CN213803661U - A coal gas purifier for fine coal pyrolysis - Google Patents
A coal gas purifier for fine coal pyrolysis Download PDFInfo
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- CN213803661U CN213803661U CN202022921925.3U CN202022921925U CN213803661U CN 213803661 U CN213803661 U CN 213803661U CN 202022921925 U CN202022921925 U CN 202022921925U CN 213803661 U CN213803661 U CN 213803661U
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Abstract
The application discloses a coal gas purification device for pulverized coal pyrolysis, which comprises a cyclone dust removal mechanism, a tar condensation mechanism, a water vapor spraying mechanism and an activated carbon adsorption mechanism; the coal gas outlet of the pyrolysis furnace is communicated with the air inlet of the cyclone dust removal mechanism through a coal gas pipe, the air outlet of the cyclone dust removal mechanism is communicated with the air inlet of the tar condensation mechanism through a coal gas pipe, the air outlet of the tar condensation mechanism is communicated with the air inlet of the water vapor spraying mechanism, the air outlet of the water vapor spraying mechanism is communicated with the air inlet of the activated carbon adsorption mechanism, and the purified coal gas is discharged from the air outlet of the activated carbon adsorption mechanism. The application solves the problems that pyrolysis coal gas in the prior art carries a large amount of tar and coal dust, the pyrolysis device is difficult to stably operate easily, the quality of the coal gas is seriously influenced, and the purification of the pyrolysis coal gas is realized.
Description
Technical Field
The utility model belongs to the technical field of fine coal pyrolysis, concretely relates to a coal gas purification device for fine coal pyrolysis.
Background
The pyrolysis of the pulverized coal is a key step of the conversion of the pulverized coal, and is also called dry distillation of the pulverized coal, and refers to a complex process of a series of physical changes and chemical changes generated when the coal is continuously heated to a higher temperature under the condition of isolating air or inert atmosphere. As a result, products such as gas (coal gas), liquid (tar), and solid (semicoke or coke) are produced.
The degree of gas dust removal and purification is a key requirement for meeting high-standard environmental regulations, however, pyrolysis gas carries a large amount of tar and coal dust, the tar and the coal dust are difficult to separate, the problem that a pyrolysis device is difficult to stably operate is easily caused, and the quality of the gas is seriously influenced.
Disclosure of Invention
The embodiment of the application provides a coal gas purifier for fine coal pyrolysis, has solved among the prior art pyrolysis coal gas and has carried a large amount of tar and coal dust, not only causes the problem that pyrolysis device is difficult to the steady operation easily, has seriously influenced the quality of coal gas moreover, has realized the purification of pyrolysis coal gas.
The embodiment of the utility model provides a coal gas purification device for pulverized coal pyrolysis, which comprises a cyclone dust removal mechanism, a tar condensation mechanism, a water vapor spraying mechanism and an activated carbon adsorption mechanism;
the coal gas outlet of the pyrolysis furnace is communicated with the air inlet of the cyclone dust removal mechanism through a coal gas pipe, the air outlet of the cyclone dust removal mechanism is communicated with the air inlet of the tar condensation mechanism through a coal gas pipe, the air outlet of the tar condensation mechanism is communicated with the air inlet of the water vapor spraying mechanism, the air outlet of the water vapor spraying mechanism is communicated with the air inlet of the activated carbon adsorption mechanism, and the purified coal gas is discharged from the air outlet of the activated carbon adsorption mechanism.
Furthermore, the inner surfaces of the cylinder body and the cone body of the cyclone dust removal mechanism are respectively paved with a high-temperature resistant and wear-resistant layer.
Furthermore, the cylinder and the cone of the cyclone dust removal mechanism and the outer surface of the gas pipe are coated with heat insulation materials.
Further, the tar condensation mechanism comprises a condensation cylinder, a condensation pipe arranged in the condensation cylinder and a tar collecting tank arranged at the bottom of the condensation cylinder;
the gas outlet of the cyclone dust removal mechanism is communicated with the side wall of the condensation pipe, the lower end of the condensation pipe is communicated with the tar collecting tank, the upper end of the condensation pipe is communicated with the gas inlet of the water vapor spraying mechanism, a condensate outlet is formed in the upper end of the side wall of the condensation cylinder, and a condensate inlet is formed in the lower end of the side wall of the condensation cylinder.
Furthermore, the water vapor spraying mechanism comprises a spraying box, a plurality of water vapor spray heads and a waste liquid collecting box, an S-shaped channel is arranged in the spraying box, the water vapor spray heads are arranged on the side wall of the channel, and the waste liquid collecting box communicated with the spraying box is arranged below the spraying box.
Further, the active carbon adsorption mechanism includes active carbon adsorption case and a plurality of active carbon adsorption board, be equipped with the passageway of S-shaped in the active carbon adsorption case, it is a plurality of the active carbon adsorption board sets up on the lateral wall of passageway.
Furthermore, an electric tar precipitator is arranged between the water vapor spraying mechanism and the activated carbon adsorption mechanism, the air inlet of the electric tar precipitator is communicated with the air outlet of the water vapor spraying mechanism, and the air outlet of the electric tar precipitator is communicated with the air inlet of the activated carbon adsorption mechanism.
The embodiment of the utility model provides an in one or more technical scheme, following technological effect or advantage have at least:
the utility model discloses a coal gas gets into behind the cyclone dust removal mechanism, can separate and retrieve coal dust wherein under the effect of centrifugal force, tar condensation mechanism makes the tar condensation in the coal gas, thereby realized the purpose of removing tar, water vapor can wrap up the coal dust fast when spraying the water droplet of mechanism and coal dust contact, the water droplet of wrapping up the coal dust subsides, thereby further got rid of the coal dust, surplus tar and the miscellaneous water vapor in the coal gas can be adsorbed to active carbon adsorption mechanism, and can play the effect of desulfurization, thereby further purified coal gas, the utility model discloses tar and coal dust to coal gas carrying purify, avoided tar and coal dust easily to cause the problem that pyrolysis device is difficult to the steady operation to the quality of coal gas has been promoted.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a gas purification device for pulverized coal pyrolysis provided by an embodiment of the present invention.
Reference numerals:
| 1-a pyrolysis furnace; | 2-cyclone dust removing mechanism; | 21-barrel body; |
| 22-a cone; | ||
| 3-a tar condensing mechanism; | 31-a condensation cylinder; | 32-a condenser tube; |
| 33-tar collection tank; | 34-a condensate outlet; | 35-a condensate inlet; |
| 4-a water vapor spraying mechanism; | 41-spraying box; | 42-water vapor spray head; |
| 43-a waste liquid collection box; | ||
| 5-an activated carbon adsorption mechanism; | 51-an activated carbon adsorption tank; | 52-activated carbon adsorption plate; |
| 6-a gas pipe; | 7-electric tar precipitator. |
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1, the coal gas purification device for pulverized coal pyrolysis provided in the embodiment of the present invention includes a cyclone dust removal mechanism 2, a tar condensation mechanism 3, a water vapor spraying mechanism 4, and an activated carbon adsorption mechanism 5;
the coal gas outlet of the pyrolysis furnace 1 is communicated with the air inlet of the cyclone dust removal mechanism 2 through a coal gas pipe 6, the air outlet of the cyclone dust removal mechanism 2 is communicated with the air inlet of the tar condensation mechanism 3 through the coal gas pipe 6, the air outlet of the tar condensation mechanism 3 is communicated with the air inlet of the water vapor spraying mechanism 4, the air outlet of the water vapor spraying mechanism 4 is communicated with the air inlet of the activated carbon adsorption mechanism 5, and the purified coal gas is discharged from the air outlet of the activated carbon adsorption mechanism 5.
After the coal gas outlet of the pyrolysis furnace 1 enters the cyclone dust removal mechanism 2 through the coal gas pipe 6, the coal gas forms an outer rotational flow which rotates downwards, coal dust suspended in the outer rotational flow collides with the inner surfaces of the cylinder 21 and the cone 22 of the cyclone dust removal mechanism 2 under the action of centrifugal force and rotates to the lower part of the cone 22 along with the outer rotational flow, the coal dust is collected by the dust collection box, and the purified coal gas forms an inner rotational flow which rises and enters the tar condensation mechanism 3 through the coal gas pipe 6.
The tar condensing mechanism 3 condenses tar in high-temperature coal gas, thereby realizing the purpose of removing tar, and the filtered coal gas enters the water vapor spraying mechanism 4.
The coal gas is sprayed by water after entering the water vapor spraying mechanism 4, water drops can wrap the coal dust quickly when contacting the coal dust, the water drops wrapping the coal dust are settled, and the coal gas enters the activated carbon adsorption mechanism 5 after being purified.
The active carbon adsorption mechanism can adsorb residual tar and doped water vapor in the coal gas and play a role in desulfurization, thereby further purifying the coal gas.
In this embodiment, the inner surfaces of the cylinder 21 and the cone 22 of the cyclone dust removing mechanism 2 are both paved with high temperature resistant and wear resistant layers.
It should be noted that the coal dust collides against the inner surfaces of the cylinder 21 and the cone 22 of the cyclone dust removal mechanism 2 under the action of the centrifugal force, so that the service life of the cyclone dust removal mechanism 2 can be effectively prolonged by paving the high-temperature resistant and wear-resistant layers on the inner surfaces of the cylinder 21 and the cone 22.
In this embodiment, the cylinder 21 and the cone 22 of the cyclone dust removing mechanism 2 and the outer surface of the gas pipe 6 are coated with heat insulating materials.
It should be noted that the gas is in a high temperature state in the cylinder 21, the cone 22 and the gas pipe 6, and the outer surface of the gas is coated with a thermal insulation material, which can effectively prevent tar in the gas from condensing in advance, thereby avoiding the problem of blocking the gas pipe 6 caused by mutual adhesion and mass accumulation of tar and coal dust.
In this embodiment, the tar condensing mechanism 3 includes a condensing cylinder 31, a condensing pipe 32 disposed in the condensing cylinder 31, and a tar collecting tank 33 disposed at the bottom of the condensing cylinder 31;
the gas outlet of cyclone mechanism 2 communicates with the lateral wall of condenser pipe 32, and the lower extreme and the tar collecting vat 33 of condenser pipe 32 communicate, and the upper end of condenser pipe 32 communicates with the air inlet of steam spraying mechanism 4, and the lateral wall upper end of condenser cylinder 31 is equipped with condensate outlet 34, and the lateral wall lower extreme of condenser cylinder 31 is equipped with condensate import 35.
It should be noted that, the high-temperature coal gas enters the condensation pipe 32, so that tar in the coal gas is condensed and adhered to the inner wall of the condensation pipe 32, the condensed tar flows downwards into the tar collecting tank 33 for recovery, and the filtered gas enters the water vapor spraying mechanism 4.
The condensate enters the condensing cylinder 31 from the condensate inlet 35, and the condensate exchanges heat with the condensing pipe 32 and then flows out from the condensate outlet 34.
In this embodiment, the vapor spraying mechanism 4 includes a spraying box 41, a plurality of vapor nozzles 42 and a waste liquid collecting box 43, an S-shaped channel is provided in the spraying box 41, the plurality of vapor nozzles 42 are provided on the side wall of the channel, and the waste liquid collecting box 43 communicated with the spraying box 41 is provided below.
It should be noted that the dust removal effect is better when a plurality of water vapor nozzles 42 are arranged in the S-shaped channel. The water drops coated with the coal dust are settled to the bottom of the spraying box 41 and then enter a waste liquid collecting box 43 for recovery.
The liquid recovered by the waste liquid collecting box 43 contains heavy oil, clear oil and waste water, and the heavy oil and the clear oil can be recovered for the second time in a centralized manner, so that the environmental pollution is avoided; the waste water may be pumped through a water pump and sprayed through the steam spray head 42, and the sprayed steam may be reused for gas scrubbing.
The water vapor spraying mechanism 4 can also adopt devices such as a washing tower and the like.
In this embodiment, the activated carbon adsorption mechanism 5 includes an activated carbon adsorption tank 51 and a plurality of activated carbon adsorption plates 52, an S-shaped channel is provided in the activated carbon adsorption tank 51, and the plurality of activated carbon adsorption plates 52 are provided on a side wall of the channel.
It should be noted that the adsorption effect is better when a plurality of activated carbon adsorption plates 52 are arranged in the S-shaped channel.
In this embodiment, an electrical tar precipitator 7 is disposed between the water vapor spraying mechanism 4 and the activated carbon adsorption mechanism 5, an air inlet of the electrical tar precipitator 7 is communicated with an air outlet of the water vapor spraying mechanism 4, and an air outlet of the electrical tar precipitator 7 is communicated with an air inlet of the activated carbon adsorption mechanism 5.
It should be noted that the gas output from the gas outlet of the water vapor spraying mechanism 4 is delivered into the electrical tar precipitator 7 through the gas inlet of the electrical tar precipitator 7. The electrical tar precipitator 7 discharges through the cathode and the anode, then the tar in the gas is captured and adhered to the inner wall of the honeycomb cylinder in the electrical tar precipitator 7, then the bottom of the electrical tar precipitator 7 is flushed by steam for centralized collection, and the purified gas is conveyed to the activated carbon adsorption mechanism 5 through the gas outlet of the electrical tar precipitator 7 for purification again.
Above, only the utility model discloses a preferred embodiment, it is not right the utility model discloses do any restriction, all according to the utility model discloses the technical entity all still belongs to any simple modification, change and the equivalent structure change of doing above embodiment the utility model discloses technical scheme's within range of protection.
Claims (7)
1. A coal gas purifier for fine coal pyrolysis which characterized in that: comprises a cyclone dust removal mechanism (2), a tar condensation mechanism (3), a water vapor spraying mechanism (4) and an activated carbon adsorption mechanism (5);
the coal gas export of pyrolysis oven (1) pass through gas pipe (6) with the air inlet intercommunication of whirlwind dust removal mechanism (2), the gas outlet of whirlwind dust removal mechanism (2) pass through gas pipe (6) with the air inlet intercommunication of tar condensation mechanism (3), the gas outlet of tar condensation mechanism (3) with steam sprays the air inlet intercommunication of mechanism (4), steam spray the gas outlet of mechanism (4) with the air inlet intercommunication of active carbon adsorption mechanism (5), the gas after the gas outlet discharge purification of active carbon adsorption mechanism (5).
2. The gas cleaning apparatus for pulverized coal pyrolysis as claimed in claim 1, wherein: and high-temperature-resistant and wear-resistant layers are paved on the inner surfaces of the cylinder body (21) and the cone body (22) of the cyclone dust removal mechanism (2).
3. The gas cleaning apparatus for pulverized coal pyrolysis as claimed in claim 1, wherein: the outer surfaces of the cylinder body (21) and the cone body (22) of the cyclone dust removal mechanism (2) and the gas pipe (6) are coated with heat insulation materials.
4. The gas cleaning apparatus for pulverized coal pyrolysis as claimed in claim 1, wherein: the tar condensation mechanism (3) comprises a condensation cylinder (31), a condensation pipe (32) arranged in the condensation cylinder (31), and a tar collecting tank (33) arranged at the bottom of the condensation cylinder (31);
the gas outlet of cyclone mechanism (2) with the lateral wall intercommunication of condenser pipe (32), the lower extreme of condenser pipe (32) with tar collecting vat (33) intercommunication, the upper end of condenser pipe (32) with the air inlet intercommunication of vapor spraying mechanism (4), the lateral wall upper end of condenser cylinder (31) is equipped with condensate outlet (34), the lateral wall lower extreme of condenser cylinder (31) is equipped with condensate import (35).
5. The gas cleaning apparatus for pulverized coal pyrolysis as claimed in claim 1, wherein: the water vapor spraying mechanism (4) comprises a spraying box (41), a plurality of water vapor spraying heads (42) and a waste liquid collecting box (43), an S-shaped channel is arranged in the spraying box (41), the water vapor spraying heads (42) are arranged on the side wall of the channel, and the waste liquid collecting box (43) communicated with the spraying box (41) is arranged below the spraying box (41).
6. The gas cleaning apparatus for pulverized coal pyrolysis as claimed in claim 1, wherein: the activated carbon adsorption mechanism (5) comprises an activated carbon adsorption box (51) and a plurality of activated carbon adsorption plates (52), wherein an S-shaped channel is arranged in the activated carbon adsorption box (51), and the activated carbon adsorption plates (52) are arranged on the side wall of the channel.
7. The gas cleaning apparatus for pulverized coal pyrolysis as claimed in claim 1, wherein: an electric tar precipitator (7) is arranged between the water vapor spraying mechanism (4) and the activated carbon adsorption mechanism (5), the air inlet of the electric tar precipitator (7) is communicated with the air outlet of the water vapor spraying mechanism (4), and the air outlet of the electric tar precipitator (7) is communicated with the air inlet of the activated carbon adsorption mechanism (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022921925.3U CN213803661U (en) | 2020-12-09 | 2020-12-09 | A coal gas purifier for fine coal pyrolysis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022921925.3U CN213803661U (en) | 2020-12-09 | 2020-12-09 | A coal gas purifier for fine coal pyrolysis |
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| Publication Number | Publication Date |
|---|---|
| CN213803661U true CN213803661U (en) | 2021-07-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022921925.3U Active CN213803661U (en) | 2020-12-09 | 2020-12-09 | A coal gas purifier for fine coal pyrolysis |
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| Country | Link |
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| CN (1) | CN213803661U (en) |
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