CN214370122U

CN214370122U - Steam waste heat recycling system for aerated brick production

Info

Publication number: CN214370122U
Application number: CN202120358402.4U
Authority: CN
Inventors: 宿育铭
Original assignee: Huizhou Xinye Building Materials Co ltd
Current assignee: Huizhou Xinye Building Materials Co ltd
Priority date: 2021-02-07
Filing date: 2021-02-07
Publication date: 2021-10-08
Anticipated expiration: 2031-02-07

Abstract

The application relates to the technical field of aerated brick production equipment, in particular to a steam waste heat recycling system for aerated brick production, which comprises a still kettle, a heat exchanger and a boiler, wherein the still kettle is communicated with a steam outlet pipe and a steam inlet pipe; the steam outlet pipe is communicated with a steam inlet of the heat exchanger and is connected with an electric steam compressor; a liquid outlet is formed in the bottom of the heat exchanger and communicated with a feed inlet of the boiler, and a discharge outlet of the boiler is communicated with a steam inlet pipe; pipeline valves are arranged among the steam outlet pipe, the steam inlet pipe, the heat exchanger and the boiler. Through having set up electric steam compressor, the high temperature steam that will evaporate the pressure cauldron and produce is collected to the heat exchanger inside to convert the hydrothermal liquid under the effect of heat exchanger, can utilize the hydrothermal liquid so far, realized the utilization to high temperature steam, and the hydrothermal liquid becomes steam through the heating and can flow back to evaporating the inside use in order to carry out the autoclave of next cycle again, reduced the waste of the energy.

Description

Steam waste heat recycling system for aerated brick production

Technical Field

The application relates to the technical field of aerated brick production equipment, in particular to a steam waste heat recycling system for aerated brick production.

Background

The aerated brick, also called as autoclaved aerated concrete block, is a porous concrete product prepared by using fly ash, lime, cement, gypsum, slag and the like as main raw materials, adding a proper amount of gas former, regulator and bubble stabilizer, and carrying out the processes of batching, stirring, pouring, standing, cutting, high-pressure steam curing and the like.

In the production process of the aerated bricks, a large amount of residual steam is generated in a still kettle of an aerated brick factory, and the current method is to directly discharge the part of high-temperature steam to the air, so that energy is wasted, the environment is polluted thermally, and the phenomenon of thermal pollution is particularly serious when the temperature is higher in summer. The waste steam is also used for heating cold water through water pipe exchange, but the utilization rate and the heat exchange efficiency are low. And a large amount of high-temperature steam is added into the new autoclave through the air inlet cylinder to achieve the production condition, so that the autoclave needs to be preheated for a long time, the production cost is high, and the energy consumption is serious.

SUMMERY OF THE UTILITY MODEL

In order to carry out recycle to the high temperature steam waste heat that produces among the still kettle, this application provides an air entrainment brick production steam waste heat recovery utilizes system.

The application provides a steam waste heat recovery utilizes system for aerated brick production adopts following technical scheme:

a steam waste heat recycling system for aerated brick production comprises a still kettle, a heat exchanger and a boiler, wherein the still kettle is communicated with a steam outlet pipe and a steam inlet pipe; the steam outlet pipe is communicated with a steam inlet of the heat exchanger and is connected with an electric steam compressor; a liquid outlet is formed in the bottom of the heat exchanger and communicated with a feed inlet of the boiler, and a discharge outlet of the boiler is communicated with a steam inlet pipe; pipeline valves are arranged among the steam outlet pipe, the steam inlet pipe, the heat exchanger and the boiler.

By adopting the technical scheme, a large amount of high-temperature steam generated in the autoclave is conveyed to the interior of the heat exchanger from the steam outlet pipe under the action of the electric steam compressor; high-temperature steam is converted into hot liquid in the heat exchanger, the hot liquid is discharged to the boiler through a liquid outlet at the bottom, the boiler heats the hot liquid, and the boiler discharges the steam generated by heating the hot liquid into the autoclave through a steam inlet pipe. Through having set up electric steam compressor, the high temperature steam that will evaporate the pressure cauldron and produce collects to inside the heat exchanger to convert the hydrothermal liquid under the effect of heat exchanger, can utilize the hydrothermal liquid so far, realized the utilization to high temperature steam, and the hydrothermal liquid becomes steam through the heating and can flow back to the inside use in order to carry out the next cycle still kettle of evaporating the pressure cauldron again, and this makes the boiler need not to heat liquid from the room temperature, has reduced the waste of the energy.

Preferably, the filter is fixedly connected inside one end, close to the still kettle, of the steam outlet pipe, the feed end of the filter is communicated with the steam outlet pipe, and the discharge end of the filter is communicated with the electric steam compressor.

When the aerated brick is produced, steam can contact with the aerated brick in the still kettle, and when the aerated brick is produced, more impurities can be contained in the steam, and the steam can be directly drained and used to cause pipeline pollution or blockage.

Preferably, the top of the heat exchanger is connected with a safety valve, the lower part of the safety valve is communicated with the heat exchanger, and the side part of the safety valve is communicated with a pressure relief pipe.

Safety valves are used to prevent the medium pressure in pipes or equipment from exceeding a specified value. Through adopting above-mentioned technical scheme, be connected with the heat exchanger in the heat exchanger, when the inside steam pressure of heat exchanger was too high, outwards discharged steam through the pressure release pipe of lateral part intercommunication, kept the pressure stability inside the heat exchanger.

Preferably, the pressure relief pipe is connected with a pressure relief valve, and the water outlet end of the pressure relief pipe is connected with a collection tank.

Through adopting above-mentioned technical scheme, the relief valve during operation, the inside steam pressure release pipe of heat exchanger is inside owing to meet the mouth of pipe discharge that cold formation comdenstion water from the relief pipe, is connected with the collection tank through the play water end at the relief pipe, collects this part comdenstion water, reduces direct emission and causes the influence and cause the water waste with ground to the environment.

Preferably, be connected with the water storage tank between leakage fluid dram and the boiler, the end of intaking and the leakage fluid dram intercommunication of water storage tank, the play water end and the boiler intercommunication of water storage tank, all be connected with the pipeline valve between water storage tank and leakage fluid dram, water storage tank and the boiler.

By adopting the technical scheme, when too much hot liquid is in the heat exchanger, the part of hot liquid can be temporarily stored in the water storage tank with the heat preservation effect, and the situation that the part of hot liquid needs to be discharged due to insufficient stock in the boiler is reduced.

Preferably, the collecting tank is communicated with a return pipe, and the return pipe is communicated with the water storage tank.

Through adopting above-mentioned technical scheme, the collecting tank is collected from the condensed steam that the relief valve flows out, flows back the steam condensate water to the water storage tank through the back flow and carries out recycle, improves the water resource, heat resource's utilization ratio.

Preferably, the bottom of the heat exchanger is provided with a raised seat.

Through adopting above-mentioned technical scheme, adopt the bed hedgehopping seat to bed hedgehopping the heat exchanger, make things convenient for the installation between bottom leakage fluid dram and the pipeline, conveniently discharge the inside hot liquid of heat exchanger simultaneously.

Preferably, the water storage tank, the heat exchanger and the collecting tank are all provided with drain pipes, and each drain pipe is provided with a pipeline valve.

By adopting the technical scheme, when the water amount in the water storage tank, the heat exchanger and the collection tank is too high, the excessive water can be discharged through the drain pipe; and the blow off pipe is located the bottom of water storage tank, heat exchanger, collecting tank etc. when water storage tank, heat exchanger, collecting tank bottom pile up there is impurity, the accessible blow off pipe carries out the discharge filth.

In summary, the present application at least includes the following beneficial technical effects:

1. the electric steam compressor is arranged, high-temperature steam generated by the still kettle is collected into the heat exchanger, the steam is converted into hot liquid in the heat exchanger, so that the hot liquid can be utilized, the high-temperature steam is utilized, the hot liquid is converted into steam through heating and can flow back to the inside of the still kettle again for the use of the still kettle in the next period, the boiler does not need to heat the liquid from room temperature, and the waste of energy is reduced;

2. the collecting tank is connected to the water outlet end of the pressure relief pipe, so that the part of condensed water is collected, and the direct discharge and the influence of the ground on the environment and the waste of water resources are reduced.

3. The filter is connected with the steam outlet pipe of the still kettle, so that the steam discharged from the still kettle is filtered, and the influence of impurities on the pipeline is reduced.

Drawings

FIG. 1 is a steam waste heat recycling process diagram in a steam waste heat recycling system for aerated brick production.

Description of reference numerals: 1. a still kettle; 11. a steam outlet pipe; 12. a steam inlet pipe; 2. a filter; 3. an electric vapor compressor; 4. a heat exchanger; 41. a padding seat; 42. a safety valve; 43. a pressure relief pipe; 44. a collection tank; 45. a return pipe; 5. a water storage tank; 6. a boiler; 7. a sewage discharge pipe.

Detailed Description

The present application is described in further detail below with reference to fig. 1.

The embodiment of the application discloses aerated brick production steam waste heat recovery utilizes system. Referring to fig. 1, the system for recycling the waste heat of steam generated in the production of aerated bricks comprises a still kettle 1, wherein the still kettle 1 is communicated with a steam outlet pipe 11 and a steam inlet pipe 12. The steam outlet pipe 11 is used for discharging the high-temperature waste heat in the autoclave 1 for utilization. In the production process of the aerated brick, steam can contact the aerated brick in the still kettle 1, more impurities can be contained in the steam, the steam is directly discharged for use, the utilization rate of the steam is low, and the transportation pipeline is blocked in the wind direction. Therefore, a filter 2 for filtering hot steam is connected to the steam outlet pipe 11 of the autoclave 1 to filter the steam in the steam outlet pipe 11. The feed end of the filter 2 is communicated with the steam outlet pipe 11, and the discharge end is communicated with the heat exchanger 4.

In the present embodiment, the heat exchanger 4 is a vertical positive displacement heat exchanger 4. The heat exchanger 4 is provided with a steam inlet which is communicated with the steam outlet pipe 11. In particular, the end of the steam outlet pipe 11 close to the heat exchanger 4 is also connected with an electric steam compressor 3. The electric vapor compressor 3 of the present application adopts the electric vapor compressor 3 of the steam energy saving device limited company of feihuda jeopardy of liaoning. This electronic vapor compressor 3 uses the motor as the power supply, drives the piston through crank link mechanism and does work, will retrieve from the waste heat steam who evaporates autoclave 1 and collect to carry to heat exchanger 4.

The heat exchanger 4 of the present application is a vertical positive displacement heat exchanger 4. The steam inlet of the heat exchanger 4 is communicated with the steam outlet pipe 11. The bottom end of the heat exchanger 4 is provided with a liquid outlet, and after high-temperature steam enters the heat exchanger 4, the high-temperature steam exchanges heat inside the heat exchanger 4 and is converted into hot liquid which is discharged from the liquid outlet. In order to conveniently discharge hot liquid in the heat exchanger 4, a raised seat 41 is fixed at the bottom of the heat exchanger 4, the raised seat 41 is made of steel, the raised seat 41 is fixed at the bottom, and the heat exchanger 4 is placed on the top surface of the raised seat 41.

The liquid outlet is communicated with a water storage tank 5 through a pipeline. The water storage tank 5 with the heat preservation performance number is selected for the water storage tank, or a heat preservation layer can be added outside the water storage tank 5 for improving the heat preservation performance of the water storage tank 5. The water inlet end of the water storage tank 5 is communicated with the liquid outlet, the water outlet end is communicated with a boiler 6, and after the boiler 6 heats the hot liquid, hot steam is provided for the operation of the still kettle 1 in the next period through a steam outlet pipe 11.

In order to maintain the pressure balance inside the heat exchanger 4, the top of the heat exchanger 4 is further provided with a safety valve 42, the bottom end of the safety valve 42 is communicated with the heat exchanger 4, the side part of the safety valve is communicated with a pressure relief pipe 43, and the pressure relief pipe 43 extends to the bottom of the heat exchanger 4. Therefore, in the present embodiment, a collection tank 44 is communicated with the water outlet end of the pressure relief pipe 43 to collect the condensed water flowing out of the pressure relief valve. The collecting tank 44 is also communicated with a return pipe 45, the return pipe 45 is communicated with the water storage tank 5, and the condensed water flowing out of the pressure release valve flows back to the water storage tank 5 for recycling.

The water storage tank 5, the heat exchanger 4 and the collecting tank 44 are all provided with a sewage discharge pipe 7, and when the water amount in the water storage tank 5, the heat exchanger 4 and the collecting tank 44 is too high or impurities are accumulated at the bottom, redundant water and dirt can be discharged through the sewage discharge pipe 7; and each blow-off pipe 7 is provided with a pipeline valve for controlling the communication of the blow-off pipe 7 in the external environment.

In this embodiment, pipeline valves are arranged between the steam outlet pipe 11, the steam inlet pipe 12, the heat exchanger 4 and the boiler 6. Pipeline valves are connected between the water storage tank 5 and the liquid outlet, and between the water storage tank 5 and the boiler 6.

When the steam waste heat recycling system for aerated brick production works, all the valves of the blowdown valves are closed. After the work of steaming and adding air bricks in the still kettle 1 is finished, a valve on the air outlet pipe 11 is opened, so that steam enters the filter 2 to be filtered, at the moment, under the action of the electric steam compressor 3, the steam enters the heat exchanger 4, after heat exchange is finished in the heat exchanger 4, hot liquid is discharged from the bottom of the heat exchanger 4, and the hot liquid enters the water storage tank 5 under the action of gravity to be stored. And when waiting for the autoclave 1 to work in the next period, opening a valve between the water storage tank 5 and the boiler 6, pumping water in the water storage tank 5 into the boiler 6 by a power source of the boiler 6, heating to form hot steam, and entering the inside of the autoclave 1 through the steam inlet pipe 12.

The implementation principle of the steam waste heat recycling system for aerated brick production in the embodiment of the application is as follows: through having set up electronic vapor compressor 3, collect the high temperature steam that still kettle 1 produced inside heat exchanger 4 to convert into hot liquid under heat exchanger 4's effect, can utilize hot liquid so far, realized the utilization to high temperature steam, and hot liquid becomes steam through the heating and can flow back to still kettle 1 inside in order to carry out the use that still kettle 1 in next cycle again, this makes boiler 6 need not to heat liquid from the room temperature, the waste of the energy has been reduced.

In order to show the circulation process of the high-temperature steam waste heat in each device, the autoclave 1, the filter 2, the electric steam compressor 3, the heat exchanger 4 and the water storage tank 5 are all displayed in a modularized mode.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides an air entrainment brick production steam waste heat recovery utilizes system, includes still kettle (1), still kettle (1) intercommunication has steam outlet pipe (11) and admission pipe (12), its characterized in that: the system also comprises a heat exchanger (4) and a boiler (6); the steam outlet pipe (11) is communicated with a steam inlet of the heat exchanger (4), and the steam outlet pipe (11) is connected with an electric steam compressor (3); a liquid outlet is formed in the bottom of the heat exchanger (4), the liquid outlet is communicated with a feed inlet of the boiler (6), and a discharge outlet of the boiler (6) is communicated with a steam inlet pipe (12); pipeline valves are arranged among the steam outlet pipe (11), the steam inlet pipe (12), the heat exchanger (4) and the boiler (6).

2. The waste heat recycling system for steam produced by aerated bricks according to claim 1, characterized in that: the inside of one end, close to the still kettle (1), of the steam outlet pipe (11) is fixedly connected with a filter (2), the feeding end of the filter (2) is communicated with the steam outlet pipe (11), and the discharging end of the filter (2) is communicated with the electric steam compressor (3).

3. The waste heat recycling system for steam produced by aerated bricks according to claim 1, characterized in that: the top of the heat exchanger (4) is connected with a safety valve (42), the lower part of the safety valve (42) is communicated with the heat exchanger (4), and the side part of the safety valve (42) is communicated with a pressure relief pipe (43).

4. The aerated brick production steam waste heat recycling system of claim 3, which is characterized in that: the pressure relief pipe (43) is connected with a pressure relief valve, and the water outlet end of the pressure relief pipe (43) is connected with a collecting tank (44).

5. The aerated brick production steam waste heat recycling system of claim 4, which is characterized in that: be connected with water storage tank (5) between leakage fluid dram and boiler (6), the end and the leakage fluid dram intercommunication of intaking of water storage tank (5), the play water end and boiler (6) intercommunication of water storage tank (5), all be connected with the pipeline valve between water storage tank (5) and leakage fluid dram, water storage tank (5) and boiler (6).

6. The aerated brick production steam waste heat recycling system of claim 5, which is characterized in that: the collecting tank (44) is communicated with a return pipe (45), and the return pipe (45) is communicated with the water storage tank (5).

7. The waste heat recycling system for steam produced by aerated bricks according to claim 1, characterized in that: and a padding seat (41) is fixedly arranged at the bottom of the heat exchanger (4).

8. The aerated brick production steam waste heat recycling system of claim 6, which is characterized in that: the water storage tank (5), the heat exchanger (4) and the collecting tank (44) are all provided with drain pipes (7), and each drain pipe (7) is provided with a pipeline valve.