CN205886555U - System for sulfurous gas desulfurization - Google Patents
System for sulfurous gas desulfurization Download PDFInfo
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- CN205886555U CN205886555U CN201620789296.4U CN201620789296U CN205886555U CN 205886555 U CN205886555 U CN 205886555U CN 201620789296 U CN201620789296 U CN 201620789296U CN 205886555 U CN205886555 U CN 205886555U
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Abstract
The utility model discloses a system for sulfurous gas desulfurization, include raw materials and carbide heating furnace air heat exchanger, thick processed gas and carbide heating furnace air heat exchanger, hydrolysis back gas and carbide heating furnace air heat exchanger, thick desulfurizing tower, the tower of hydrolysising, two parallelly connected smart desulfurizing tower, air pumps. Feed gas after the compression is cooled down to 30~35 DEG C through the heat exchanger, and the air mixing who comes with the air pump gets into thick desulfurizing tower, thick desorption hydrogen sulfide and desorption part R carries out SH and thiophene, gaseous process heat exchanger after the thick desulfurization heaies up to 110~125 DEG C of hydrolyzes, hydrolysises most COS and CS2 into H2S, is gaseous process heat exchanger after hydrolysising cooled down to 20 once more ~25 DEG C, carry out the H2S desorption, the whole desorptions of H2S that will hydrolysis and produce to and the remaining R of further desorption SH and thiophene. Small investment, convenient operation, desulfurization effect are good, are applicable to the gas that refinery gas, the natural gas, coal system gas and biochemical process produced. The utility model discloses a total sulfur content reached below the 0.1ppm during desulfurization effect can make gas, satisfied the requirement of follow -up technology totally.
Description
Technical field
This utility model is related to a kind of Coal Chemical Industry, petrochemical industry and environmental protection technology, more particularly, to a kind of sour gas
The system of body desulfurization.
Background technology
The gas that refinery gas, natural gas, coal gas and biochemical process produce is all containing a certain amount of hydrogen sulfide and organic
Sulfide etc..For avoiding the catalyst poisoning of system equipment corrosion and subsequent production process, it is to avoid outer pollution discharging environment all needs
Want desulfurization.
Desulfurization technology is generally divided into two methods of dry desulfurization and wet desulphurization, wet desulphurization long flow path, equipment at present
Check, once invests compared with high it is adaptable to treating capacity is big, do not comprise the desulfurization of the gases such as light oil.Dry desulfurization flow process is simple, equipment
Few, small investment, to be applied to middle and small scale treating capacity, sulfur content be not extra-high gas sweetening.
With coal pyrolysis gas, calcium carbide stove exhaust for raw material production natural gas project when, the required desulfurization of unstripped gas, to ensure
The requirement of follow-up methanation catalyst, first order hydrodesulfurization-middle temperature ferrum oxide desulfurization-secondary hydrogenation commonly used at present takes off
Sulfur-zinc oxide desulfurization technology, technique is more complicated, and investment is higher.
Utility model content
The sulfurous gas desulfurization that the purpose of this utility model is a kind of small investment of offer, easy to operate, desulfurized effect is good
System.
The purpose of this utility model is achieved through the following technical solutions:
The system of sulfurous gas desulfurization of the present utility model, including raw material and carbide heating furnace air heat exchanger, thick desulfurization
Gas and carbide heating furnace air heat exchanger after gas and carbide heating furnace air heat exchanger, hydrolysis, thick desulfurizing tower, hydrolysis tower,
Two fine de-sulfur towers in parallel, air pumps；
The bottom of described thick desulfurizing tower is provided with raw material gas inlet pipeline, the outlet at top of described thick desulfurizing tower and described water
The import of the bottom of Xie Ta connects, and the outlet of described hydrolysis top of tower is connected with the import at described fine de-sulfur tower top, described essence
The bottom of desulfurizing tower is provided with clean gas outlet pipeline, sets between the top inlet pipeline of described fine de-sulfur tower and outlet at bottom pipeline
There is connecting line；
Described raw material and carbide heating furnace air heat exchanger on described raw material gas inlet pipeline, described thick processed gas
And carbide heating furnace air heat exchanger is on the connecting line between described thick desulfurizing tower and described hydrolysis tower, after described hydrolysis
On the gas and carbide heating furnace air heat exchanger connecting line between described hydrolysis tower and described fine de-sulfur tower；
The export pipeline of described air pump and the bottom inlet pipeline of described thick desulfurizing tower and the top of described fine de-sulfur tower
Inlet ductwork connects respectively.
The sulfurous gas of this utility model embodiment offer is provided by the technical scheme that above-mentioned this utility model provides
The system of desulfurization.Small investment, easy to operate, desulfurized effect good it is adaptable to refinery gas, natural gas, coal gas and biochemical process
The gas producing.Desulfurized effect of the present utility model can make total sulfur content in gas reach below 0.1ppm, after fully meeting
The requirement of continuous technique.
Brief description
The structural representation of the system of the sulfurous gas desulfurization that Fig. 1 provides for this utility model embodiment.
In figure:
e1For raw material and carbide heating furnace air heat exchanger, e2For thick processed gas and carbide heating furnace air heat exchanger, e3
For gas after hydrolysis and carbide heating furnace air heat exchanger；
t1For thick desulfurizing tower, t2For hydrolysis tower, t3And t4For fine de-sulfur tower；
p1For air pump (centrifugal pump).
Specific embodiment
This utility model embodiment will be described in further detail below.
The system of sulfurous gas desulfurization of the present utility model, its preferably specific embodiment is:
Including raw material and carbide heating furnace air heat exchanger, thick processed gas and carbide heating furnace air heat exchanger, hydrolysis
Gas and carbide heating furnace air heat exchanger, thick desulfurizing tower, hydrolysis tower, two fine de-sulfur towers in parallel, air pumps afterwards；
The bottom of described thick desulfurizing tower is provided with raw material gas inlet pipeline, the outlet at top of described thick desulfurizing tower and described water
The import of the bottom of Xie Ta connects, and the outlet of described hydrolysis top of tower is connected with the import at described fine de-sulfur tower top, described essence
The bottom of desulfurizing tower is provided with clean gas outlet pipeline, sets between the top inlet pipeline of described fine de-sulfur tower and outlet at bottom pipeline
There is connecting line；
Described raw material and carbide heating furnace air heat exchanger on described raw material gas inlet pipeline, described thick processed gas
And carbide heating furnace air heat exchanger is on the connecting line between described thick desulfurizing tower and described hydrolysis tower, after described hydrolysis
On the gas and carbide heating furnace air heat exchanger connecting line between described hydrolysis tower and described fine de-sulfur tower；
The export pipeline of described air pump and the bottom inlet pipeline of described thick desulfurizing tower and the top of described fine de-sulfur tower
Inlet ductwork connects respectively.
Described raw material and carbide heating furnace air heat exchanger, thick processed gas and carbide heating furnace air heat exchanger and hydrolysis
Gas and carbide heating furnace air heat exchanger are fin tube type gas heat exchanger afterwards.
The method that the system of sulfurous gas desulfurization of the present utility model realizes sulfurous gas desulfurization, including step:
A, unstripped gas after compression change with entering furnace of calcium carbide air through described raw material and carbide heating furnace air heat exchanger
Heat is cooled to 30～35 DEG C, and the air coming with described air pump is mixed into thick desulfurizing tower, is by slightly removing sulfuration at this
Hydrogen and removing part r-sh and thiophene；
Gas after b, thick desulfurization changes with entering furnace of calcium carbide air through thick processed gas and carbide heating furnace air heat exchanger
Heat is warming up to 110～125 DEG C and is hydrolyzed, by most of cos and cs2It is hydrolyzed to h2s；
Gas after c, hydrolysis gas and carbide heating furnace air heat exchanger after hydrolysis are cooled to 20-～25 again
DEG C, carry out h2S removes, the h that hydrolysis is produced2S all removes, and removes remaining r-sh and thiophene further.
In described step a, using the flow process of bottom in and top out, it is used for having avoided aqueous water to enter desulfurizing agent bed；
In described step c, it is used for ensureing clean-up effect and service life in the form of double tower series-parallel operation, passes through this
The remaining sulfide of technical process all removes, and reaches final purification requirement total sulfur content and is less than 0.1ppm.
The system of sulfurous gas desulfurization of the present utility model, small investment, easy to operate, desulfurized effect good it is adaptable to refinery
The gas that gas, natural gas, coal gas and biochemical process produce.
This utility model is using " sulfide removal hydrolyzes loss of essence h2The flow process of s " carries out desulfurizing and purifying:
1st, pre- removing sulfide unit: carry out h using 3018 high sulfur capacity dry-desulphurizers2The removing of s, can remove simultaneously
Part r-sh and thiophene.
2nd, hydrolysis unit: using ordinary-temp hydrolysis agent by most of cos, cs2Hydrolysis becomes h2s.
3rd, deep removing h2S unit: adopt 3018 high sulfur capacity dry-desulphurizers again, in the form of double tower series-parallel operation,
Remaining sulfide is all removed by here, reaches final purification requirement.
4th, oxygen is the essential condition of 3018 desulfurizing agent sweetening processes, o2/h2S stoichiometric proportion is more than 2-2.5, can reach
Best desulfurized effect.
3018 dry-desulphurizers are a kind of catalytic oxidation desulfurization agent, and its operation principle is:
h2s+o2→h2o+s
Innovative point of the present utility model and advantage:
1st, the sulfur removal technology of domestic coal pyrolysis gas and refinery gas is all more complicated, is taken off using hydrodesulfurization-ferrum oxide
The modes such as sulfur-zinc oxide desulfurization, and this utility model process is simple, domestic not yet have any one to come to coal heat using this technique
Vent one's spleen, calcium carbide stove exhaust, refinery gas etc. carry out desulfurization, therefore this project new technology, original.
2nd, product sulfur is stored in the hole of desulfurizing agent carrier, h2O then with gas in h2O mutually balances, initial reaction stage
It is partially left on desulfurizing agent, partly discharges with gas, all discharge with gas after reaction balance.
3rd, the stable element s of abjection is stored in the activated carbon hole of desulfurizing agent it is not necessary to secondary desulfuration, does not produce secondary dirt
Dye.
4th, sweetening process does not need additional other chemicals, and technical process is simple, and energy consumption is very low.
5th, desulphurization plant is few, and investment is low.
6th, fine de-sulfur tower adopts connection in series-parallel, and when changing desulfurizing agent to meet one tower of desulfurized effect, another tower is permissible
Work on；Can also tandem working with parallel operation in order to meet desulfurized effect.
Specific embodiment:
As shown in figure 1, needing four towers and three heat exchangers and oxygen pump one.
1st, unstripped gas is coal pyrolysis gas and calcium carbide stove exhaust:
Composition:
| Component | Composition (mol%) | Component | Composition (mol%) |
| co | 46.5999 | h2 | 28.6363 |
| co2 | 4.0351 | ch4 | 12.1908 |
| n2 | 2.0262 | o2 | 0.4000 |
| h2o | 0.0579 | c2h6 | 4.2616 |
| c3h8 | 0.4954 | c6h6 | 2000mg/nm3 |
| c4h10 | 0.3570 | nh3 | 50mg/nm3 |
| Tar | 0.4025mg/nm3 | h2s | 30mg/nm3 |
| Organic sulfur | 200mg/nm3 |
2nd, gas sulfur compound (in terms of sulfur):
| h2s | cos | cs2 | r-sh | Thiophene |
| 20mg/nm3 | 52mg/nm3 | 16mg/nm3 | 4mg/nm3 | 8mg/nm3 |
3rd, raw gas flow, temperature, pressure:
Flow: 36800nm3/h
Pressure: 4.00mpa
Temperature :～50 DEG C
4th, catalytic amount:
5th, purify and require:
Total sulfur content≤0.1ppm after purification
6th, technological process:
1) unstripped gas after compression and the furnace of calcium carbide air heat-exchange that enters of e2 are cooled to 30～35 DEG C, the sky coming with air pump
Gas is mixed into thick desulfurizing tower, using the flow process of bottom in and top out, to have avoided aqueous water to enter desulfurizing agent bed.Here be into
Row is thick to remove hydrogen sulfide and removing part r-sh and thiophene.
2) the furnace of calcium carbide air heat-exchange that enters of the gas after thick desulfurization and e1 is warming up to 110～125 DEG C and is hydrolyzed, by big portion
Divide cos and cs2It is hydrolyzed to h2s.
3) gas after hydrolyzing and e3 are cooled to 20-～25 DEG C again, carry out h2S removes, and here is to ensure clean-up effect
And service life, in the form of double tower series-parallel operation, by the h of hydrolysis generation2S all removes, and removes remaining further
Under r-sh and thiophene.All remove through the remaining sulfide of this technical process, reach final purification requirement total sulfur content little
In 0.1ppm
7th, in being embodied as:
1) unstripped gas sulfide content be with oven gas, calcium carbide furnace gas and and coal pyrolysis gas mixing after content approximation
Sulfide content, the sulfide of each family all can have certain fluctuation, but the change of sulfide content do not interfere with cleaned
Journey and precision, simply affect the usage cycles of desulfurizing agent.Therefore, this utility model is applied to refinery gas, associated gas, coal
Gas, the desulfurization of natural gas ... gas.
2) 3018 modified activated carbon sorbents can be changed when fine de-sulfur tower desulfurized effect does not reach and requires, can have
Preferably desulfurized effect.
The above, only this utility model preferably specific embodiment, the multiple stage set deriving from this utility model
The system of connection in series-parallel desulfurizing tower desulfurization should be all in the interest field of this project.But protection domain of the present utility model is not
It is confined to this, any those familiar with the art, in the technical scope that this utility model discloses, can readily occur in
Change or replacement, all should cover within protection domain of the present utility model.
Claims (2)
1. a kind of system of sulfurous gas desulfurization is it is characterised in that include raw material and carbide heating furnace air heat exchanger, thick desulfurization
Gas and carbide heating furnace air heat exchanger after gas and carbide heating furnace air heat exchanger, hydrolysis, thick desulfurizing tower, hydrolysis tower,
Two fine de-sulfur towers in parallel, air pumps；
The bottom of described thick desulfurizing tower is provided with raw material gas inlet pipeline, the outlet at top of described thick desulfurizing tower and described hydrolysis tower
Bottom import connect, described hydrolysis top of tower outlet be connected with the import at described fine de-sulfur tower top, described fine de-sulfur
The bottom of tower is provided with clean gas outlet pipeline, the company of being provided between the top inlet pipeline of described fine de-sulfur tower and outlet at bottom pipeline
Adapter road；
Described raw material and carbide heating furnace air heat exchanger on described raw material gas inlet pipeline, described thick processed gas and electricity
Stone heating furnace air heat exchanger on the connecting line between described thick desulfurizing tower and described hydrolysis tower, described hydrolysis after gas
And on connecting line between described hydrolysis tower and described fine de-sulfur tower for the carbide heating furnace air heat exchanger；
The export pipeline of described air pump and the bottom inlet pipeline of described thick desulfurizing tower and the top inlet of described fine de-sulfur tower
Pipeline connects respectively.
2. the system of sulfurous gas desulfurization according to claim 1 is it is characterised in that described raw material is empty with carbide heating furnace
After gas heat exchanger, thick processed gas and carbide heating furnace air heat exchanger and hydrolysis, gas and carbide heating furnace air heat exchanger are equal
For fin tube type gas heat exchanger.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620789296.4U CN205886555U (en) | 2016-07-25 | 2016-07-25 | System for sulfurous gas desulfurization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620789296.4U CN205886555U (en) | 2016-07-25 | 2016-07-25 | System for sulfurous gas desulfurization |
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| CN205886555U true CN205886555U (en) | 2017-01-18 |
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ID=57784697
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106039954A (en) * | 2016-07-25 | 2016-10-26 | 北京华福工程有限公司 | System and method for sulfurous gas desulfurization |
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- 2016-07-25 CN CN201620789296.4U patent/CN205886555U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106039954A (en) * | 2016-07-25 | 2016-10-26 | 北京华福工程有限公司 | System and method for sulfurous gas desulfurization |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20201216 Granted publication date: 20170118 |
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| PP01 | Preservation of patent right |