CN115386402A - Integrated desulfurization regeneration device and use method thereof - Google Patents
Integrated desulfurization regeneration device and use method thereof Download PDFInfo
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- CN115386402A CN115386402A CN202211043755.0A CN202211043755A CN115386402A CN 115386402 A CN115386402 A CN 115386402A CN 202211043755 A CN202211043755 A CN 202211043755A CN 115386402 A CN115386402 A CN 115386402A
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- desulfurization
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- regeneration
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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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- 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
- C10K1/002—Removal of contaminants
- C10K1/003—Removal of contaminants of acid contaminants, e.g. acid gas removal
- C10K1/004—Sulfur containing contaminants, e.g. hydrogen sulfide
Abstract
The invention relates to the field of coal gas purification by a spraying method, in particular to an integrated desulfurization regeneration device and a using method thereof. The utility model provides an integral type desulfurization regenerating unit, includes tower body (6), characterized by: the tower body (6) comprises a tail gas recovery section (1), a regeneration section (2), a mist catching section (3), a desulfurization section (4) and a reaction tank (5), wherein the tail gas recovery section (1) is arranged at the top of the tower body (6); the regeneration section (2) is arranged at the lower part of the tail gas recovery section (1) of the tower body (6); the mist catching section (3) is arranged at the upper part of the desulfurization section (4) of the tower body (6); the desulfurization section (4) is arranged at the lower part of the mist catching section (3) of the tower body (6); the reaction tank (5) is arranged at the lower part of the desulfurization section (4). The use method of the integrated desulfurization regeneration device is characterized by comprising the following steps: the method is implemented in sequence according to the following steps: (1) recovering; (2) regeneration; (3) mist catching; (4) desulfurizing; (5) and (4) reacting. The invention has high desulfurization efficiency and low operation cost.
Description
Technical Field
The invention relates to the field of coal gas purification by a spraying method, in particular to an integrated desulfurization regeneration device and a use method thereof.
Background
Coke oven gas, as a by-product produced during the coking process, has been widely used in the fields of fuels, chemical raw materials, and the like. However, the coke oven gas which is not purified contains a plurality of gas components, especially tar, naphthalene, hydrogen cyanide, hydrogen sulfide and a plurality of organic sulfur with complex structures, so that the coke oven gas is complex and difficult to desulfurize. The presence of hydrogen sulfide and hydrogen cyanide not only causes corrosion of equipment and pipelines and poisoning of catalysts, but also threatens personal safety more seriously and environmental pollutants must be eliminated or controlled.
At present, the traditional desulfurization section is provided with independent devices such as a high tower regeneration device, a desulfurization device, a sulfur foam tank, a reaction tank, a circulating pump and the like. Has the disadvantages of high failure rate, high power consumption for operation, wide occupied area, high operation cost and the like.
Disclosure of Invention
The invention discloses an integrated desulfurization regeneration device and a using method thereof, aiming at overcoming the defects of the prior art and providing gas purification equipment with high equipment integration level, low operating cost, small occupied area and low engineering investment.
The invention achieves the purpose through the following technical scheme:
the utility model provides an integral type desulfurization regenerating unit, includes the tower body, characterized by: the tower body comprises a tail gas recovery section, a regeneration section, a mist catching section, a desulfurization section and a reaction tank,
the tail gas recovery section is arranged at the top of the tower body;
the regeneration section is arranged at the lower part of the tower body tail gas recovery section, a regeneration spray head, a regeneration tank, a foam tank and a liquid level regulator are arranged in the regeneration section, the regeneration spray head, the regeneration tank and the foam tank are respectively arranged at the upper part, the middle part and the lower part of the regeneration section, and one end of the liquid level regulator is arranged in the regeneration tank;
the mist catching section is arranged at the upper part of the tower body desulfurization section, and mist catching filler is arranged in the mist catching section;
the desulfurization section is arranged at the lower part of the mist catching section of the tower body, the upper part of the desulfurization section is provided with a desulfurization spray head, the other end of the liquid level regulator is connected with the desulfurization spray head, and desulfurization filler and a distributor are arranged in the desulfurization section;
the reaction tank is arranged at the lower part of the desulfurization section, and the desulfurization liquid outlet of the reaction tank is connected with the regeneration spray head through a liquid conveying pipe connected with a circulating pump in series.
The integrated desulfurization regeneration device is characterized in that: liquid level meters are arranged in the regeneration tank and the foam tank.
The using method of the integrated desulfurization regeneration device is characterized in that: the method is implemented in sequence according to the following steps:
(1) and (3) recovering: the tail gas recovery section positioned at the top of the tower body recovers waste gas generated in the tower body and circulates the waste gas to the next regeneration section;
(2) regeneration: the regeneration section carries out atomization injection on the desulfurization rich solution through a regeneration nozzle, the desulfurization rich solution is oxidized to be regenerated and is converged into a regeneration tank, sulfur foam separated from the desulfurization rich solution is suspended at the upper part of the regeneration tank, the desulfurization rich solution becomes desulfurization barren solution after the sulfur foam is separated from the desulfurization rich solution, the sulfur foam continuously and automatically flows to a foam tank through the regulation of a liquid level regulator, and the desulfurization barren solution automatically flows to the desulfurization nozzle of the desulfurization section through the liquid level regulator to spray washing gas;
(3) mist catching: liquid carried by the coal gas is absorbed by the mist capturing filler when the coal gas flows through the mist capturing section;
(4) and (3) desulfurization: in the desulfurization section, the coal gas advances from bottom to top along the desulfurization section, the desulfurization barren solution is sprayed from top to bottom from the desulfurization spray head at the upper part, the coal gas and the desulfurization barren solution are in countercurrent contact, and the desulfurization barren solution enables H in the coal gas to be contained in the desulfurization barren solution 2 S and HCN are absorbed to become desulfurization rich liquid;
(5) reaction: absorb H 2 The desulfurization rich solution after S and HCN flows into a reaction tank, and catalysts HPF and H are added into the reaction tank 2 S, HCN and NH 3 And (3) carrying out reaction to generate elemental sulfur, pressurizing the reacted desulfurization rich solution by a circulating pump, conveying the desulfurization rich solution to a regeneration nozzle of a regeneration section, carrying out oxidation regeneration in the regeneration section, circulating from the step (2), continuously carrying out desulfurization on the coal gas, and repeating the steps.
The invention can fully separate H in the coal gas 2 And S and HCN realize tail gas self-circulation, greatly reduce tail gas emission and maximally recycle the desulfurization solution and the tail gas.
The invention has the following beneficial effects: the desulfurization efficiency is high, the process flow is short, the equipment integration level is high, the operation cost is low, the occupied area is small, the engineering investment is low, the tail gas self-circulation is realized, and the tail gas emission is greatly reduced.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Detailed Description
The invention is further illustrated by the following specific examples.
Example 1
An integrated desulfurization regeneration device comprises a tower body 6, as shown in figure 1, the specific structure is as follows:
the tower body 6 comprises a tail gas recovery section 1, a regeneration section 2, a mist catching section 3, a desulfurization section 4 and a reaction tank 5,
the tail gas recovery section 1 is arranged at the top of the tower body 6;
the regeneration section 2 is arranged at the lower part of the tail gas recovery section 1 of the tower body 6, a regeneration nozzle 21, a regeneration tank 22, a foam tank 23 and a liquid level regulator 24 are arranged in the regeneration section 2, the regeneration nozzle 21, the regeneration tank 22 and the foam tank 23 are respectively arranged at the upper part, the middle part and the lower part of the regeneration section 2, and one end of the liquid level regulator 24 is arranged in the regeneration tank 22;
the mist catching section 3 is arranged at the upper part of the desulfurization section 4 of the tower body 6, and mist catching filler 31 is arranged in the mist catching section 3;
the desulfurization section 4 is arranged at the lower part of the mist catching section 3 of the tower body 6, the upper part of the desulfurization section 4 is provided with a desulfurization spray nozzle 41, the other end of the liquid level regulator 24 is connected with the desulfurization spray nozzle 41, and the desulfurization section 4 is internally provided with desulfurization filler 42 and a distributor 43;
the reaction tank 5 is provided at the lower part of the desulfurization section 4, and the desulfurization solution outlet of the reaction tank 5 is connected to the regeneration nozzle 21 through a liquid transport pipe connected in series with a circulation pump.
In this embodiment: liquid level meters are arranged in the regeneration tank 22 and the foam tank 23.
When the method is used, the steps are implemented in sequence as follows:
(1) and (3) recovering: the tail gas recovery section 1 positioned at the top of the tower body 6 recovers the waste gas generated in the tower body 6 and circulates to the lower regeneration section 2;
(2) regeneration: the regeneration section 2 atomizes and sprays the desulfurization rich solution through a regeneration nozzle 21, the desulfurization rich solution is oxidized to be regenerated and collected into a regeneration tank 22, sulfur foam separated from the desulfurization rich solution is suspended at the upper part of the regeneration tank 22, the desulfurization rich solution becomes desulfurization lean solution after the sulfur foam is separated from the desulfurization rich solution, the sulfur foam continuously flows to a foam tank 23 through the regulation of a liquid level regulator 24, and the desulfurization lean solution automatically flows to a desulfurization nozzle 41 of the desulfurization section 4 through the liquid level regulator 24 to spray washing gas;
(3) mist catching: liquid carried by the coal gas is absorbed by the mist trapping filler 31 when the coal gas flows through the mist trapping section 3;
(4) and (3) desulfurization: in the desulfurization section 4, coal gas advances from bottom to top along the desulfurization section 4 through a distributor 43, desulfurization barren solution is sprayed from the upper part to the lower part through a desulfurization solution spray nozzle 41, the coal gas is fully contacted with the desulfurization barren solution on a filler 42, and the desulfurization barren solution absorbs H2S and HCN in the coal gas to form desulfurization rich solution;
(5) reaction: absorb H 2 The desulfurization rich solution after S and HCN flows into a reaction tank 5, and catalysts HPF and H are added into the reaction tank 5 2 S, HCN and NH 3 And (3) carrying out reaction to generate elemental sulfur, pressurizing the reacted desulfurization rich solution by a circulating pump, conveying the desulfurization rich solution to a regeneration nozzle 21 of the regeneration section 2, carrying out oxidation regeneration in the regeneration section 2, circulating from the step (2), continuously desulfurizing the coal gas, and repeating the steps.
Claims (3)
1. The utility model provides an integral type desulfurization regenerating unit, includes tower body (6), characterized by: the tower body (6) comprises a tail gas recovery section (1), a regeneration section (2), a mist catching section (3), a desulfurization section (4) and a reaction tank (5),
the tail gas recovery section (1) is arranged at the top of the tower body (6);
the regeneration section (2) is arranged at the lower part of the tail gas recovery section (1) of the tower body (6), a regeneration spray head (21), a regeneration tank (22), a foam tank (23) and a liquid level regulator (24) are arranged in the regeneration section (2), the regeneration spray head (21), the regeneration tank (22) and the foam tank (23) are respectively arranged at the upper part, the middle part and the lower part of the regeneration section (2), and one end of the liquid level regulator (24) is arranged in the regeneration tank (22);
the mist catching section (3) is arranged at the upper part of the desulfurization section (4) of the tower body (6), and mist catching filler (31) is arranged in the mist catching section (3);
the desulfurization section (4) is arranged at the lower part of the mist catching section (3) of the tower body (6), the upper part of the desulfurization section (4) is provided with a desulfurization spray head (41), the other end of the liquid level regulator (24) is connected with the desulfurization spray head (41), and desulfurization filler (42) and a distributor (43) are arranged in the desulfurization section (4);
the reaction tank (5) is arranged at the lower part of the desulfurization section (4), and the desulfurization solution outlet of the reaction tank (5) is connected with the regeneration spray head (21) through a liquid conveying pipe connected with a circulating pump in series.
2. The integrated desulfurization regenerating unit according to claim 1, characterized in that: liquid level meters are arranged in the regeneration tank (22) and the foam tank (23).
3. The use method of the integrated desulfurization regeneration device according to claim 1 or 2, characterized in that: the method is implemented in sequence according to the following steps:
(1) and (3) recovering: the tail gas recovery section (1) positioned at the top of the tower body (6) recovers waste gas generated in the tower body (6) and circulates the waste gas to the lower regeneration section (2);
(2) regeneration: the regeneration section (2) atomizes and sprays the desulfurization rich solution through a regeneration nozzle (21), the desulfurization rich solution is oxidized to be regenerated and is converged into a regeneration tank (22), sulfur foam separated from the desulfurization rich solution is suspended at the upper part of the regeneration tank (22), the desulfurization rich solution becomes desulfurization lean solution after the sulfur foam is separated from the desulfurization rich solution, the liquid level is adjusted through a liquid level adjuster (24), the sulfur foam continuously and automatically flows to a foam tank (23), and the desulfurization lean solution automatically flows to a desulfurization nozzle (41) of the desulfurization section (4) through the liquid level adjuster (24) to spray and wash coal gas;
(3) mist catching: liquid carried by the coal gas is absorbed by the mist trapping packing (31) when the coal gas flows through the mist trapping section (3);
(4) and (3) desulfurization: in the desulfurization section (4), coal gas moves from bottom to top along the desulfurization section (4) through a distributor (43), desulfurization barren solution is sprayed from top to bottom through a desulfurization solution nozzle (41), the coal gas and the desulfurization barren solution are fully contacted on a filler (42), and H in the coal gas is fully extracted by the desulfurization barren solution 2 S and HCN are absorbed to become desulfurization pregnant solution;
(5) reaction: absorb H 2 The desulfurization rich solution after S and HCN flows into a reaction tank (5), and catalysts HPF and H are added into the reaction tank (5) 2 S, HCN and NH 3 Reacting to generate elemental sulfur, pumping the reacted desulfurization rich solution to a regeneration nozzle (21) of the regeneration section (2) by a circulating pump, oxidizing and regenerating in the regeneration section (2), circulating from the step (2), and continuously desulfurizing the coal gas, and repeating the steps.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211043755.0A CN115386402A (en) | 2022-08-30 | 2022-08-30 | Integrated desulfurization regeneration device and use method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211043755.0A CN115386402A (en) | 2022-08-30 | 2022-08-30 | Integrated desulfurization regeneration device and use method thereof |
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| CN115386402A true CN115386402A (en) | 2022-11-25 |
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| CN202211043755.0A Pending CN115386402A (en) | 2022-08-30 | 2022-08-30 | Integrated desulfurization regeneration device and use method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014161757A (en) * | 2013-02-21 | 2014-09-08 | Mitsubishi Heavy Ind Ltd | System and method for recovering gas containing co2 and h2s |
| CN104762110A (en) * | 2015-03-15 | 2015-07-08 | 辽宁圣赫机械制造成套设备有限公司 | Coking gas desulfuration-regeneration integrated column having multilayer spray structure |
| CN106215613A (en) * | 2016-09-19 | 2016-12-14 | 北京安好嘉兴科技开发有限公司 | Sulfurous gas desulphurization plant |
| WO2020147607A1 (en) * | 2019-01-17 | 2020-07-23 | 中冶焦耐(大连)工程技术有限公司 | Process and system for treating tail gas from desulfurization regeneration tower for coke oven coal gas |
| CN212476648U (en) * | 2020-05-27 | 2021-02-05 | 宁波中科远东催化工程技术有限公司 | Desulfurization regeneration tower |
-
2022
- 2022-08-30 CN CN202211043755.0A patent/CN115386402A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014161757A (en) * | 2013-02-21 | 2014-09-08 | Mitsubishi Heavy Ind Ltd | System and method for recovering gas containing co2 and h2s |
| CN104762110A (en) * | 2015-03-15 | 2015-07-08 | 辽宁圣赫机械制造成套设备有限公司 | Coking gas desulfuration-regeneration integrated column having multilayer spray structure |
| CN106215613A (en) * | 2016-09-19 | 2016-12-14 | 北京安好嘉兴科技开发有限公司 | Sulfurous gas desulphurization plant |
| WO2020147607A1 (en) * | 2019-01-17 | 2020-07-23 | 中冶焦耐(大连)工程技术有限公司 | Process and system for treating tail gas from desulfurization regeneration tower for coke oven coal gas |
| CN212476648U (en) * | 2020-05-27 | 2021-02-05 | 宁波中科远东催化工程技术有限公司 | Desulfurization regeneration tower |
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