under the heating action of high-temperature gasification gas generated in the gasification process of a gasification furnace 25 to generate pyrolysis furnace gas and pyrolysis semicoke; in the pyrolysis process, the temperature of the pyrolysis furnace 24 is maintained at 500-800 ℃ by controlling the adding amount of the coal dust-2 and the gasification process. Pyrolysis semicoke produced in the pyrolysis process downwards passes through the semicoke distributor 3 with the transverse pipe for condensation and enters the gasification furnace 25 to participate in the gasification process, so that the pyrolysis and gasification integrated operation is realized.
Pyrolysis furnace gas generated in the pyrolysis process enters a cyclone separator 12 through a pyrolysis furnace gas outlet 11 for dust removal, high-temperature ash and the pyrolysis furnace gas after dust removal are generated through dust removal, the obtained high-temperature ash downwards passes through a bottom outlet of the cyclone separator 12 and enters a gasification furnace 25 together with coal dust-2 and a gasification agent through a nozzle 7, the pyrolysis furnace gas after dust removal sequentially enters a first indirect constant cooler 14 and a second indirect constant cooler 15 through a top outlet of the cyclone separator 12 for cooling and condensation, tar obtained after condensation enters a distillation tower 16 through the first indirect constant cooler 14 and the second indirect constant cooler 15 for distillation, medium tar obtained after distillation passes through an upper outlet of the distillation tower 16 and washes tar condensed by a spraying device 13 at the upper part in the first indirect constant cooler 14 and the second indirect constant cooler 15, and light tar and heavy tar obtained by distillation are collected in a light tar collecting tank and a heavy tar collecting tank through an upper outlet of the distillation tower 16 and a lower outlet of the distillation tower 16 respectively In the tar collection tank.
Through the steps, the pyrolysis and gasification reaction of the coal is realized, and the tar and the gasified gas are obtained. According to actual needs, the technological process of the device can be adjusted, for example, a gasification gas outlet can be selectively closed, and only tar is produced;
the temperature of the first indirect constant cooler 14 is controlled to be 30-50 ℃, and the temperature of the second indirect constant cooler 15 is controlled to be 10-20 ℃.
In the operation process of the pyrolysis-gasification integrated device, the pyrolysis temperature of the pyrolysis furnace 24 is controlled to be 800 ℃ plus 500 ℃, the gasification temperature of the gasification furnace 25 is controlled to be 1500 ℃ plus 1100 ℃, and the pressure of the furnace body is controlled to be 2-4 MPa.
The raw material in the pyrolysis-gasification integrated process is illustrated by taking coal as an example, but the raw material is not limited to coal and can be coal, oil, biomass or a mixture of two of the coal, the oil and the biomass; wherein the coal is not limited, the oil can be heavy coal tar, and the biomass can be agricultural and forestry waste and domestic garbage production;
the gasification agent comprises water vapor and oxygen, the gasification agent is a gasification agent commonly used in the field, and the proportion of the components of the gasification agent can be adjusted by a person skilled in the art according to the actual situation of field operation; the molar ratio of the water vapor to the oxygen of the gasifying agent is controlled to be 100 (1-10).
To illustrate the effectiveness of the present invention, the following examples use low rank bituminous coal and biomass as raw materials to perform the pyrolysis-gasification integrated process.
Example 1
a. Crushing, grinding and screening low-rank bituminous coal to obtain coal dust with the particle size of less than and more than 75 mu m, which are respectively called coal dust-1 and coal dust-2;
b. the coal dust-1 and the gasifying agent are used as raw materials of the gasification furnace 25 and enter the gasification furnace 25 of the pyrolysis-gasification integrated furnace through the gasification nozzle 7, the coal dust-1 and the gasifying agent are subjected to the high-temperature radiation effect of the refractory brick lining 6 in the gasification furnace 25 and rapidly undergo a series of complex physical and chemical processes such as preheating, dry distillation, pyrolysis and combustion of volatile matters, gasification of carbon and the like to obtain high-temperature gasification gas mainly comprising carbon monoxide and hydrogen and molten slag; the temperature of the gasification furnace 25 is controlled at 1100-1500 ℃;
c. b, enabling the molten slag generated in the gasification furnace 25 in the step b to downwards enter a circulating cooling device 8 through a slag discharging device 9 for slag quenching, and after quenching and solidification of the molten slag through the circulating cooling device 8, intercepting the molten slag in water, enabling the molten slag to fall into an ash slag groove 10 and discharging the molten slag at regular time;
d. b, enabling part of high-temperature gasified gas generated in the gasification furnace 25 in the step b to upwards enter the pyrolysis furnace 24 to participate in pyrolysis reaction; one part of the gasified gas enters a first waste heat boiler 18 and a second waste heat boiler 19 through a gasified gas outlet 5 to recover heat, the cooled gasified gas enters a desulfurization device 20 to be desulfurized, and the desulfurized gasified gas enters a gasified gas storage tank 21 to be collected and stored;
e. the coal dust-2 is added into the pyrolysis furnace 24 through the feed inlet 1 and the rotary distributor 2, and the high-temperature gasification gas entering the pyrolysis furnace 24 is used as a heat carrier to heat the coal dust-2 to pyrolyze the coal dust-2, so that the coal gas of the pyrolysis furnace and the pyrolysis semicoke are generated; the temperature of the pyrolysis furnace 24 is controlled at 500-800 ℃;
f. the pyrolysis semicoke generated in the step e enters a gasification furnace 25 downwards through a semicoke distributor 3 with a horizontal pipe for condensation to participate in gasification reaction;
g. the pyrolysis furnace gas generated in the step e enters a cyclone separator 12 through a pyrolysis furnace gas outlet 11 for dust removal, the separated high-temperature ash, the coal dust-1 and a gasifying agent enter a gasification furnace 25, the dedusted pyrolysis furnace gas is cooled and condensed through a first indirect constant temperature cooler 14 and a second indirect constant temperature cooler 15 to generate tar, the obtained tar enters a distillation tower 16 for distillation, the medium fraction is washed from the tar condensed by the pyrolysis furnace gas through an upper outlet of the distillation tower 16 through a spray device 13 on the first indirect constant temperature cooler 14 and the second indirect constant temperature cooler 15, and the light tar and the heavy tar are collected in a light tar collecting tank and a heavy tar collecting tank through top and bottom outlets of the distillation tower 16 respectively;
f. the pressure in the pyrolysis-gasification integrated furnace body is controlled to be 2-4 MPa.
In the step, effective components CO and H of the gasified gas from the gasification furnace 252Up to more than 90 percent and low methane content.
Example 2
This example provides a method of using low rank bituminous coal and biomass as raw materials, and changing the raw materials fed into the pyrolysis furnace 24 into ground and sieved biomass on the basis of example 1, and the pressure and temperature inside the furnace body are kept unchanged. The specific operation steps of this example are the same as those of example 1.
In example 2, the effective components of the gasified gas from the gasification furnace 25 include CO and H2And CH4In which CH4The volume content is about 8 percent.
The embodiment of the present invention is only to describe the preferred embodiment of the present invention, rather than to limit the concept and scope of the present invention, without departing from the design concept of the present invention, the skilled in the art will be right the technical scheme of the present invention makes various deformations or improvements, all should fall into the protection scope of the present invention.
Claims (9)
1. A pyrolysis-gasification integrated device is characterized by comprising a pyrolysis furnace (24) and a gasification furnace (25) which are communicated, wherein a semicoke distributor (3) with a transverse pipe for condensation is arranged between the pyrolysis furnace (24) and the gasification furnace (25);
the top end of the pyrolysis furnace (24) is provided with a feed inlet (1), and one side of the feed inlet (1) is provided with a pyrolysis furnace gas outlet (11); a gas outlet (11) of the pyrolysis furnace is connected with a cyclone separator (12); the top outlet of the cyclone separator (12) is connected with a distillation tower (16) through an indirect constant cooler;
a gasified gas outlet (5) is formed in the gasification furnace (25), and the gasified gas outlet (5) is connected with the desulfurization device (20);
the gasification furnace (25) is provided with a gasification nozzle (7) communicated with the inside of the gasification furnace (25).
2. A pyrolysis-gasification integrated unit according to claim 1, characterized in that the char distributor (3) with horizontal tube condensation is connected to the refractory brick lining (6), the char distributor (3) with horizontal tube condensation comprising evenly distributed horizontal tubes (22); the transverse pipes (22) are of a triangular prism structure with the upper tip and the lower part being wide, the distribution is uniform in crisscross arrangement, and square holes are formed among the transverse pipes (22); the inside of the transverse pipe (22) is provided with a condensation pipe (23).
3. A pyrolysis-gasification integrated apparatus according to claim 2, wherein the bottom outlet of the cyclone (12) is connected to the gasification nozzle (7); the inner wall of the gasification furnace (25) is provided with a refractory brick lining (6), and a water-cooled wall (4) is arranged inside the refractory brick lining (6).
4. A pyrolysis-gasification integrated apparatus according to claim 3, wherein the water wall (4) inside the refractory brick lining (6) is communicated with the condensation pipe (23) inside the horizontal pipe (22).
5. A pyrolysis-gasification integrated apparatus according to claim 1, wherein the pyrolysis furnace (24) is provided with a rotary distributor (2), and the feed inlet (1) is communicated with the rotary distributor (2).
6. A pyrolysis-gasification integrated apparatus according to claim 1, wherein the indirect constant cooler comprises a first indirect constant cooler (14) and a second indirect constant cooler (15), and the top of the inside of the first indirect constant cooler (14) and the second indirect constant cooler (15) is provided with a spraying device (13);
the upper outlet of the side wall of the distillation tower (16) is connected with the inlets of the tops of the first indirect constant cooler (14) and the second indirect constant cooler (15).
7. A pyrolysis-gasification integrated apparatus according to claim 1, wherein the top outlet and the bottom outlet of the distillation tower (16) are connected to a tar collecting tank (17); the tar collecting tank (17) comprises a light tar collecting tank and a heavy tar collecting tank from top to bottom.
8. A pyrolysis-gasification integrated device according to claim 1, wherein the bottom end of the gasification furnace (25) is provided with a slag discharging device (9), the bottom of the slag discharging device (9) is provided with a circulating cooling device (8), and the bottom of the circulating cooling device (8) is provided with an ash groove (10).
9. A pyrolysis-gasification integrated apparatus according to claim 1, wherein the number of gasification nozzles (7) is four, and the nozzles are uniformly distributed along the circumference of the gasification furnace (25).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921720724.8U CN210711404U (en) | 2019-10-14 | 2019-10-14 | Pyrolysis-gasification integrated device |
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| CN201921720724.8U CN210711404U (en) | 2019-10-14 | 2019-10-14 | Pyrolysis-gasification integrated device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110591745A (en) * | 2019-10-14 | 2019-12-20 | 西北大学 | Pyrolysis-gasification integrated device and process |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110591745A (en) * | 2019-10-14 | 2019-12-20 | 西北大学 | Pyrolysis-gasification integrated device and process |
| CN110591745B (en) * | 2019-10-14 | 2024-04-26 | 西北大学 | Pyrolysis-gasification integrated device and process |
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