CN115382333A - Device and method for removing sulfur entrained in Claus sulfur recovery tail gas - Google Patents
Device and method for removing sulfur entrained in Claus sulfur recovery tail gas Download PDFInfo
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- CN115382333A CN115382333A CN202210795399.1A CN202210795399A CN115382333A CN 115382333 A CN115382333 A CN 115382333A CN 202210795399 A CN202210795399 A CN 202210795399A CN 115382333 A CN115382333 A CN 115382333A
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- pipeline
- sulfur
- tail gas
- water
- separator
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- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 title claims abstract description 110
- 229910052717 sulfur Inorganic materials 0.000 title claims abstract description 92
- 239000011593 sulfur Substances 0.000 title claims abstract description 92
- 238000011084 recovery Methods 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 61
- 238000005406 washing Methods 0.000 claims abstract description 35
- 239000002699 waste material Substances 0.000 claims abstract description 13
- 239000007921 spray Substances 0.000 claims description 19
- 239000005864 Sulphur Substances 0.000 claims description 18
- 238000001556 precipitation Methods 0.000 claims description 8
- 238000005201 scrubbing Methods 0.000 claims description 8
- 238000007599 discharging Methods 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 7
- 238000010791 quenching Methods 0.000 claims description 7
- 238000000926 separation method Methods 0.000 claims description 5
- 239000002351 wastewater Substances 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims 1
- 239000007789 gas Substances 0.000 abstract description 61
- 238000006477 desulfuration reaction Methods 0.000 abstract description 6
- 230000023556 desulfurization Effects 0.000 abstract description 6
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 4
- 239000003546 flue gas Substances 0.000 abstract description 4
- 238000007711 solidification Methods 0.000 abstract description 4
- 230000008023 solidification Effects 0.000 abstract description 4
- 235000019738 Limestone Nutrition 0.000 abstract description 3
- 230000003203 everyday effect Effects 0.000 abstract description 3
- 239000006028 limestone Substances 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000005507 spraying Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000006467 substitution reaction Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 238000003303 reheating Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/60—Combinations of devices covered by groups B01D46/00 and B01D47/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D49/00—Separating dispersed particles from gases, air or vapours by other methods
- B01D49/003—Separating dispersed particles from gases, air or vapours by other methods by sedimentation
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention relates to the technical field of Claus sulfur production, in particular to a device and a method for removing sulfur carried in Claus sulfur recovery tail gas. The device comprises a sulfur separator, an chilling tank and a washing tower, wherein the sulfur separator is provided with a first pipeline capable of leading tail gas into the sulfur separator, the top of the sulfur separator is connected with the top of the chilling tank through a second pipeline, the second pipeline is provided with a third pipeline connected with a water supply pipeline, the top of the chilling tank is connected with the air inlet of the washing tower through a fourth pipeline, and the air outlet at the top of the washing tower is connected with the air inlet of a medium-pressure waste boiler through a pipeline. The invention reduces the content of sulfur carried in the tail gas, reduces the resistance formed by sulfur solidification in the tail gas pipeline, improves the load of the sulfur recovery device, increases the yield of the sulfur by about 6 tons every day, creates 99 ten thousand yuan per year, reduces the load of boiler flue gas desulfurization, reduces the consumption of boiler limestone, achieves 200 thousand yuan per year, and ensures the safe and stable operation of the sulfur recovery device.
Description
Technical Field
The invention relates to the technical field of Claus sulfur production, in particular to a device and a method for removing sulfur carried in Claus sulfur recovery tail gas.
Background
The sulfur recovery and sulfur production adopts the process flow of adding three-stage Claus in a combustion furnace, and the sulfur recovery tail gas is sent into the boiler through a tail gas pipeline for secondary desulfurization so as to ensure the standard emission. During the operation process, part of liquid sulfur enters the boiler due to the entrainment of the sulfur in the tail gas, resulting in the SO of the flue gas 2 The online overproof phenomenon causes environmental protection events for many times; and because the sulfur recovery tail gas pipeline is longer (about 520 m), the sulfur entrainment causes the flow area of the tail gas pipeline to be reduced, the pipeline resistance is increased, the sulfur recovery device is forced to operate in a decrement way, and the sulfur yield is influenced.
Current labour's sulphur recovery system generally adopts to install sulphur trap silk screen additional on sulphur recovery tail gas pipeline and solves above-mentioned problem, nevertheless receive the efficiency of sulphur trap silk screen separator, still have liquid sulphur fog in the sulphur recovery tail gas after the silk screen separation to smuggle secretly, simultaneously because the temperature is high, a large amount of sulphur saturated steam also gets into the tail gas pipeline along with sulphur recovery tail gas, these two parts sulphur all solidify in the tail gas pipeline, cause tail gas pipeline resistance big, reduce the operation load of sulphur recovery, sulphur solid is swept into the boiler by tail gas simultaneously and is very easily caused online SO to be extremely easily caused 2 Instantaneous exceeding standard causes environmental protection accidents.
Disclosure of Invention
Aiming at the technical problem of sulfur entrainment in the Claus sulfur recovery tail gas, the invention provides a device and a method for removing sulfur entrainment in the Claus sulfur recovery tail gas, which solve the problems that liquid sulfur blocks a tail gas pipeline and the like and ensure the safe and stable operation of a sulfur recovery device.
The device comprises a sulfur separator, an chilling tank and a washing tower, wherein the sulfur separator is provided with a first pipeline capable of leading in tail gas, the top of the sulfur separator is connected with the top of the chilling tank through a second pipeline, the second pipeline is provided with a third pipeline connected with a water supply pipeline, the top of the chilling tank is connected with an air inlet of the washing tower through a fourth pipeline, and an air outlet in the top of the washing tower is connected with an air inlet of a medium-pressure waste boiler through a pipeline.
Furthermore, the middle upper part of the outer side surface of the chilling tank is also provided with an overflow port, and the overflow port is communicated with the bottom in the washing tower through a fifth pipeline, so that the purpose is to overflow the spray precipitation to the bottom of the washing tower to be used as spray washing water, and the water source is saved.
Further, the scrubbing tower is equipped with spray water circulation mechanism, spray water circulation mechanism includes the precipitation tank, the circulating pump, the water cooler, the scrubbing tower bottom is through sixth pipe connection precipitation tank water inlet, the precipitation tank delivery port is through seventh pipe connection circulating pump water inlet, the circulating pump delivery port is through eighth pipe connection water cooler water inlet, the shower head in the water cooler delivery port passes through ninth pipe connection scrubbing tower, adopt circulation mechanism can use spray water circulation, water cooler among the circulation structure can cool down the circulating water simultaneously, when being favorable to containing sulphur tail gas to spray, make further cooling solidification of trace sulphur in the tail gas get rid of.
Furthermore, a tenth pipeline for supplementing water is arranged at the top of the settling tank, and spraying water can be introduced into the settling tank to supplement spraying water consumption.
Further, be equipped with the water seal on scrubbing tower and the waste pot connecting tube of middling pressure, specifically do, scrubbing tower top gas outlet passes through eleventh pipe connection water seal air inlet, and water seal top gas outlet passes through twelfth pipe connection waste pot air inlet of middling pressure, and aim at carries out the water seal to exhaust tail gas, keeps apart exhaust tail gas.
Furthermore, the eighth pipeline is provided with a waste water discharge pipe communicated with the T-shaped pipeline, and the waste gas generated by washing can be partially discharged outside.
In a second aspect, the invention provides a method for removing sulfur entrained in claus sulfur recovery tail gas, comprising the following steps:
s1, guiding tail gas in a tail gas pipeline into a sulfur separator through a first pipeline for sulfur separation, enabling separated sulfur to enter a liquid sulfur pool from the bottom of the sulfur separator, discharging the tail gas from the top of the sulfur separator, and guiding the tail gas into a chilling tank through a second pipeline;
s2, water is introduced into a third pipeline to spray and wash the tail gas in the second pipeline, sulfur carried in the tail gas is solidified under the washing action and enters a chilling tank for cooling, settling and separation, and the tail gas is discharged from the top of the chilling tank and enters a washing tower through a fourth pipeline for spray washing;
and S3, discharging the tail gas washed by the washing tower from the tower top, entering a middle-pressure waste boiler for reheating, entering a tail gas pipeline again, and finally entering the boiler for desulfurization again.
Further, in step S2, the water at the upper layer settled in the chilling tank overflows into the bottom in the washing tower to be used as spraying water.
The invention has the beneficial effects that:
(1) According to the invention, liquid sulfur and sulfur steam carried in the sulfur recovery tail gas are condensed and separated, so that the resistance formed by sulfur solidification in a tail gas pipeline is reduced, the load of a sulfur recovery device is increased, the yield of sulfur is increased by about 6 tons every day, and the annual effect is created by 99 ten thousand yuan;
(2) The invention reduces sulfur in tail gas, reduces load of boiler flue gas desulfurization, reduces boiler limestone consumption, and has annual effect of 200 ten thousand yuan;
(3) The invention can effectively reduce the vapor pressure of water in the tail gas, effectively reduce the condensed water of the tail gas pipeline and slow down the corrosion of the tail gas pipeline.
Drawings
In order to more clearly illustrate the embodiments or prior art solutions of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention.
In the figure, 1-a first pipeline, 2-a sulfur separator, 3-a second pipeline, 4-a circulating pump, 5-a third pipeline, 6-a fourth pipeline, 7-a chilling tank, 8-a fifth pipeline, 9-a washing tower, 10-an eleventh pipeline, 11-a tenth pipeline, 12-a sixth pipeline, 13-a water seal, 14-a twelfth pipeline, 15-a ninth pipeline, 16-a settling tank, 17-an eighth pipeline, 18-a seventh pipeline, 19-a water cooler and 20-a wastewater discharge pipe.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1, the device for removing sulfur entrained in the claus sulfur recovery tail gas comprises a sulfur separator 2, a chilling tank 7 and a washing tower 9, wherein the sulfur separator 2 is provided with a first pipeline 1 capable of leading in tail gas, the top of the sulfur separator 2 is connected with the top of the chilling tank 7 through a second pipeline 3, the second pipeline 3 is provided with a third pipeline 5 connected with a water supply pipeline, the top of the chilling tank 7 is connected with an air inlet of the washing tower 9 through a fourth pipeline 6, and an air outlet at the top of the washing tower 9 is connected with an air inlet of a medium-pressure waste boiler through a pipeline.
The middle upper part of the outer side surface of the quenching tank 7 is also provided with an overflow port which is communicated with the bottom in the washing tower 9 through a fifth pipeline 8.
The washing tower 9 is provided with a spray water circulation mechanism, the spray water circulation mechanism comprises a settling tank 16, a circulating pump 4 and a water cooler 19, the bottom of the washing tower 9 is connected with a water inlet of the settling tank 16 through a sixth pipeline 12, a water outlet of the settling tank 16 is connected with a water inlet of the circulating pump 4 through a seventh pipeline 18, a water outlet of the circulating pump 4 is connected with a water inlet of the water cooler 19 through an eighth pipeline 17, and a water outlet of the water cooler 19 is connected with a spray head in the washing tower 9 through a ninth pipeline 15.
The top of the settling tank 16 is provided with a tenth pipeline 11 for replenishing water.
A water seal 13 is arranged on a connecting pipeline between the washing tower 9 and the medium-pressure waste boiler, specifically, an air outlet at the top of the washing tower 9 is connected with an air inlet of the water seal 13 through an eleventh pipeline 10, and an air outlet at the top of the water seal 13 is connected with an air inlet of the medium-pressure waste boiler through a twelfth pipeline 14.
The eighth line 17 is provided with a waste water discharge pipe 20 communicating with the T-shape thereof.
Example 2
The invention discloses a method for removing sulfur entrained in Claus sulfur recovery tail gas, which comprises the following steps:
s1, leading tail gas in a tail gas pipeline into a sulfur separator 2 through a first pipeline 1 for sulfur separation, enabling separated sulfur to enter a liquid sulfur pool from the bottom of the sulfur separator 2, discharging the tail gas from the top of the sulfur separator 2, and leading the tail gas into a quenching tank 7 through a second pipeline 3;
s2, introducing water into the third pipeline 5 to spray and wash the tail gas in the second pipeline 3, solidifying sulfur carried in the tail gas under the washing action, entering a chilling tank 7 to cool, settle and separate, discharging the tail gas from the top of the chilling tank 7, entering a washing tower 9 through a fourth pipeline 6 to spray and wash, and overflowing settled upper-layer water in the chilling tank 7 to enter the bottom in the washing tower 9 as spraying water;
and S3, discharging the tail gas washed by the washing tower 9 from the top of the tower, reheating the tail gas in a medium-pressure waste boiler, feeding the reheated tail gas into a tail gas pipeline, and finally feeding the reheated tail gas into a boiler for secondary desulfurization.
According to the process, the content of sulfur carried in the tail gas is reduced, the resistance formed by solidification of sulfur in a tail gas pipeline is reduced, the load of a sulfur recovery device is increased, the yield of sulfur is increased by about 6 tons every day, 99 ten thousand yuan is created for each year, the load of boiler flue gas desulfurization is reduced, the amount of boiler limestone is reduced, and the annual effect is up to 200 ten thousand yuan. The safe and stable operation of the sulfur recovery device is ensured.
Although the present invention has been described in detail by referring to the drawings in connection with the preferred embodiments, the present invention is not limited thereto. Various equivalent modifications or substitutions can be made on the embodiments of the present invention by those skilled in the art without departing from the spirit and scope of the present invention, and these modifications or substitutions are within the scope of the present invention/any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention.
Claims (8)
1. The utility model provides a get rid of device of smuggling sulphur secretly in claus sulphur recovery tail gas, a serial communication port, including sulphur separator, quench jar, scrubbing tower, the sulphur separator is equipped with the first pipeline that can leading-in tail gas, and the top of sulphur separator top is passed through the top of second pipe connection quench jar, is equipped with the third pipeline of connecting the water supply pipe on the second pipeline, and the air inlet of fourth pipe connection scrubbing tower is passed through at quench jar top, and scrubbing tower top gas outlet passes through the waste pot air inlet of pipe connection middling pressure.
2. The apparatus for removing sulfur carried in Claus sulfur recovery tail gas as claimed in claim 1, wherein an overflow port is further provided in the middle upper part of the outer side surface of the quench tank, and the overflow port is communicated with the bottom in the scrubber via a fifth pipeline.
3. The apparatus for removing sulfur entrained in the Claus sulfur recovery tail gas as claimed in claim 1, wherein the scrubber is provided with a spray water circulation mechanism, the spray water circulation mechanism comprises a precipitation tank, a circulation pump and a water cooler, the bottom of the scrubber is connected with the inlet of the precipitation tank through a sixth pipeline, the outlet of the precipitation tank is connected with the inlet of the circulation pump through a seventh pipeline, the outlet of the circulation pump is connected with the inlet of the water cooler through an eighth pipeline, and the outlet of the water cooler is connected with the spray head in the scrubber through a ninth pipeline.
4. The apparatus for removing sulfur entrained in a Claus sulfur recovery tail gas as claimed in claim 3, wherein a tenth line for replenishing water is provided at the top of the precipitation tank.
5. The apparatus for removing sulfur carried in Claus sulfur recovery tail gas as claimed in claim 1, wherein the pipeline connecting the washing tower and the medium pressure waste boiler is provided with a water seal, the gas outlet at the top of the washing tower is connected with the gas inlet of the water seal through an eleventh pipeline, and the gas outlet at the top of the water seal is connected with the gas inlet of the medium pressure waste boiler through a twelfth pipeline.
6. The apparatus for removing sulfur carried in a Claus sulfur recovery tail gas as in claim 3, wherein the eighth line is provided with a waste water discharge pipe in T-shaped communication therewith.
7. A process for removing entrained sulfur from a claus sulfur recovery tail gas using the apparatus of claim 1, comprising the steps of:
s1, leading tail gas in a tail gas pipeline into a sulfur separator through a first pipeline for sulfur separation, enabling the separated sulfur to enter a liquid sulfur pool from the bottom of the sulfur separator, discharging the tail gas from the top of the sulfur separator, and leading the tail gas into a chilling tank through a second pipeline;
s2, water is introduced into the third pipeline to spray and wash the tail gas in the second pipeline, sulfur carried in the tail gas is solidified under the washing action and enters the chilling tank for cooling, settling and separating, and the tail gas is discharged from the top of the chilling tank and enters a washing tower through the fourth pipeline for spray washing;
and S3, discharging the tail gas washed by the washing tower from the top of the tower, re-heating the tail gas in a medium-pressure waste boiler, and then feeding the tail gas into a tail gas pipeline again.
8. The method of claim 7, wherein in step S2, the upper settled layer water in the quench tank overflows into the bottom of the scrubber tank as spray water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210795399.1A CN115382333A (en) | 2022-07-07 | 2022-07-07 | Device and method for removing sulfur entrained in Claus sulfur recovery tail gas |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210795399.1A CN115382333A (en) | 2022-07-07 | 2022-07-07 | Device and method for removing sulfur entrained in Claus sulfur recovery tail gas |
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| CN115382333A true CN115382333A (en) | 2022-11-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210795399.1A Pending CN115382333A (en) | 2022-07-07 | 2022-07-07 | Device and method for removing sulfur entrained in Claus sulfur recovery tail gas |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116409756A (en) * | 2023-02-15 | 2023-07-11 | 广州赫尔普化工有限公司 | Water washing purification method for sulfur steam |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206121494U (en) * | 2016-09-05 | 2017-04-26 | 兖矿国宏化工有限责任公司 | Sulfur recovery tail gas physics washing desulphurization unit |
| CN206924611U (en) * | 2017-07-19 | 2018-01-26 | 内蒙古易高煤化科技有限公司 | A kind of sulfur-containing tail gas processing system |
| CN209652260U (en) * | 2018-11-29 | 2019-11-19 | 中国石油天然气股份有限公司西南油气田分公司重庆天然气净化总厂 | A kind of Crouse's sulphur recovery and exhaust treatment system |
| CN211159192U (en) * | 2019-11-18 | 2020-08-04 | 蒲城清洁能源化工有限责任公司 | Processing apparatus of acid water is retrieved to claus sulphur |
-
2022
- 2022-07-07 CN CN202210795399.1A patent/CN115382333A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206121494U (en) * | 2016-09-05 | 2017-04-26 | 兖矿国宏化工有限责任公司 | Sulfur recovery tail gas physics washing desulphurization unit |
| CN206924611U (en) * | 2017-07-19 | 2018-01-26 | 内蒙古易高煤化科技有限公司 | A kind of sulfur-containing tail gas processing system |
| CN209652260U (en) * | 2018-11-29 | 2019-11-19 | 中国石油天然气股份有限公司西南油气田分公司重庆天然气净化总厂 | A kind of Crouse's sulphur recovery and exhaust treatment system |
| CN211159192U (en) * | 2019-11-18 | 2020-08-04 | 蒲城清洁能源化工有限责任公司 | Processing apparatus of acid water is retrieved to claus sulphur |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116409756A (en) * | 2023-02-15 | 2023-07-11 | 广州赫尔普化工有限公司 | Water washing purification method for sulfur steam |
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Application publication date: 20221125 |