CN109809368A - A kind of oxygen-enriched combustion system and technique of the sulphur recovery for coal chemical industry - Google Patents
A kind of oxygen-enriched combustion system and technique of the sulphur recovery for coal chemical industry Download PDFInfo
- Publication number
- CN109809368A CN109809368A CN201910246867.8A CN201910246867A CN109809368A CN 109809368 A CN109809368 A CN 109809368A CN 201910246867 A CN201910246867 A CN 201910246867A CN 109809368 A CN109809368 A CN 109809368A
- Authority
- CN
- China
- Prior art keywords
- oxygen
- burner
- enriched
- chemical industry
- burning
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
Abstract
The invention discloses the oxygen-enriched combustion systems and technique of a kind of sulphur recovery for coal chemical industry, system includes sequentially connected burner, main burning furnace and waste heat boiler, the burner is connect with the outlet of oxygen-enriched air preheater, the import of the oxygen-enriched air preheater is connect with oxygen, air line respectively, the burner is connect with acid gas pipeline, and the burner is connect with Iganition control system.The present invention passes through oxygen-enriched high temperature incineration to the raw material sour gas containing ammonia for entering sulfur recovery system, is converted into nitrogen, NH3Residual concentration is less than 1mg/Nm3, meet subsequent technique requirement；It burns and generates nitrogen oxides less than 100mg/Nm3, meet technique requirement, while the flue gas emission control for also complying with environmental protection protection requires, remaining H2S is less than 5mg/Nm3, reach the requirement of subsequent sulfur recovery technology.The present invention uses oxygen enriching process, incineration flue gas amount can be effectively reduced, to effectively reduce technique tolerance.
Description
Technical field
The present invention relates to coal chemical technology, specially the oxygen-enriched combustion system of the sulphur recovery in coal chemical industry sulfur removal technology and
Technique.
Background technique
The energy resource structure in China is more coals, oil-poor, few gas situation, and petroleum resources are deficient, rich coal resources.But contain in coal
The sulfide of various concentration is measured, coal resources in China overall average sulphur content is 0.9%.It is increasingly tight with China's atmospheric environment protection
Lattice control sulfur dioxide (SO2) concentration of emission main path be improve sulphur the rate of recovery.For opening for coal resources in China
Hair and utilization, especially in Modern Coal-based Chemical technical process, sweetening process becomes an essential technical process.Thus band
The processing of the sulfur-containing tail gas come also becomes the important environment conveyance system that Modern Coal-based Chemical high-efficiency cleaning utilizes.In coalification
Main desulfurization means are using claus process recycling sulphur and flue gas desulfurization processing in work.
It is sulfide hydrogen (H to the cleaning procedure of sulfur-bearing raw gas during coal chemical industry2S) the main source of acid gas removes this
Except, phenol recovery ammonia, proposes the processes such as ammonia also and can generate containing ammonia (NH gas liquor separation3)、H2The sour gas of the components such as S.
In the present invention, it is related to being the burning segment process in Crouse's recovery technology of sulfur.Coal chemical industry enters sulphur
H in the raw material sour gas of recyclable device2S concentration also contains NH generally in 20%~30% range3, olefines, hydrogen cyanide
(HCN), carbonyl sulfur (COS), methanol (CH3) etc. OH impurity not only need combustible gas is complete in the main incineration section of claus process
Sulfide in sour gas, is converted into SO by full burning2, it is also necessary to nitrogenous compound is converted into nitrogen, thus after reaching work
The purpose of continuous technique recycling sulphur and abjection ammonia.
With the continuous development of recovery technology of sulfur, from selective oxidation method, conventional Claus technique, super Claus work
Skill, rich oxygen Claus process gradually develop, and promote sulfur recovery rate.In order to further enhance sulfur recovery rate, in claus process
It needs to solve the effect of acid gas burning, guarantees how to handle low H2Under S concentration acid gas operating condition, main burning furnace of sulfur recovery unit
The problem of higher temperature (being greater than 1250 DEG C), can which influences sulfur recovery facility decompose ammonia completely, guarantee downstream
Device even running, using technologies such as the oxygen-enriched high-temperature position smooth combustion technology of main burning furnace and acid gas preheating, dividing technologies.
Under the conditions of oxygen-enriched combusting, ignition temperature is higher than air burning temperature, according to NO formation mechanism, in height
In 1300 DEG C, mainly thermal NO is generated, and the generation for how controlling oxygen-enriched combusting nitrogen oxides mentions oxygen-enriched combusting
Go out that more stringent requirements are proposed.In common burner, second-time burning is mostly used to reduce the generation of nitrogen oxides.In addition it fires
Swirl flow combustion technology, flow type pump with injection combustion technology also can be used in burner, to increase burning turbulivity, strengthen mixed process, is conducive to
Reduce burner temperature.
Summary of the invention
The shortcomings that in order to overcome the prior art, the present invention provides a kind of oxygen-enriched combustings of sulphur recovery for coal chemical industry
System and technique, it is intended to solve the steady completely burned for needing to solve in the burning of rich oxygen Claus process high temperature position, guarantee de-
The technical issues of ammonia, control NO_x formation, to adapt to the burning process of various concentration oxygen enriching process.
The technical scheme adopted by the invention is that: a kind of oxygen-enriched combustion system of the sulphur recovery for coal chemical industry, including
Sequentially connected burner, main burning furnace and waste heat boiler, the burner is connect with the outlet of oxygen-enriched air preheater, described
The import of oxygen-enriched air preheater is connect with oxygen, air line respectively, and the burner is connect with acid gas pipeline, the combustion
Burner is connect with Iganition control system.
The present invention also provides a kind of oxygen-enriched burning process of sulphur recovery for coal chemical industry, air and oxygen mix shape
At oxygen-enriched air, enter in burner after oxygen-enriched air preheater is preheated to 150~200 DEG C；Sour gas is by oxygen-enriched/pure
Enter in main burning furnace after oxygen burning；Wherein: when oxygen concentration is in 21%~55% range, sour gas and oxygen are from burner
Spray gun enter in burner, air enters in burner from burner shell；When oxygen concentration is in 55%~100% range
When, sour gas enters combustion chamber from the gas service pipes of burner shell or main burning furnace and burns, oxygen and air from
The main jet rifle of burner enters, and is mixed and burned in main burning furnace with sour gas；Process Gas after burning stops in main burning furnace
It stays and enters subsequent processing after entering waste heat boiler recycling heat after 1~1.2S.
Compared with prior art, the positive effect of the present invention is:
The present invention is to the H in the raw material sour gas for the separate sources for entering sulfur recovery system2S sulfides are by sufficiently burning
It burns, generates SO2, remaining H2S is less than 5mg/Nm3, utmostly reduce subsequent sulfur recovery technology absorption-regeneration unit SO2It absorbs
The degradation and loss of agent reduce, and reduce and may impact to catalyst in sulfur recovery subsequent technique, or bring equipment product
The problems such as carbon, blocking.
The present invention passes through oxygen-enriched high temperature incineration to the raw material sour gas containing ammonia for entering sulfur recovery system, is converted into nitrogen,
NH3Residual concentration is less than 1mg/Nm3, meet subsequent technique requirement；It burns and generates nitrogen oxides less than 100mg/Nm3, meet technique
It is required that while also complying with the flue gas emission control requirement that environmental protection is protected, remaining H2S is less than 5mg/Nm3, reach subsequent sulfur recovery
The requirement of technique.
Using oxygen enriching process, incineration flue gas amount can be effectively reduced, to effectively reduce technique tolerance, effectively reduces master
The size of equipment is wanted, design difficulty and fixed investment are reduced.
Detailed description of the invention
Examples of the present invention will be described by way of reference to the accompanying drawings, in which:
Fig. 1 is process flow chart of the invention.
Specific embodiment
A kind of oxygen-enriched combustion system of the sulphur recovery for coal chemical industry, as shown in Figure 1, comprising: burner 1, point fire control
System 2 processed, main burning furnace 3, waste heat boiler 4, blower 5, oxygen-enriched air preheater 6, air filter 7 etc., in which:
Burner 1 is connect with main burning furnace 3, and main burning furnace 3 is connected with waste heat boiler 4, waste heat boiler removal process gas heat
After amount, Process Gas enters subsequent processing.
Iganition control system 2 includes burning torch and on-site control, and the burning torch is connect with burner 1, provides device
Ignition function.
Main burning furnace 3 is high-temperature combustion equipment, liner fire resisting and insulated lining, and long-term operating temperature is at 1350 DEG C or more.
The invention also discloses a kind of oxygen-enriched burning process of sulphur recovery for coal chemical industry, include the following steps:
Air needed for blower 5 provides burning, is mixed in a certain ratio to form oxygen-enriched air with oxygen, by oxygen-enriched air
Preheater 6 enters burner 1 after preheating.Air filter 7 is set at the air intake of blower 5.
Acid gas, gas containing propylhomoserin can pass through oxygen by entering burner 1, oxygen-enriched air concentration after oxygen-enriched/pure oxygen burning
Amount/air capacity proportion is adjusted.
As acid gas H2When S concentration is 30~40%V, it is low to will lead to 3 temperature of main burning furnace, can not carry out effective high temperature gram
Louth reaction.At this moment take improve oxygen-enriched air in oxygen concentration to 30%V or more be even up to pure oxygen (100%V), to ensure
Main burning furnace temperature.
The present invention has reserved oxygen-enriched air preheater function in technique, and oxygen-enriched air is preheated to 150~200 DEG C of temperature
Degree achievees the purpose that improve 3 temperature of main burning furnace, it is ensured that the progress of pyroreaction improves the sulfur recovery rate of device.
In addition in technology controlling and process, control main burning furnace temperature is very crucial, and traditional technique is increase fuel gas, but its
Consumption certainly will be will cause to improve, be unable to reach energy-saving purpose.
This technique is using air mass flow metering, oxygen flow metering, by being mixed to form certain density oxygen-enriched air.
As acid gas (H2S when) component reduces, 3 temperature of main burning furnace can be reduced accordingly, at this time using raising oxygen-enriched air
Oxygen concentration achievees the purpose that improve main burning furnace temperature.By automatically analyzing for acid gas component, reach main burning furnace temperature control
Purpose.
When in acid gas component contain component ammonia (NH3) when, it is desirable that the temperature of main burning furnace 3 at 1250 DEG C~1300 DEG C, when
When 3 fire box temperature of main burning furnace is lower than 1250 DEG C, oxygen-enriched air is improved by way of increasing oxygen flow/reduction air mass flow
The mode of concentration (even up to pure oxygen), which reaches, improves 3 temperature of main burning furnace.
Process Gas after main burning furnace burning stops 1~1.2S in main burning furnace 3 to carry out high temperature claus reaction.
The method have the characteristics that the automatically analyzing of oxygen-enriched air concentration, acid gas H2S concentration, flow are automatically analyzed, are led
The mode of furnace temperature automatic measurement reaches automatic control optimal reaction temperature by certain control means, improves device
The purpose of sulfur recovery rate.
In addition for different acid gas components, different main burning furnace temperature is controlled, it is maximum while improving sulfur recovery rate
Limit it is energy-saving.
The working principle of the invention is: process control process of the invention, according to the ingredient in sour gas, controls oxygen-enriched dense
The proportion of degree and sour gas；Selection is entered by burner on sour gas, air, oxygen intake method, incinerator section enters
Equal different locations mode of entrance, effect are to control the temperature of burning and make reducing to the greatest extent for the undesirable element in combustion process.
According to oxygen concentration difference, it is divided into two kinds of air inlet techniques；When oxygen concentration control in 21%~55% range, acid
Property gas and oxygen enter in burner from the spray gun of burner, and air enters in burner from 1 shell of burner.Work as oxygen concentration
When 55%~100% range, sour gas enters combustion chamber from burner shell or incinerator gas service pipes and burns, oxygen
Gas and air enter from the main jet rifle of burner, are mixed and burned in incinerator with sour gas.
In burner and incinerator, considers residence time when high temperature incineration, guarantee the completely burned of sour gas, simultaneously
Controlling the residence time cannot be too long, and Optimal Control 1.5~2.5 seconds.Residence time control was burned in 3 seconds in high-temperature region, avoided height
The excessive thermal NO of warm area residence time too long generation.The especially temperature stop that is more than 1300 DEG C of flame region
The control of time.
For the sour gas containing ammonia, oxygen-enriched combusting temperature is needed through gas mixing ratio, control ignition temperature 1250 DEG C~
1400 DEG C, and guarantee high-temperature residence time 1.5 seconds, Optimal Control temperature range is at 1250 DEG C~1300 DEG C.
Claims (10)
1. a kind of oxygen-enriched combustion system of the sulphur recovery for coal chemical industry, it is characterised in that: including sequentially connected burner,
Main burning furnace and waste heat boiler, the burner are connect with the outlet of oxygen-enriched air preheater, the oxygen-enriched air preheater
Import is connect with oxygen, air line respectively, and the burner is connect with acid gas pipeline, the burner and ignition control system
System connection.
2. a kind of oxygen-enriched combustion system of sulphur recovery for coal chemical industry according to claim 1, it is characterised in that:
Blower is set on air line.
3. a kind of oxygen-enriched combustion system of sulphur recovery for coal chemical industry according to claim 2, it is characterised in that:
Air filter is set at the air intake of blower.
4. a kind of oxygen-enriched combustion system of sulphur recovery for coal chemical industry according to claim 1, it is characterised in that: institute
Stating Iganition control system includes burning torch and on-site control, and the burning torch is connect with burner.
5. a kind of oxygen-enriched combustion system of sulphur recovery for coal chemical industry according to claim 1, it is characterised in that:
Setting refractory lining and insulated lining in the main burning furnace.
6. a kind of oxygen-enriched burning process of the sulphur recovery for coal chemical industry, it is characterised in that: air and oxygen mix form richness
Oxygen air enters in burner after oxygen-enriched air preheater is preheated to 150~200 DEG C；Sour gas is by oxygen-enriched/pure oxygen combustion
Enter in main burning furnace after burning；Wherein: when oxygen concentration is in 21%~55% range, the spray of sour gas and oxygen from burner
Rifle enters in burner, and air enters in burner from burner shell；When oxygen concentration is in 55%~100% range, acid
Property gas enters combustion chamber from the gas service pipes of burner shell or main burning furnace and burns, and oxygen and air are from burner
Main jet rifle enter, in main burning furnace with sour gas be mixed and burned；Process Gas after burning stops 1 in main burning furnace~
Enter subsequent processing after entering waste heat boiler recycling heat after 1.2S.
7. a kind of oxygen-enriched burning process of sulphur recovery for coal chemical industry according to claim 6, it is characterised in that: when
Acid gas H2When S concentration is 30~40%V, the oxygen concentration in oxygen-enriched air is improved to 30%V or more and is even up to 100%V.
8. a kind of oxygen-enriched burning process of sulphur recovery for coal chemical industry according to claim 6, it is characterised in that:
The burning residence time in burner and main burning furnace is 1.5~2.5 seconds.
9. a kind of oxygen-enriched burning process of sulphur recovery for coal chemical industry according to claim 6, it is characterised in that: temperature
The burning residence time in high-temperature region more than 1300 DEG C is spent no more than 3 seconds.
10. a kind of oxygen-enriched burning process of sulphur recovery for coal chemical industry according to claim 6, it is characterised in that:
For the sour gas containing ammonia, adjusted by gas mixing ratio, by the control of oxygen-enriched combusting temperature within the scope of 1250 DEG C~1400 DEG C, and
Guarantee that high-temperature residence time is 1.5 seconds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910246867.8A CN109809368A (en) | 2019-03-29 | 2019-03-29 | A kind of oxygen-enriched combustion system and technique of the sulphur recovery for coal chemical industry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910246867.8A CN109809368A (en) | 2019-03-29 | 2019-03-29 | A kind of oxygen-enriched combustion system and technique of the sulphur recovery for coal chemical industry |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109809368A true CN109809368A (en) | 2019-05-28 |
Family
ID=66610960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910246867.8A Pending CN109809368A (en) | 2019-03-29 | 2019-03-29 | A kind of oxygen-enriched combustion system and technique of the sulphur recovery for coal chemical industry |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109809368A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110953597A (en) * | 2019-11-21 | 2020-04-03 | 浙江浙能技术研究院有限公司 | High-sulfur waste gas rich combustion device and energy utilization method |
| CN113264508A (en) * | 2020-02-17 | 2021-08-17 | 中国石油天然气集团有限公司 | Sulfur recovery method and device |
| CN114132900A (en) * | 2021-12-07 | 2022-03-04 | 北京航化节能环保技术有限公司 | Sulfur recovery device switched by oxygen-enriched/air method in coking industry |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101193690A (en) * | 2005-04-06 | 2008-06-04 | 英国氧气集团有限公司 | Treatment of fuel gas |
| CN102371108A (en) * | 2010-08-20 | 2012-03-14 | 中国石油化工集团公司 | Method for producing sulfuric acid by oxygen-enriched air incineration of acid gas containing hydrogen sulfide |
| CN106145055A (en) * | 2016-08-30 | 2016-11-23 | 张家港市江南锅炉压力容器有限公司 | A kind of sulfur recovery facility |
| CN106163981A (en) * | 2014-02-28 | 2016-11-23 | 氟石科技公司 | Advanced oxygen-enriched arrangements and methods for sulfur recovery |
| US20170173527A1 (en) * | 2015-12-16 | 2017-06-22 | Saudi Arabian Oil Company | Thermal stage and reduction absorption sulfur recovery process |
-
2019
- 2019-03-29 CN CN201910246867.8A patent/CN109809368A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101193690A (en) * | 2005-04-06 | 2008-06-04 | 英国氧气集团有限公司 | Treatment of fuel gas |
| CN102371108A (en) * | 2010-08-20 | 2012-03-14 | 中国石油化工集团公司 | Method for producing sulfuric acid by oxygen-enriched air incineration of acid gas containing hydrogen sulfide |
| CN106163981A (en) * | 2014-02-28 | 2016-11-23 | 氟石科技公司 | Advanced oxygen-enriched arrangements and methods for sulfur recovery |
| US20170173527A1 (en) * | 2015-12-16 | 2017-06-22 | Saudi Arabian Oil Company | Thermal stage and reduction absorption sulfur recovery process |
| CN106145055A (en) * | 2016-08-30 | 2016-11-23 | 张家港市江南锅炉压力容器有限公司 | A kind of sulfur recovery facility |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110953597A (en) * | 2019-11-21 | 2020-04-03 | 浙江浙能技术研究院有限公司 | High-sulfur waste gas rich combustion device and energy utilization method |
| CN113264508A (en) * | 2020-02-17 | 2021-08-17 | 中国石油天然气集团有限公司 | Sulfur recovery method and device |
| CN113264508B (en) * | 2020-02-17 | 2022-08-05 | 中国石油天然气集团有限公司 | Sulfur recovery method and device |
| CN114132900A (en) * | 2021-12-07 | 2022-03-04 | 北京航化节能环保技术有限公司 | Sulfur recovery device switched by oxygen-enriched/air method in coking industry |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2182279B1 (en) | Oxyfuel boiler system and method of controlling the same | |
| CN104764340A (en) | Flue gas circulation system and method for sintering machine flue gas recirculation denitration | |
| CN109809368A (en) | A kind of oxygen-enriched combustion system and technique of the sulphur recovery for coal chemical industry | |
| JP2001132905A (en) | Method and apparatus for diluting fuel for reducing nox | |
| CN104197343B (en) | Oxygen-enriched combustion recycle flue gas catalytic desulfurization system and method | |
| CN206112904U (en) | Biomass boiler low -nitrogen combustion system | |
| CN107349780A (en) | A kind of aluminium cathode baking furnace fume Dry denitration method | |
| CN108905590A (en) | A kind of denitrating system and method for station boiler low NO collaboration high temperature spray ammonia | |
| CN113864789A (en) | Incineration system for treating sulfur-containing, nitrogen-containing and salt-containing waste liquid | |
| CN107099336B (en) | Cement decomposing furnace high temperature tertiary air coal gasification fires NO_x Reduction by Effective system again | |
| CN200955738Y (en) | Burner for sulfur recovery | |
| CN106675650B (en) | ERD (activated carbon reduction) and fire coal saturated steam catalytic combustion denitration device and process method | |
| CN112254529B (en) | Cement kiln decomposing furnace and method for reducing nitrogen oxides | |
| CN104748572A (en) | Oxidizing-absorbing type wet denitration system and method for smoke of sintering machine | |
| CN205216583U (en) | Full operating mode SCR denitration treatment system | |
| CN208878272U (en) | A kind of denitrating system of station boiler low NO collaboration high temperature spray ammonia | |
| CN204328994U (en) | Biomass boiler equipment for denitrifying flue gas | |
| CN208975539U (en) | A kind of flue gases of cock oven low temperature SCR denitration and waste heat recycle integrated apparatus | |
| CN202993174U (en) | Fire coal gas combination type high-efficiency low discharge grate firing device | |
| CN206229169U (en) | The system for desulfuration and denitration of flue gases of cock oven | |
| CN114061325A (en) | Cement manufacture is dore furnace for denitration | |
| CN208366101U (en) | A kind of tube furnace flue gas desulfurization and denitrification system | |
| CN210772131U (en) | Pulverized coal fired boiler structure | |
| CN108731011A (en) | Flue gas denitrification system | |
| CN204478025U (en) | Fire coal boiler fume two-phase method denitrification apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190528 |
|
| RJ01 | Rejection of invention patent application after publication |