CN217188796U - Gas-liquid circulating type heat treatment furnace for carbon neutralization - Google Patents

Abstract

The utility model provides a gas-liquid circulating type carbon neutralization heat treatment furnace, which comprises a furnace body, a material treatment device arranged at the top of the furnace body, and a liquid circulation device and a gas circulation device which are arranged at the side of the furnace body, wherein the furnace body comprises a shell, a heat insulation layer and a reaction container which are sequentially arranged from outside to inside, a certain distance is arranged between the heat insulation layer and the reaction container to form a heat treatment furnace chamber, a heating body is arranged at the top of the heat treatment furnace chamber, and the side of the furnace body is provided with a furnace door corresponding to the reaction container; the utility model discloses well cooperation furnace body is provided with material processing apparatus, liquid circulation device and gas circulation device, can realize the broken of material, mix, heating, the integrated processing of acidizing, then directly pour into reaction vessel, has avoided the material to transport the time waste and the material loss that bring in different equipment, has greatly improved work efficiency.

Description

Gas-liquid circulating type heat treatment furnace for carbon neutralization

Technical Field

The utility model relates to a carbon dioxide neutralization technology field especially relates to a gas-liquid circulation formula carbon is neutralized and is used heat treatment furnace.

Background

With the continuous development of human industrial activities, the concentration of carbon dioxide in the atmosphere is gradually increased, which causes the problems of extreme weather, sea level rise, species extinction, ecological system deterioration and the like in the world, seriously threatens the future life safety of human beings, needs to find an effective and low-cost carbon emission reduction scheme, and actively promotes the carbon dioxide capture and sequestration (CCS) technology. Carbon neutralization is the core of the technology, and is mainly divided into geological sequestration, ocean sequestration and mineral sequestration. Compared with the prior art, the mineral sealing and storing technology has the characteristics of environmental protection, safety, permanence and the like, and the carbon dioxide mineral sealing and storing raw material has rich sources, huge reserves and low price, and has large-scale carbon neutralization potential and good economic benefit.

However, the reaction rate of the mineral and carbon dioxide is low in natural environment, so that special heat treatment processes or modification treatment of the mineral, such as reduction of the particle size of the mineral raw material, acid treatment of the mineral raw material and the like, are often required. The traditional process has complicated steps, generally, the mineral raw materials are crushed and poured into an acid solution for stirring, and then are subjected to heat treatment, so that frequent material transfer is needed, and the working efficiency is greatly influenced. In addition, more industrial waste liquid is generated in the preparation process, so that the environment is easily polluted; in addition, part of carbon dioxide is discharged along with the furnace during discharging, so that the carbon neutralization rate is reduced.

SUMMERY OF THE UTILITY MODEL

To the not enough that exists among the prior art, the utility model provides a gas-liquid circulation formula carbon neutralization is with heat treatment furnace, its production efficiency who has solved existence among the prior art is low, easy polluted environment, the partial waste gas of emission leads to the problem that the carbon neutralization rate reduces.

According to the embodiment of the utility model, a gas-liquid circulating type carbon neutralization heat treatment furnace comprises a furnace body, a material treatment device arranged at the top of the furnace body, and a liquid circulation device and a gas circulation device which are arranged at the side of the furnace body, wherein the furnace body comprises a shell, a heat insulation layer and a reaction container which are sequentially arranged from outside to inside, a certain distance is arranged between the heat insulation layer and the reaction container to form a heat treatment furnace chamber, a heating body is arranged at the top of the heat treatment furnace chamber, and a furnace door corresponding to the reaction container is arranged at the side of the furnace body;

the material treatment device comprises a mixing bin, a solid-liquid treatment bin and a storage bin which are sequentially communicated from top to bottom; the liquid circulating device comprises a liquid storage tank, and the liquid storage tank is respectively provided with a liquid inlet pipe and a liquid outlet pipe which are communicated with the interior of the reaction vessel; the gas circulation device comprises a carbon dioxide gas tank, wherein an air inlet pipe and an air outlet pipe are arranged on the carbon dioxide gas tank and communicated with the inside of the reaction container.

Further, the top of the mixing material bin is provided with a feeding hole, a first heating device and a stirring assembly are arranged inside the mixing material bin, a first solid-liquid separator and a first waste liquid tank which are communicated with each other are arranged inside the solid-liquid treatment bin, a water tank is arranged inside the storage bin in a communicated mode, and the storage bin is communicated to the inside of the reaction container through a pipeline.

Furthermore, an air pressure sensor is arranged at one end of the air outlet pipe close to the reaction container, and a filtering supercharger is arranged at one end of the air outlet pipe close to the carbon dioxide gas tank; and a second heating device is arranged on the air inlet pipe.

Furthermore, a diversion valve is further arranged on the liquid outlet pipe, and the diversion valve is connected with a diversion pipe and is connected to a second waste liquid tank arranged outside the furnace body through the diversion pipe.

Furthermore, a second solid-liquid separator is further arranged in the reaction container, the second solid-liquid separator divides the reaction container into two parts along the vertical direction, the liquid inlet pipe is communicated to the space above the second solid-liquid separator, and the liquid outlet pipe is communicated to the space below the second solid-liquid separator.

Further, the stirring assembly comprises a motor arranged above the mixing bin and a stirrer vertically arranged inside the mixing bin, and the motor is connected with the stirrer through a coupler.

Further, the first solid-liquid separator is a molecular sieve filter with a closed structure, and the interior of the first solid-liquid separator is communicated with the first waste liquid tank through a pipeline.

Furthermore, a high-pressure spray head with a downward nozzle is arranged at the top of the reaction container, and the storage bin is communicated to the reaction container and then connected with the high-pressure spray head.

Further, the second solid-liquid separator is an adjustable membrane separator, and the aperture adjusting range of the second solid-liquid separator is 0.5-3 mm.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the utility model is provided with a material processing device, a liquid circulating device and a gas circulating device by matching with the furnace body, can realize the integrated processing of crushing, mixing, heating and acidification of materials, and then directly inject the materials into the reaction vessel, thereby avoiding the time waste and material loss caused by the transfer of the materials in different devices and greatly improving the working efficiency;

2. the utility model, after modifying the mineral raw material, injects the modified mineral raw material into the reaction vessel in the form of slurry, which is beneficial to improving the reaction rate of the mineral and carbon dioxide and further improving the process efficiency of carbon neutralization;

3. the liquid circulating device and the gas circulating device in the utility model can respectively filter and recycle the waste liquid and waste gas generated after reaction, thereby repeatedly utilizing the carbon dioxide gas and the reaction waste liquid, saving the cost and increasing the carbon neutralization rate; in addition, still the pertinence is provided with a plurality of waste liquid and accomodates the jar, prevents that the direct emission of waste liquid from polluting the environment, has promoted the feature of environmental protection of technology.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

In the above drawings: 1. a second heating device; 2. an air inlet pipe; 3. a carbon dioxide tank; 4. an air pressure sensor; 5. a filtration and pressurization tank; 6. an air outlet pipe; 7. heat preservation and insulation bricks; 8. a furnace body; 9. a storage bin; 10. a first waste liquid tank; 11. a stirrer; 12. a first heating device; 13. a feed hopper; 14. an electric motor; 15. a coupling; 16. a mixing bin; 17. a first solid-liquid separator; 18. a solid-liquid treatment bin; 19. a water tank; 20. a compressor; 21. a heating element; 22. heat treating the hearth; 23. a high pressure spray head; 24. a diverter valve; 25. a liquid inlet pipe; 26. a liquid storage tank; 27. a liquid outlet pipe; 28. a shunt tube; 29. A second waste liquid tank; 30. a shock pad; 31. a reaction vessel; 32. a furnace door; 33. a second solid-liquid separator.

Detailed Description

The technical solution of the present invention will be further explained with reference to the accompanying drawings and embodiments.

As shown in FIG. 1, the embodiment of the present invention provides a gas-liquid circulation type carbon neutralization heat treatment furnace, which comprises a furnace body 8, a material treatment device arranged on the top of the furnace body 8, and a liquid circulation device and a gas circulation device arranged on the side of the furnace body 8. In this embodiment, the furnace body 8 is a square structure, and includes a stainless steel casing, a heat insulation layer and a reaction container 31, which are sequentially arranged from outside to inside, wherein a certain distance is provided between the heat insulation layer and the reaction container 31 to form a heat treatment furnace 22, a heating element 21 is arranged at the top of the heat treatment furnace 22, and a furnace door 32 corresponding to the reaction container 31 is arranged on a side surface of the furnace body 8. In this embodiment, the heat insulation layer is a heat insulation brick 7 made of at least one of light corundum, mullite, magnesia alumina spinel, or silicon carbide, and preferably made of a silicon carbide brick. The heating element 21 is of an electrothermal structure, and is made of at least one of silicon molybdenum or silicon carbide, preferably silicon molybdenum. In this embodiment, a shock absorbing pad 30 made of rubber is further disposed at the bottom of the housing, so as to reduce the shock to the ground when the device works.

The utility model discloses in, material processing apparatus includes from last feed through the blending bunker 16 that sets up down in proper order, solid-liquid treatment storehouse 18 and storage silo 9, but connect through open closed door between blending bunker 16, solid-liquid treatment storehouse 18 and the storage silo 9 respectively, but the door is outer formula structure of drawing in this embodiment, adopts the rotation type tapered end to seal. The top of the mixing material bin 16 is provided with a feeding hole, and the feeding hole is provided with a conical feeding funnel 13 so as to accelerate the feeding speed. The mixing bin 16 is internally provided with a first heating device 12 and a stirring assembly, wherein the first heating device 12 is of a heating wire structure. The stirring assembly comprises a motor 14 arranged above the mixing bin 16 and a stirrer 11 vertically arranged inside the mixing bin 16, wherein the motor 14 is connected with the stirrer 11 through a coupling 15 so as to drive the stirrer 11 to rotate. The inside first solid-liquid separator 17 and the first waste liquid jar 10 that are equipped with intercommunication each other of solid-liquid treatment storehouse 18, first solid-liquid separator 17 be hollow closed structure, and its whole surface is the parting face, and when outside solution and the contact of first solid-liquid separator 17 surface, the micromolecule pierces through first solid-liquid separator 17 and gets into inside, and the macromolecule then stays the outside. The first solid-liquid separator 17 is a molecular sieve filter of a closed structure in the prior art, the pore size of the molecular sieve is 0.5 μm, the inside of the first solid-liquid separator 17 is communicated with the first waste liquid tank 10 through a pipeline, and the water pump arranged inside the first waste liquid tank 10 is matched to discharge screened waste water into the first waste liquid tank 10. The remaining semifluid material, which contains a small amount of moisture, is discharged into the storage bin 9.

In a preferred embodiment, the storage bin 9 is further provided with a water tank 19 in a communicating manner, in this embodiment, a part of the space partitioned from the storage bin is used as the built-in water tank 19, and an electromagnetic valve is arranged between the water tank 19 and the storage bin 9. The storage bin 9 is communicated to the inside of the reaction vessel 31 through a pipeline, and a compressor 20 is further arranged outside the storage bin 9 in a matching manner, so that slurry inside the storage bin 9 can be pressurized and rapidly injected into the reaction vessel 31. With it complex, reaction vessel 31 top is equipped with spout high pressure nozzle 23 down, storage silo 9 communicates to and is connected with high pressure nozzle 23 behind the reaction vessel 31, through compressor 20 and the cooperation of high pressure nozzle 23, can let the inside material of storage silo 9 spout fast, on a large scale in to reaction vessel 31, when promoting feed rate, also let the material more disperse, do benefit to mineral thick liquids and carbon dioxide gas fully contact and react. The high pressure nozzle 23 is adjustable to be pulse mode, mixed mode and rain mode, and this kind of shower nozzle structure is prior art, refer to products such as arrow board shower gondola water faucet can, and it is not repeated here. The spraying force and the spraying range from strong to weak and from concentrated to scattered are respectively provided, so that the material adding requirements of different water contents are met.

In a further scheme of this embodiment, the liquid circulation device includes a liquid storage tank 26, and the liquid storage tank 26 is respectively provided with a liquid inlet pipe 25 and a liquid outlet pipe 27 and is communicated with the interior of the reaction vessel 31. The liquid outlet pipe 27 is further provided with a diversion valve 24, and the diversion valve 24 is a two-way valve. The diversion valve 24 is connected with a diversion pipe 28 and is connected to a second waste liquid tank 29 arranged outside the furnace body 8 through the diversion pipe 28, and the diversion valve 24 can control the flow direction of the liquid outlet, so that different waste liquids are respectively recycled to the inside of the liquid storage tank 26 or collected into the second waste liquid tank 29. In a preferred embodiment, a second solid-liquid separator 33 is further disposed inside the reaction vessel 31, the second solid-liquid separator 33 is an adjustable membrane separator, and the aperture adjustment range of the second solid-liquid separator is 0.5 μm to 3 mm. In this embodiment, the ceramic membrane separator is selected, and different screening requirements can be met according to the ceramic membranes with different apertures and the corresponding switching valves, and the structure of the ceramic membrane separator is the prior art, and is not described herein again. The second solid-liquid separator 33 divides the reaction vessel 31 into two parts in the vertical direction, the liquid inlet pipe 25 is communicated with the space above the second solid-liquid separator 33, and the liquid outlet pipe 27 is communicated with the space below the second solid-liquid separator 33. I.e., the waste water screened by the second solid-liquid separator 33, is used for recycling or discharged into the second waste-liquid tank 29.

The gas circulation device comprises a carbon dioxide gas tank 3, wherein the carbon dioxide gas tank 3 is provided with a gas inlet pipe 2 and a gas outlet pipe 6 which are communicated with the inside of the reaction container 31. An air pressure sensor 4 is arranged at one end of the air outlet pipe 6 close to the reaction container 31, a filtering and pressurizing tank 5 is arranged at one end close to the carbon dioxide gas tank 3, the filtering and pressurizing tank 5 comprises a filter and a pressurizer, wherein the filter is filled with silica gel, activated carbon and the like for absorbing water vapor and solid particles, and the recovered waste gas containing carbon dioxide is filtered and purified; the supercharger is a gas compressor, and exhausted waste gas can be recycled to the inside of a gas tank in a high-pressure environment through supercharging. Be provided with second heating device 1 on intake pipe 2, the heating wire structure that the intake pipe 2 set up is encircleed in the preferred adoption of second heating device 1 in this embodiment to preheat the carbon dioxide of adding reaction vessel 31, promote the reactivity of carbon dioxide, further accelerate reaction rate.

In practical use, firstly, mineral raw materials and a modifying solution for carbon neutralization are poured into the mixing bin 16 from the feeding funnel 13, the motor 14 drives the stirrer 11 to stir the mixture through the coupler 15, and meanwhile, the second heating device 1 can selectively heat the interior of the mixing bin 16 according to requirements. After the raw materials are uniformly mixed, opening a bin door, flowing into a solid-liquid treatment bin 18 under the action of gravity, completing solid-liquid separation through a first solid-liquid separator 17, enabling the waste liquid to flow into a first waste liquid tank 10, enabling the solid raw materials containing a small amount of water to fall into a storage bin 9, opening an electromagnetic valve arranged on a water tank 19, adding a proper amount of water into the storage bin 9, mixing with the solid raw materials, and washing to obtain the slurry of the modified reaction raw materials.

During the heat treatment process, the slurry of the modified reaction raw material is sprayed into the reaction vessel 31 through the high-pressure spray head 23; meanwhile, gas enters the reaction container 31 from the carbon dioxide gas tank 3 through the gas inlet pipe 2, when the gas pressure sensor 4 detects that the gas pressure in the furnace is greater than a set value, the gas outlet pipe 6 is automatically opened, and redundant gas is filtered and pressurized by the filtering and pressurizing tank 5 and then flows into the carbon dioxide gas tank 3 again for recycling. It should be noted that the air pressure sensor 4 is correspondingly connected with an electromagnetic valve located inside the air outlet pipe 6 so as to adjust the opening or closing of the air outlet pipe 6. In addition, according to the carbonization reaction requirements of different ores, the liquid storage tank 26 can be selectively opened, so that the solution such as hydrochloric acid, sulfuric acid and the like stored in the liquid storage tank flows into the reaction container 31 through the liquid inlet pipe 25 to be mixed with the slurry of the modified reaction raw material, the median pore diameter of the filtering membrane in the second solid-liquid separator 33 is set to be 0.5 mu m in the reaction process, only small-particle impurities and water are filtered, the redundant solution can be filtered by the second solid-liquid separator 33 and then flows into the liquid storage tank 26 again through the liquid outlet pipe 27, the recycling of the solution is realized, and large-particle reaction precipitates are left.

After the reaction is finished, drying the reaction product at a low temperature, cooling to room temperature, spraying purified water injected into the water tank 19 by the high-pressure spray head 23, and cleaning the reaction container 31 and the product; meanwhile, the median pore diameter of the filtering membrane in the second solid-liquid separator 33 is set to be 3mm, at this time, large-particle precipitates and other fine impurities can also pass through the filtering membrane together with water, and then the diversion valve 24 is opened, so that the waste liquid flows into the second waste liquid tank 29 through the second liquid outlet pipe 27. And finally, carrying out secondary drying, and opening the furnace door 32 after the secondary drying is finished to take out the product after carbon sequestration is finished.

Finally, it is noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the scope of the claims of the present invention.

Claims (9)

1. A gas-liquid circulation type heat treatment furnace for carbon neutralization is characterized in that: the furnace comprises a furnace body, a material processing device arranged at the top of the furnace body, and a liquid circulating device and a gas circulating device which are arranged on the side surface of the furnace body, wherein the furnace body comprises a shell, a heat-insulating layer and a reaction container which are sequentially arranged from outside to inside, a certain distance is arranged between the heat-insulating layer and the reaction container to form a heat treatment furnace hearth, a heating body is arranged at the top of the heat treatment furnace hearth, and a furnace door corresponding to the reaction container is arranged on the side surface of the furnace body;

the material treatment device comprises a mixing bin, a solid-liquid treatment bin and a storage bin which are sequentially communicated from top to bottom; the liquid circulating device comprises a liquid storage tank, and the liquid storage tank is respectively provided with a liquid inlet pipe and a liquid outlet pipe which are communicated with the interior of the reaction container; the gas circulation device comprises a carbon dioxide gas tank, wherein an air inlet pipe and an air outlet pipe are arranged on the carbon dioxide gas tank and communicated with the inside of the reaction container.

2. The gas-liquid circulation type heat treatment furnace for carbon neutralization of claim 1, wherein: the mixing bunker top is equipped with the feed inlet, and mixing bunker is inside to be provided with first heating device and stirring subassembly, inside first solid-liquid separator and the first waste liquid jar that are equipped with mutual intercommunication of solid-liquid treatment storehouse, the intercommunication is provided with the water tank in the storage silo, and the storage silo communicates to reaction vessel inside through the pipeline.

3. The gas-liquid circulation type heat treatment furnace for carbon neutralization of claim 1, wherein: an air pressure sensor is arranged at one end of the air outlet pipe close to the reaction container, and a filtering supercharger is arranged at one end of the air outlet pipe close to the carbon dioxide gas tank; and a second heating device is arranged on the air inlet pipe.

4. The gas-liquid circulation type heat treatment furnace for carbon neutralization of claim 1, wherein: and a diversion valve is further arranged on the liquid outlet pipe, is connected with a diversion pipe and is connected to a second waste liquid tank arranged outside the furnace body through the diversion pipe.

5. The gas-liquid circulation type heat treatment furnace for carbon neutralization as set forth in claim 1, wherein: the reaction vessel is also internally provided with a second solid-liquid separator which divides the reaction vessel into two parts along the vertical direction, the liquid inlet pipe is communicated with the space above the second solid-liquid separator, and the liquid outlet pipe is communicated with the space below the second solid-liquid separator.

6. The gas-liquid circulation type heat treatment furnace for carbon neutralization as set forth in claim 2, wherein: the stirring assembly comprises a motor arranged above the mixing bin and a stirrer vertically arranged inside the mixing bin, and the motor is connected with the stirrer through a coupler.

7. The gas-liquid circulation type heat treatment furnace for carbon neutralization as set forth in claim 2, wherein: the first solid-liquid separator is a molecular sieve filter with a closed structure, and the interior of the first solid-liquid separator is communicated with the first waste liquid tank through a pipeline.

8. The gas-liquid circulation type heat treatment furnace for carbon neutralization as set forth in claim 2, wherein: the top of the reaction container is provided with a high-pressure nozzle with a downward nozzle, and the storage bin is communicated to the reaction container and then connected with the high-pressure nozzle.

9. The gas-liquid circulation type heat treatment furnace for carbon neutralization of claim 5, wherein: the second solid-liquid separator is an adjustable membrane separator, and the aperture adjusting range of the second solid-liquid separator is 0.5-3 mm.

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