CN110835558A - Coal gas cleaner for cleaning coal dust entrained in coal gas - Google Patents
Coal gas cleaner for cleaning coal dust entrained in coal gas Download PDFInfo
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- CN110835558A CN110835558A CN201911242571.5A CN201911242571A CN110835558A CN 110835558 A CN110835558 A CN 110835558A CN 201911242571 A CN201911242571 A CN 201911242571A CN 110835558 A CN110835558 A CN 110835558A
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/02—Dust removal
- C10K1/026—Dust removal by centrifugal forces
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/08—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors
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- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Coke Industry (AREA)
Abstract
The invention relates to a coal gas cleaner for cleaning coal dust carried in coal gas, which comprises a bottom plate, a cylinder, a central pipe, a spiral liquid descending line, a rotary fog device, an annular ring, an annular spraying device, a top cover, a cleaning liquid inlet pipe, a coal gas inlet pipe, a flange cover, a flange, an overflow weir, an annular vertical plate, a coal gas outlet pipe, a liquid discharge port, a full flow port and a water replenishing port. The beneficial effects are as follows: the device is arranged in front of the primary cooler, can eliminate complex medium working conditions in the primary cooler, removes coal dust entrained in coal gas in advance, avoids blocking a corrosion pipeline, improves the running stability of a coal gas system, improves the product quality, and has the advantages of simple structure and high cleaning efficiency.
Description
Technical Field
The invention relates to the technical field of coke oven gas washing, in particular to a gas washer for washing coal dust carried in gas.
Background
In the coking industry, tar mist, water mist and tar residues carried by coal gas in a primary cooler are carried to a liquid breaking disc by the coal gas flow and are discharged. However, due to the shortage of coking coal sources and the requirement of smokeless coal charging of the coke oven, the fineness of coking coal blending is increased, the negative pressure of a gas collecting pipeline is increased, a large amount of coal powder enters a primary cooler along with raw gas, and the coal powder and the separated naphthalene are bonded together by tar to generate viscous tar residues. The tar slag is seriously blocked at the liquid breaking disc, so that the resistance of the equipment is large, and the stable operation of a gas system is seriously influenced; even coal dust is brought into the subsequent flow, so that the pipeline of the equipment is blocked and corroded, and the product quality is influenced.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention solves the technical problem of providing the coal gas cleaner for cleaning coal powder carried in coal gas, which is arranged in front of a primary cooler, can eliminate the complex medium working condition in the primary cooler, removes the coal powder carried in the coal gas in advance, avoids blocking a corrosion pipeline, improves the running stability of a coal gas system, improves the product quality, and has the advantages of simple structure and high cleaning efficiency.
In order to achieve the purpose, the invention adopts the following technical scheme:
a coal gas cleaner for cleaning coal dust carried in coal gas comprises a bottom plate, a cylinder body, a central tube, a spiral liquid descending line, a rotary fog device, an annular ring, an annular spraying device, a top cover, a cleaning liquid inlet tube, a coal gas inlet tube, a flange cover, a flange, an overflow weir, an annular vertical plate, a coal gas outlet tube, a liquid discharge port, a full flow port and a water replenishing port, and is characterized in that the bottom plate is fixedly arranged at the lower part of the cylinder body, and the top cover is fixedly arranged at the upper part of the cylinder body; the lower part of the right side of the cylinder body is sequentially provided with a liquid discharge port, a full flow port and a water replenishing port from bottom to top, the upper part of the right side is provided with a coal gas outlet pipe, the upper part of the left side is provided with an annular spraying device, and the center of the inside of the cylinder body is provided with a central pipe; the central tube consists of a straight tube section, a contraction section, a throat section and an expansion section, wherein the straight tube section, the contraction section, the throat section and the expansion section are sequentially connected, the straight tube section is fixedly connected with the top cover, and the end part of the straight tube section is connected with the flange; the gas inlet pipe is fixedly connected with the flange cover, and the flange cover is fixedly connected with the flange through bolts; the washing liquid inlet pipe penetrates through the flange cover, is fixedly connected with the flange cover and is inserted into the central pipe contraction section; the overflow weir is arranged below the washing liquid inlet pipe; the mist rotating device is arranged between the outside of the expansion section of the central pipe and the barrel; the annular ring is connected with the cylinder, and the annular vertical plates are a plurality of liquid baffle plates formed by connecting one end of each annular ring and the other end of each annular vertical plate with the throat section of the central tube; the spiral liquid descending line is spirally arranged on the inner wall of the cylinder body at equal intervals by using round steel, and the spiral direction is the same as the rotating direction of the rotary fog device.
The shape change of the central tube from the straight tube section to the expansion section is sequentially straight tube-contraction-straight tube-expansion, and the cross section of the central tube is rectangular.
The gas inlet pipe is inserted into the flange cover, and the insertion depth is 10-20 mm below the contraction section of the central pipe.
The overflow weir is formed by connecting a receiving groove and an overflow plate, the receiving groove is connected with the contraction surface of the contraction section of the central pipe, and the overflow plate is a rectangular plate with a sawtooth-shaped top end.
The washing liquid inlet pipe is inserted into the central pipe contraction section, the end of the washing liquid inlet pipe is flush with the contraction face of the central pipe contraction section, and the distance between the washing liquid inlet pipe and the bottom of the receiving groove is 50-100 mm.
The coal gas outlet pipe is tangentially connected with the cylinder and has the same rotating direction with the mist rotating device.
The fog rotating device is composed of 36 fog rotating plates, one end of each fog rotating plate is connected with the central pipe expanding section, the other end of each fog rotating plate is connected with the inner wall of the cylinder body in a spiral mode, and a gap is reserved between every two fog rotating plates.
And a gap is reserved between every two annular vertical plates.
Compared with the prior art, the invention has the beneficial effects that:
1) the coal dust entrained in the coal gas can be removed in advance, the working condition of complex media in the primary cooler is eliminated, viscous tar residues are prevented from blocking the primary cooler, the stable operation of the system is facilitated, and the device has the advantages of simple structure and high cleaning efficiency;
2) the coal gas undergoes gas velocity increase-invariable-decrease in the change process of the section of the central tube, and when the gas velocity suddenly changes, the coal powder contacts and is trapped by the cleaning liquid at the bottom of the cleaner due to the inertia effect;
3) the rotary atomizing device can remove water vapor carried by the coal gas and carry out rotary separation by utilizing centrifugal force;
4) the liquid baffle further removes liquid in the gas through collision with the rotating gas;
5) the spiral liquid descending line can ensure that the gas flow speed on the inner wall surface of the gas cleaner is low and stable, which is beneficial to the liquid condensation of the tower wall and avoids the entrainment of the separated liquid.
Drawings
FIG. 1 is a schematic diagram of the process structure of the present invention;
FIG. 2 is a schematic front view of the structure of the center tube of the present invention;
FIG. 3 is a schematic left side view of the structure of the center tube of the present invention.
In the figure: 1-bottom plate 2-cylinder 3-liquid discharge port 4-spiral liquid descending line 5-rotary fog device 6-expansion section 7-annular ring 8-throat section 9-annular spraying device 10-top cover 11-contraction section 12-straight pipe section 13-cleaning liquid inlet pipe 14-gas inlet pipe 15-flange cover 16-flange 17-overflow plate 18-gas outlet pipe 19-water replenishing port 20-full flow port 21-annular vertical plate 22-receiving groove
Detailed Description
The following further describes embodiments of the present invention with reference to the accompanying drawings:
as shown in fig. 1-3, the gas cleaner for cleaning coal dust carried in gas according to the present invention comprises a bottom plate 1, a cylinder 2, a central tube, a spiral liquid descending line 4, a spiral mist device 5, an annular ring 7, an annular spraying device 9, a top cover 10, a cleaning liquid inlet pipe 13, a gas inlet pipe 14, a flange cover 15, a flange 16, an overflow weir, an annular vertical plate 21, a gas outlet pipe 18, a liquid discharge port 3, a full flow port 20 and a water replenishing port 19, wherein the bottom plate 1 is fixedly disposed at a lower portion of the cylinder 2, and the top cover 10 is fixedly disposed at an upper portion of the cylinder 2 to form an equipment housing; the lower part of the right side of the cylinder body 2 is sequentially provided with a liquid outlet 3, a full flow port 20 and a water replenishing port 19 from bottom to top, the upper part of the right side is provided with a coal gas outlet pipe 18, the upper part of the left side is provided with an annular spraying device 9, and the center of the inside is provided with a central pipe; the central tube consists of a straight tube section 12, a contraction section 11, a throat section 8 and an expansion section 6, wherein the straight tube section 12, the contraction section 11, the throat section 8 and the expansion section 6 are sequentially connected, the straight tube section 12 is fixedly connected with the top cover 10, and the end part of the straight tube section is connected with a flange 16; the gas inlet pipe 14 is fixedly connected with a flange cover 15, and the flange cover 15 is fixedly connected with a flange 16 through bolts; the washing liquid inlet pipe 13 penetrates through the flange cover 15, is fixedly connected with the flange cover 15, and is inserted into the central pipe contraction section 11; the overflow weir is arranged at the lower part of the washing liquid inlet pipe 13; the mist rotating device 5 consists of 36 mist rotating plates and is arranged between the outside of the central pipe expanding section 6 and the cylinder body 2; the annular ring 7 is connected with the cylinder body 2, and the annular vertical plates 21 are a plurality of liquid baffle plates formed by connecting one ends of the annular rings 7 and connecting the other ends of the annular vertical plates with the throat section 8 of the central pipe; the spiral liquid descending line 4 is spirally arranged on the inner wall of the barrel 2 at equal intervals by adopting round steel, and the spiral direction is the same as the rotating direction of the rotary fog device 5.
The shape change of the central tube from the straight tube section 12 to the expansion section 6 is a straight tube-contraction-straight tube-expansion in sequence, and the cross section of the central tube is rectangular (shown in figures 2 and 3).
The gas inlet pipe 14 is inserted into the flange cover 15, and the insertion depth is 10-20 mm below the central pipe contraction section 11
The overflow weir is formed by connecting a receiving groove 22 and an overflow plate 17, the receiving groove 22 is connected with the contraction surface of the central pipe contraction section 11, and the overflow plate 17 is a rectangular plate with a sawtooth-shaped top end, so that the washing liquid can flow out conveniently.
The washing liquid inlet pipe 13 is inserted into the central pipe contraction section 11, the end part of the washing liquid inlet pipe is flush with the contraction surface of the central pipe contraction section 11, and the distance between the washing liquid inlet pipe and the bottom of the receiving groove 22 is 50-100 mm.
The gas outlet pipe 18 is tangentially connected with the cylinder 2 and has the same rotating direction with the mist rotating device 5.
Gaps are reserved between every two annular vertical plates 21 and are used as passages for washing liquid and coal gas.
The mist rotating device 5 is composed of 36 mist rotating plates, one end of each mist rotating plate is connected with the central pipe expanding section 6, the other end of each mist rotating plate is connected with the inner wall of the cylinder 2 in a spiral arrangement mode, and gaps are reserved between every two mist rotating plates to serve as a washing liquid and gas channel to separate mist from foam in a rotating mode.
When in work: firstly, opening a washing liquid inlet pipe 13 to ensure that the liquid level reaches the position of a full flow port 20; coal gas is introduced from a coal gas inlet pipe 14, the coal gas undergoes the processes of increasing, keeping unchanged and reducing the coal gas speed in the change process of the section of the central pipe (12+11+8+6), and when the coal gas speed suddenly reduces, coal powder is separated from the coal gas due to the inertia effect and is contacted and trapped with the cleaning solution at the bottom of the cylinder body 2; the coal gas returning from the liquid surface passes through a rotary fog device 5, and is subjected to rotary separation by using centrifugal force to remove water vapor carried by the coal gas; the separated liquid falls to the inner wall of the cylinder 2, flows to the spiral liquid descending line 4 and then flows into the liquid at the bottom of the cylinder 3; the gas rotating upwards collides with the liquid baffle plate (7+21) to further remove the liquid therein; the coal gas from which the coal dust and liquid are removed exits tangentially from the gas outlet pipe 18.
The cleaning liquid flows into the receiving groove 22 firstly, flows out from the zigzag gap of the overflow plate 17 after full flow, and the overflow flow can make the cleaning liquid flow out uniformly without bias flow for cleaning the pulverized coal accumulated in the contraction section 11.
After the device runs for a period of time, the annular spraying device 9 is opened, and the coal dust impurities accumulated on the inner wall of the cylinder 2 can be cleaned; when the cleaning liquid at the bottom of the barrel 2 contains too much coal powder and impurities and needs to be replaced and cleaned, the cleaning liquid can be discharged by opening the liquid outlet 3, and meanwhile, water can be supplemented through the water supplementing opening 19 for washing.
When the liquid level at the bottom of the cylinder 2 is higher than the full flow port 20, the redundant liquid is discharged from the full flow port 20.
Claims (8)
1. A coal gas cleaner for cleaning coal dust carried in coal gas comprises a bottom plate, a cylinder body, a central tube, a spiral liquid descending line, a rotary fog device, an annular ring, an annular spraying device, a top cover, a cleaning liquid inlet tube, a coal gas inlet tube, a flange cover, a flange, an overflow weir, an annular vertical plate, a coal gas outlet tube, a liquid discharge port, a full flow port and a water replenishing port, and is characterized in that the bottom plate is fixedly arranged at the lower part of the cylinder body, and the top cover is fixedly arranged at the upper part of the cylinder body; the lower part of the right side of the cylinder body is sequentially provided with a liquid discharge port, a full flow port and a water replenishing port from bottom to top, the upper part of the right side is provided with a coal gas outlet pipe, the upper part of the left side is provided with an annular spraying device, and the center of the inside of the cylinder body is provided with a central pipe; the central tube consists of a straight tube section, a contraction section, a throat section and an expansion section, wherein the straight tube section, the contraction section, the throat section and the expansion section are sequentially connected, the straight tube section is fixedly connected with the top cover, and the end part of the straight tube section is connected with the flange; the gas inlet pipe is fixedly connected with the flange cover, and the flange cover is fixedly connected with the flange through bolts; the washing liquid inlet pipe penetrates through the flange cover, is fixedly connected with the flange cover and is inserted into the central pipe contraction section; the overflow weir is arranged below the washing liquid inlet pipe; the mist rotating device is arranged between the outside of the expansion section of the central pipe and the barrel; the annular ring is connected with the cylinder, and the annular vertical plates are a plurality of liquid baffle plates formed by connecting one end of each annular ring and the other end of each annular vertical plate with the throat section of the central tube; the spiral liquid descending line is spirally arranged on the inner wall of the cylinder body at equal intervals by using round steel, and the spiral direction is the same as the rotating direction of the rotary fog device.
2. The gas cleaner for cleaning coal dust entrained in gas as claimed in claim 1, wherein the shape change of the central tube from the straight tube section to the expanding section is straight tube-contraction-straight tube-expansion in sequence, and the cross section of the central tube is rectangular.
3. The coal gas cleaner for cleaning coal dust entrained in coal gas as claimed in claim 1, wherein the coal gas inlet pipe is inserted into the flange cover, and the insertion depth is 10-20 mm below the contracted section of the central pipe.
4. The gas cleaner for cleaning coal dust entrained in gas as claimed in claim 1, wherein the overflow weir is formed by connecting a receiving groove and an overflow plate, the receiving groove is connected with the contraction surface of the contraction section of the central tube, and the overflow plate is a rectangular plate with a sawtooth-shaped top end.
5. The coal gas cleaner for cleaning coal dust entrained in coal gas as claimed in claim 1, wherein the cleaning solution inlet pipe is inserted into the central pipe contraction section, the end part of the cleaning solution inlet pipe is flush with the contraction surface of the central pipe contraction section, and the distance between the cleaning solution inlet pipe and the bottom of the receiving groove is 50-100 mm.
6. The gas cleaner for cleaning coal dust entrained in gas as claimed in claim 1, wherein the gas outlet pipe is tangentially connected to the cylinder and rotates in the same direction as the rotary atomizing device.
7. The gas cleaner for cleaning the coal dust entrained in the gas as claimed in claim 1, wherein the mist rotating device is composed of 36 mist rotating plates, one end of each mist rotating plate is connected with the expansion section of the central tube, the other end of each mist rotating plate is connected with the inner wall of the cylinder body in a spiral arrangement, and a gap is reserved between every two mist rotating plates.
8. The gas cleaner for cleaning coal dust entrained in gas as claimed in claim 1, wherein a gap is left between every two annular vertical plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911242571.5A CN110835558A (en) | 2019-12-06 | 2019-12-06 | Coal gas cleaner for cleaning coal dust entrained in coal gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911242571.5A CN110835558A (en) | 2019-12-06 | 2019-12-06 | Coal gas cleaner for cleaning coal dust entrained in coal gas |
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| Publication Number | Publication Date |
|---|---|
| CN110835558A true CN110835558A (en) | 2020-02-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911242571.5A Pending CN110835558A (en) | 2019-12-06 | 2019-12-06 | Coal gas cleaner for cleaning coal dust entrained in coal gas |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111701429A (en) * | 2020-07-03 | 2020-09-25 | 中冶焦耐(大连)工程技术有限公司 | Stabilizer tail gas purification device |
-
2019
- 2019-12-06 CN CN201911242571.5A patent/CN110835558A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111701429A (en) * | 2020-07-03 | 2020-09-25 | 中冶焦耐(大连)工程技术有限公司 | Stabilizer tail gas purification device |
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