CN210237550U - Crude gas exhaust structure and crude gas washing system - Google Patents

Abstract

The utility model relates to a coal gasification technical field specifically relates to a raw coal gas exhaust structure and raw coal gas washing system. The crude gas exhaust structure comprises a gasification furnace (10) with an exhaust pipe (11), a spraying device and a pump piece (20), wherein the spraying device comprises a spraying pipe and a plurality of spraying holes (12) formed in the spraying pipe, the pump piece (20) is connected with the spraying pipe to provide spraying liquid for the spraying pipe, at least part of pipe sections of the spraying pipe are arranged in the exhaust pipe (11) and are adjacent to the exhaust end of the exhaust pipe (11), so that the spraying liquid sprayed out of the spraying holes can be sprayed to the inner surface of the exhaust pipe (11). The crude gas exhaust structure provided by the application can wash away the sediment attached to the inner surface near the exhaust end of the exhaust pipe; meanwhile, the device can also play a role in washing the crude gas, thereby diluting the concentration of dust in the crude gas.

Description

Crude gas exhaust structure and crude gas washing system

Technical Field

The utility model relates to a coal gasification technical field specifically relates to a raw coal gas exhaust structure and raw coal gas washing system.

Background

The pressurized gasification technology of pulverized coal and coal water slurry entrained flow comprises a chilling process flow, gasification core equipment gasification furnaces are provided with an upper combustion chamber and a lower chilling chamber, and high-pressure oxygen and coal water slurry or pulverized coal are subjected to partial oxidation reaction in the combustion chamber under the conditions of high temperature and high pressure. The reaction products are raw gas and liquid slag.

Wherein, the raw gas can carry dust particles with certain concentration, and the dust particles can be attached and deposited into blocks on the inner wall of the pipe in the range of about 2 meters near the mouth of the raw gas outlet pipe. Along with the increase of the operation time of the gasification furnace, the more deposits on the pipe wall of the crude gas outlet of the gasification furnace are accumulated, the pipe orifice is gradually reduced, the effective passing area is continuously reduced, the resistance is continuously increased, and the long-period stable operation of the gasification furnace is seriously influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a coarse coal gas exhaust structure in order to overcome the problem that the deposit on the wall of the coarse coal gas outlet pipe of the gasification furnace in the prior art influences the work of the gasification furnace.

In order to achieve the above object, an aspect of the present invention provides a raw gas exhaust structure, raw gas exhaust structure is including gasifier, spray set and the pump spare that has the blast pipe, spray set includes the shower and forms a plurality of holes that spray on the shower, the pump spare is connected the shower in order to the shower provides spray, wherein, at least part pipeline section setting of shower is in and be close to in the blast pipe the exhaust end of blast pipe sets up, so that spray that the hole erupts spray can spray extremely on the internal surface of blast pipe.

Preferably, the shower pipe includes a first pipe section connected to the pumping member and a second pipe section provided in the exhaust pipe and adjacent to an exhaust end of the exhaust pipe, and the plurality of shower holes are formed on a surface of the second pipe section, wherein an end of the second pipe section is closed.

Preferably, a plurality of the spray holes are evenly distributed on the surface of the second pipe section.

Preferably, the axis of the second pipe section and the axis of the exhaust pipe are parallel to each other.

Preferably, the spraying holes are obliquely arranged in a direction from the inner surface to the outer surface of the second pipe section, and the oblique direction of the spraying holes is opposite to the flow direction of the crude gas in the exhaust pipe, so that the spraying liquid sprayed out of the spraying holes can be vertically sprayed onto the inner surface of the exhaust pipe under the action of the crude gas flowing in the exhaust pipe.

Preferably, the second pipe section is detachably connected to the first pipe section.

Preferably, the second pipe section is connected to the first pipe section by a flange.

Preferably, the shower pipe penetrates through a surface of the gasification furnace to connect the pumping piece.

The second aspect of the utility model provides a raw gas scrubbing system, raw gas scrubbing system includes as above raw gas exhaust structure.

Preferably, the raw gas scrubbing system comprises a venturi scrubber and a scrubbing tower, wherein the exhaust end of the exhaust pipe is connected with the venturi scrubber, and the output end of the venturi scrubber is connected with the scrubbing tower.

Through the technical scheme, the pump piece can convey the spray liquid to the spray pipe of the spray device by utilizing the crude gas exhaust structure provided by the application, and the spray pipe is provided with a plurality of spray holes, at least part of pipe sections of the spray pipe are arranged in the exhaust pipe and are adjacent to the exhaust end of the exhaust pipe, so that the spray liquid can be sprayed out from the spray holes under the pressure of the pump piece, and then is sprayed onto the inner surface of the exhaust pipe, and deposits attached to the inner surface near the exhaust end of the exhaust pipe are washed away; meanwhile, the spraying liquid can also play a role in washing the crude gas, so that the concentration of dust in the crude gas is diluted.

Drawings

Fig. 1 is a schematic diagram of a raw gas scrubbing system according to a preferred embodiment of the present invention;

fig. 2 is a sectional view of a second pipe section of the shower pipe of the raw gas exhaust structure according to the preferred embodiment of the present invention.

Description of the reference numerals

10-gasification furnace 11-exhaust pipe 12-spray hole 13-first pipe section 14-second pipe section

20-pump 30-venturi scrubber 40-scrubbing tower

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.

As shown in fig. 1, the present application provides a crude gas exhaust structure, crude gas exhaust structure is including gasifier 10, spray set and the pump 20 that has blast pipe 11, spray set includes the shower and forms a plurality of spray holes 12 on the shower, pump 20 connects the shower is in order to the shower provides spray, wherein, at least partial pipeline section setting of shower is in the blast pipe 11 and neighbouring the exhaust end of blast pipe 11 sets up, so that spray hole erupted can spray to on the internal surface of blast pipe 11.

The pump member 20 is capable of delivering a spray liquid to the spray pipe of the spray apparatus, and since the spray pipe is formed with a plurality of spray holes 12 and at least a part of the pipe sections of the spray pipe are provided in the exhaust pipe and adjacent to the exhaust end of the exhaust pipe, the spray liquid is ejected from the spray holes 12 under the pressure of the pump member to be sprayed onto the inner surface of the exhaust pipe 11, washing away the deposits attached to the inner surface near the exhaust end of the exhaust pipe 11; meanwhile, the spraying liquid can also play a role in washing the crude gas, so that the concentration of dust in the crude gas is diluted.

Wherein, the spraying liquid can be water or other liquid with certain cleaning effect, preferably water. The pressure of the pump element should be sufficient to avoid as far as possible the occurrence of atomization of the spray liquid and to ensure that the spray liquid can be sprayed onto the inner surface of the exhaust pipe 11.

In order to provide the shower pipe of the shower apparatus, it is preferable that the shower pipe includes a first pipe section 13 and a second pipe section 14, the first pipe section 13 penetrates through the surface of the gasification furnace 10 to be connected to a pumping member provided outside the gasification furnace 10, the second pipe section 14 is connected to the other end of the first pipe section 13, at least a portion of the second pipe section 14 protrudes into the exhaust pipe 11, and the second pipe section 14 is formed with the shower hole 12. Wherein, the end of the second pipe section 14 is closed, so that the spraying liquid can only be sprayed out from the spraying holes 12 on the second pipe section 14, the hydraulic pressure when the spraying liquid is sprayed out is improved, and the washing effect on the sediment on the inner surface of the exhaust pipe 11 is improved.

Referring to the structure shown in fig. 1, the axis of the second pipe section 14 and the axis of the exhaust pipe 11 are parallel to each other, and the plurality of spray holes 12 are uniformly distributed on the surface of the second pipe section 14, so that the spray liquid sprayed from the spray holes 12 at various positions on the second pipe section 14 can exert the same cleaning effect on various positions on the inner surface of the exhaust pipe 11. Wherein, the hole 12 that sprays can be a bar hole or circular port, and encircle the whole week setting of second pipe section 14, and second pipe section 14 is preferably cylindrical pipe section, and the axis of second pipe section 14 and the axis collineation of blast pipe 11, therefore the distance between the inner surface of the hole 12 that sprays on the each position of second pipe section 14 and blast pipe 11 is equal, guarantees all to have good cleaning performance to each part of the inner surface of blast pipe 11.

In order to enable the sprayed spray liquid to be vertically sprayed onto the inner surface of the exhaust pipe 11, thereby improving the cleaning effect, preferably, as shown in fig. 2, the spray holes 12 are obliquely arranged in a direction from the inner surface to the outer surface of the second pipe section 14, and the oblique direction of the spray holes 12 is opposite to the flow direction of the raw gas in the exhaust pipe 11, and the raw gas in the exhaust pipe 11 acts on the spray liquid sprayed along the spray holes 12, so that the spray liquid sprayed in the oblique direction finally acts on the inner surface of the exhaust pipe 11 in a vertical direction; on the other hand, the spraying liquid and the crude gas generate the opposite impact, so that the washing effect of the spraying liquid on the crude gas is improved. Preferably, the spray holes 12 are arranged so that the spray liquid can be sprayed in a direction at an angle of 45 ° to the axis of the exhaust pipe section 14.

It is also preferred that the second pipe section 14 is detachably connected to the first pipe section 13, so that the second pipe section 14 as well as the first pipe section 13 can be serviced or replaced if necessary. Wherein the second pipe section is connected with the first pipe section through a flange.

A second aspect of the present application provides a raw gas scrubbing system comprising a raw gas exhaust structure as described above. Wherein, as shown in fig. 1, the raw gas scrubbing system includes a venturi scrubber 30 and a scrubbing tower 40, the exhaust end of the exhaust pipe 11 is connected to the venturi scrubber 30, the output end of the venturi scrubber 30 is connected to the scrubbing tower 40, so that the raw gas exhausted from the exhaust pipe 11 sequentially passes through the venturi scrubber 30 and the scrubbing tower 40, and the venturi scrubber 30 and the scrubbing tower 40 scrub the raw gas.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited thereto. The technical scheme of the utility model in the technical conception scope, can be right carry out multiple simple variant. Including each of the specific features, are combined in any suitable manner. In order to avoid unnecessary repetition, the present invention does not separately describe various possible combinations. These simple variations and combinations should also be considered as disclosed in the present invention, all falling within the scope of protection of the present invention.

Claims (10)

1. A crude gas exhaust structure is characterized by comprising a gasification furnace (10) with an exhaust pipe (11), a spraying device and a pump piece (20), wherein the spraying device comprises a spraying pipe and a plurality of spraying holes (12) formed on the spraying pipe, the pump piece (20) is connected with the spraying pipe to provide spraying liquid for the spraying pipe,

wherein at least part of the pipe sections of the spray pipe are arranged in the exhaust pipe (11) and are arranged close to the exhaust end of the exhaust pipe (11) so that the spray liquid sprayed out from the spray holes (12) can be sprayed onto the inner surface of the exhaust pipe (11).

2. The raw gas exhaust structure according to claim 1, wherein the shower comprises a first pipe segment (13) and a second pipe segment (14), the first pipe segment (13) is connected with a pumping member (20), the second pipe segment (14) is disposed in the exhaust pipe (11) and is disposed adjacent to an exhaust end of the exhaust pipe (11), and a plurality of the shower holes (12) are formed on a surface of the second pipe segment (14), wherein a tip end of the second pipe segment (14) is closed.

3. Raw gas exhaust structure according to claim 2, characterized in that a plurality of said spray holes (12) are evenly distributed over the surface of said second pipe section (14).

4. Crude gas exhaust structure according to claim 2, characterized in that the axis of the second pipe section (14) and the axis of the exhaust pipe (11) are parallel to each other.

5. The raw gas exhaust structure according to claim 4, wherein the spray holes (12) are provided obliquely in a direction from the inner surface to the outer surface of the second pipe segment (14), and the oblique direction of the spray holes (12) is opposite to the flow direction of the raw gas in the exhaust pipe (11) so that the spray liquid sprayed from the spray holes (12) can be vertically sprayed onto the inner surface of the exhaust pipe (11) by the raw gas flowing in the exhaust pipe (11).

6. Raw gas exhaust structure according to claim 3, characterized in that the second pipe section (14) is detachably connected to the first pipe section (13).

7. Raw gas exhaust structure according to claim 6, characterized in that the second pipe section (14) is flanged to the first pipe section (13).

8. The raw gas exhaust structure according to any one of claims 1 to 7, wherein the shower pipe penetrates through a surface of the gasification furnace (10) to connect the pumping piece (20).

9. A raw gas scrubbing system, characterized in that it comprises a raw gas exhaust structure according to any one of claims 1 to 8.

10. The raw gas scrubbing system according to claim 9, characterized in that it comprises a venturi scrubber (30) and a scrubbing tower (40), the exhaust end of the exhaust pipe (11) being connected to the venturi scrubber (30), the output end of the venturi scrubber (30) being connected to the scrubbing tower (40).

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