CN217449625U

CN217449625U - Absorption and regeneration integrated wet-process sulfur recovery device

Info

Publication number: CN217449625U
Application number: CN202221210593.0U
Authority: CN
Inventors: 任广欣; 张林鲁; 孙彪; 李堆; 侯建平; 李士通; 张鹏; 马有龙; 陈阳
Original assignee: Sinopec Northwest Oil Field Co
Current assignee: Sinopec Northwest Oil Field Co
Priority date: 2022-05-20
Filing date: 2022-05-20
Publication date: 2022-09-20
Anticipated expiration: 2032-05-20

Abstract

The utility model relates to an absorption regeneration integration wet process sulphur recovery unit, it comprises acidizing fluid knockout drum, absorption regeneration integrative tower, purification gas knockout drum, pressure filter, solution heat exchanger, fan, circulating pump and sulphur stuff pump. The absorption and regeneration integrated tower is divided into an absorption area and a regeneration area, and is divided by a middle conical partition plate, the conical bottom of the partition plate is connected with a liquid guide pipe which extends to a position below the liquid level of the regeneration area, and the conical bottom is directly connected with the regeneration area. The utility model discloses especially in the little and higher operating mode of hydrogen sulfide content of the amount of wind, the design of absorption tower and regenerator column integration, greatly reduced take place the stifled possibility of sulphur in the pipeline, reduced the maintenance cost, the investment cost of the equipment that the flow that is simple simultaneously also reduces.

Description

Absorption and regeneration integrated wet-process sulfur recovery device

Technical Field

The utility model relates to an absorption regeneration integration wet process sulfur recovery unit belongs to gas purification technical field.

Background

The complex iron wet desulphurization process is widely applied to the hydrogen sulfide removal process of sulfur-containing gases such as natural gas, methane, coal gas, coking gas and the like due to high efficiency, greenness, low cost and low energy consumption. In the traditional wet-process sulfur recovery of complex iron wet-process desulfurization, an absorption tower and an oxidation tower are generally separately designed, the size of the absorption tower is mainly determined by gas quantity, the size of the absorption tower is smaller for low-gas-quantity gas with high hydrogen sulfide content, the sulfur content in a system medicament is higher, the fault tolerance of equipment is poor in the actual operation process, and sulfur blockage can easily occur in the absorption tower or a connecting pipeline between the absorption tower and the oxidation tower due to too high sulfur content.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provide an absorption and regeneration integrated wet-process sulfur recovery device.

The utility model provides a technical scheme as follows: an absorption and regeneration integrated wet-process sulfur recovery device comprises an acid liquor separation tank, a purified gas separation tank, a filter press, a solution heat exchanger, a fan, a circulating pump and a sulfur slurry pump, and is characterized by further comprising an absorption and regeneration integrated tower, wherein the absorption and regeneration integrated tower comprises an absorption area at the upper part, a regeneration area at the lower part and a conical bottom at the bottom, a conical partition plate is arranged between the absorption area and the regeneration area, a plurality of absorption nozzles are arranged above the absorption area, and an acid gas distributor is arranged at the bottom; a regeneration nozzle is arranged above the regeneration area, an emptying pipeline is arranged at the top of the regeneration area, a gas distributor is arranged at the bottom of the regeneration area, a liquid guide pipe is connected to the conical bottom of the conical partition plate, and the liquid guide pipe extends into the regeneration area below the liquid level and is positioned above the gas distributor; the conical bottom is provided with a purging ring; the gas outlet at the top of the acid liquor separation tank is connected with the inlet of the acid gas distributor; the outlet of the fan is connected with the inlet pipeline of the gas distributor, the solution outlet at the bottom end of the regeneration zone is connected with the circulating pump, the outlet pipeline of the circulating pump is branched, one branch is connected with the solution heat exchanger and then connected with the regeneration nozzle, and the other branches are connected with the absorption nozzle of the absorption zone; an outlet at the top of the absorption and regeneration integrated tower is connected with a gas inlet of a purified gas liquid separation tank, a water return pipeline of the filter press is connected with a medicament filling pipeline, and a solution outlet at the bottom of the purified gas liquid separation tank is connected with a reflux port at the upper part of a regeneration area after being converged with the water return pipeline of the filter press; the conical bottom slurry outlet pipeline is sequentially connected with a sulfur slurry pump, and the sulfur slurry pump is connected with a filter press.

Furthermore, the number of the absorption nozzles is 2-6.

Further, the conical bottom angle of the conical partition plate is 50-65 degrees.

Furthermore, the liquid guide pipe is 300 mm-1000 mm above the gas distributor.

The utility model has the advantages that: the utility model discloses absorption tower and regenerator integrated design and the integrative tower middle part catheter design of absorption regeneration, greatly reduced among the traditional handicraft absorption tower and the pipeline easily take place the stifled possibility of sulphur, reduced the maintenance cost, the investment cost of the equipment that the flow that simplifies simultaneously also reduces is particularly useful for the little and higher operating mode of hydrogen sulfide content of the amount of wind.

Drawings

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

Detailed Description

The following detailed description of embodiments of the present invention is provided with reference to the accompanying drawings:

as shown in fig. 1, an absorption and regeneration integrated wet-process sulfur recovery device comprises an acid liquor separation tank 1, an absorption and regeneration integrated tower 2, a purified gas separation tank 3, a filter press 4, a solution heat exchanger 5, a fan 6, a circulating pump 7 and a sulfur slurry pump 8.

The absorption and regeneration integrated tower 2 is further divided into an upper absorption area 21, a lower regeneration area 22 and a bottom conical bottom 23, the middle of the absorption area 21 and the middle of the regeneration area 22 are divided by a conical partition plate 24, and the conical bottom angle of the conical partition plate 24 is 50-65 degrees. The cone bottom 23 is directly connected to the regeneration zone 22. 2-6 absorption nozzles 211 are distributed above the absorption zone 21, and an acid gas distributor 212 is arranged at the bottom of the absorption zone; a regeneration nozzle 223 is distributed above the regeneration zone 22, an emptying pipeline is arranged at the top of the regeneration zone, a gas distributor 221 is arranged at the bottom of the regeneration zone, a liquid guide pipe 222 is connected to the conical bottom of the conical partition plate 24, and the liquid guide pipe 222 extends into the position below the liquid level of the regeneration zone 22 and is 300 mm-1000 mm above the gas distributor 221 of the regeneration zone 22. The conical bottom 23 is provided with a purge ring 231.

The gas outlet at the top of the acid liquor separation tank 1 is connected with the inlet of an acid gas distributor 212 of the absorption area 21 of the absorption and regeneration integrated tower 2. The outlet of the fan 6 is connected with the inlet pipeline of the gas distributor 221 of the regeneration area 22 of the absorption and regeneration integrated tower 2, the solution outlet at the bottom end of the regeneration area 22 of the absorption and regeneration integrated tower 2 is connected with the circulating pump 7, the outlet pipeline of the circulating pump 7 is branched, one branch is connected with the solution heat exchanger 5 and then connected with the regeneration nozzle 223 of the regeneration area 22 of the absorption and regeneration integrated tower 2, and the other branches are connected with the absorption nozzle 211 of the absorption area 21. The top outlet of the absorption and regeneration integrated tower 2 is connected with the gas inlet of the purified gas liquid separating tank 3, the return water pipeline of the filter press 4 is connected with the medicament filling pipeline, and the solution outlet at the bottom of the purified gas liquid separating tank 3 is connected with the return water pipeline of the filter press 4 and then is connected with the return port at the upper part of the regeneration area 22 of the absorption and regeneration integrated tower 2. The slurry outlet pipeline of the conical bottom 23 of the absorption and regeneration integrated tower 2 is sequentially connected with a slurry pump 8, and the slurry pump 8 is connected with the filter press 4.

When the acid gas purification device is used, acid gas firstly enters the acid gas separation tank 1 to separate acid liquid, then enters the absorption area 21 of the absorption and regeneration integrated tower 2 through the acid gas distributor 212, is in reverse contact with desulfurization liquid pumped in by the circulating pump 7 through the absorption nozzle 211 in the absorption area 21, hydrogen sulfide is oxidized into sulfur, and the purified gas enters the purified gas separation tank 3 to separate sulfur particles and water vapor after being discharged from the top of the absorption and regeneration integrated tower 2 and then enters the next unit. The low-activity desulfurization solution with sulfur enters the regeneration area 22 of the absorption and regeneration integrated tower 2 through a liquid guide pipe 222, the low-activity desulfurization solution is in contact with air from a fan 6 and is oxidized and regenerated, and the vent gas exits the absorption and regeneration integrated tower 2 from the top of the regeneration area 22. The regenerated desulfurization solution is partially pumped into an absorption area 21 by a circulating pump 7 for acid gas absorption, and the rest is returned to a regeneration area 22 for defoaming after heat exchange by a solution heat exchanger 5. The sulfur in the regeneration zone 22 of the absorption and regeneration integrated tower 2 is settled to the cone bottom 23 under the action of gravity, and then is conveyed to the filter press 4 by the sulfur slurry pump 8 for solid-liquid separation, the separated desulfurization liquid, the supplemented desulfurizer and the condensed water at the bottom of the purified gas separation tank 3 are returned to the regeneration zone 22 of the absorption and regeneration integrated tower 2, and the sulfur is conveyed to the next unit.

It should be understood that parts of the specification not set forth in detail are well within the prior art. The above embodiments are only described for the preferred embodiments of the present invention, and other preferred embodiments are not described one by one, and the scope of the present invention is not limited, and those skilled in the art can make various modifications and improvements to the technical solution of the present invention without departing from the design spirit of the present invention, and all should fall within the protection scope defined by the claims of the present invention.

Claims

1. An absorption and regeneration integrated wet-process sulfur recovery device comprises an acid liquor separation tank, a purified gas separation tank, a filter press, a solution heat exchanger, a fan, a circulating pump and a sulfur slurry pump, and is characterized by further comprising an absorption and regeneration integrated tower, wherein the absorption and regeneration integrated tower comprises an absorption area at the upper part, a regeneration area at the lower part and a conical bottom at the bottom, a conical partition plate is arranged between the absorption area and the regeneration area, a plurality of absorption nozzles are arranged above the absorption area, and an acid gas distributor is arranged at the bottom; a regeneration nozzle is arranged above the regeneration area, an emptying pipeline is arranged at the top of the regeneration area, a gas distributor is arranged at the bottom of the regeneration area, a liquid guide pipe is connected to the conical bottom of the conical partition plate, and the liquid guide pipe extends into the regeneration area below the liquid level and is positioned above the gas distributor; the conical bottom is provided with a purging ring; the gas outlet at the top of the acid liquor separation tank is connected with the inlet of the acid gas distributor; the outlet of the fan is connected with the inlet pipeline of the gas distributor, the solution outlet at the bottom end of the regeneration zone is connected with the circulating pump, the outlet pipeline of the circulating pump is branched, one branch is connected with the solution heat exchanger and then connected with the regeneration nozzle, and the other branches are connected with the absorption nozzle of the absorption zone; an outlet at the top of the absorption and regeneration integrated tower is connected with a gas inlet of a purified gas liquid separation tank, a water return pipeline of the filter press is connected with a medicament filling pipeline, and a solution outlet at the bottom of the purified gas liquid separation tank is connected with a reflux port at the upper part of a regeneration area after being converged with the water return pipeline of the filter press; the conical bottom slurry outlet pipeline is sequentially connected with a sulfur slurry pump, and the sulfur slurry pump is connected with a filter press.

2. The integrated absorption and regeneration wet-process sulfur recovery device according to claim 1, wherein 2-6 absorption nozzles are provided.

3. The integrated absorption and regeneration wet-process sulfur recovery device according to claim 1, wherein the conical bottom angle of the conical partition plate is 50-65 °.

4. The integrated absorption and regeneration wet-process sulfur recovery device according to claim 1, wherein the liquid guide pipe is located 300 mm-1000 mm above the gas distributor.