CN103148705A - Afterheat integral utilization system for sulfuric acid production process - Google Patents
Afterheat integral utilization system for sulfuric acid production process Download PDFInfo
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- CN103148705A CN103148705A CN2013101174608A CN201310117460A CN103148705A CN 103148705 A CN103148705 A CN 103148705A CN 2013101174608 A CN2013101174608 A CN 2013101174608A CN 201310117460 A CN201310117460 A CN 201310117460A CN 103148705 A CN103148705 A CN 103148705A
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- heat exchanger
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- afterheat
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- 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
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- 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
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- 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
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Abstract
The invention relates to an afterheat integral utilization system for a sulfuric acid production process. The afterheat integral utilization system comprises deoxygenated water, a production shop, a next work procedure, a heat exchanger, furnace gas from a third heat exchanger, boiling furnace slag, a slag cooler, a slag discharge machine, an evaporator, furnace gas after primary dust removal, an afterheat power generating boiler and a steam turbine, wherein the deoxygenated water is connected to the heat exchanger, the heat exchanger is connected to the next work procedure, the furnace gas from the third heat exchanger is also connected to the heat exchanger, the heat exchanger is connected to the evaporator, the slag cooler and the afterheat power generating boiler through a high-temperature water supply pipeline, the boiling furnace slag is conveyed to the slag cooler, the slag cooler is simultaneously connected to the production shop and the slag discharge machine, the furnace gas after the primary dust removal is connected to the evaporator, the evaporator is simultaneously connected to the next work procedure and the production shop, the afterheat power generating boiler is connected to the steam turbine for driving the steam turbine to rotate, and the power generation is realized. The afterheat integral utilization system has the advantages that the integral structure is simple, the installation, the operation and the use are convenient, the stability is good, and the reliability is high. According to the characteristics of the sulfuric acid production process, the afterheat is utilized to the maximum degree, the energy is saved, and the consumption is reduced.
Description
Technical field
The present invention relates to the UTILIZATION OF VESIDUAL HEAT IN technology in the contact acid production technology, characteristics for distinct device waste heat in sulfuric acid production process, consider the characteristic of furnace gas corrosion, carry out integral body for available waste heat in gas washing in SA production and consider, designed brand-new energy conserving system and carried out waste heat recovery.
Background technology
In the contact acid production technology, the furnace gas that contains sulfur dioxide that troilite generates after the fluidizing reactor calcination enters boiler of power generation by waste heat, and after the deduster rough dusting, then temperature enters next procedure and continue to purify about more than 300 ℃.In this technique, enter the flue-gas temperature of next procedure lower do not affect this operation.The 3rd heat exchanger furnace gas export temperature out is generally 230 ℃ in conversion process, and this furnace gas is according to technological requirement, before entering the absorption tower, as long as temperature can guarantee just not affect the operation of back more than 160 ℃.This waste heat is not utilized at present.The slag temperature that fluidized bed furnace produces is about 900 ℃ of left and right, and this waste heat is not utilized at present.The feedwater of boiler of power generation by waste heat is generally that the water after the oxygen-eliminating device deoxygenation is directly sent into boiler, and its enthalpy is lower, affects the steam production of boiler of power generation by waste heat.And some equipment of workshop also needs to utilize low-pressure steam to heat.For the problems referred to above in sulfuric acid production process, the present invention has designed utilization system, and by rational advancing equipment, optimization system has realized effectively utilizing waste heat, the purpose of energy savings.
Summary of the invention
For the problem of the UTILIZATION OF VESIDUAL HEAT IN that solves sulfuric acid production process, the invention provides a kind of method of comprehensive utilization, according to each segment process characteristics, effectively utilize waste-heat working medium, low-pressure steam is provided, improves the gas production of boiler of power generation by waste heat, reach energy-saving and cost-reducing purpose.
Sulfuric acid production process waste heat comprehensive utilization system of the present invention includes furnace gas, boiler of power generation by waste heat, workshop B and steam turbine after out furnace gas of deaerated water, workshop A, next procedure A, heat exchanger, the 3rd heat exchanger, boiling furnace slag, slag cooler, mucking machine, next procedure B, evaporimeter, rough dusting.Deaerated water is connected to heat exchanger, and heat exchanger is connected to next procedure A, and the 3rd heat exchanger furnace gas out also is connected to heat exchanger, and heat exchanger is connected to evaporimeter, slag cooler and boiler of power generation by waste heat by the high temperature water-supply pipeline.Boiling furnace slag is transported to slag cooler, and slag cooler is connected to workshop A and mucking machine simultaneously.Furnace gas after rough dusting is connected to evaporimeter, and evaporimeter is connected to again next procedure B and workshop B simultaneously.Boiler of power generation by waste heat is connected to steam turbine, and driving steam turbine rotates, and realizes generating.Sulfuric acid production process waste heat comprehensive utilization system of the present invention through boiler of power generation by waste heat cooling, the furnace gas after the deduster rough dusting, because temperature is higher, is used for heating fumigators, makes it produce steam.Slag adopts slag cooler to produce steam.Heat by heat exchanger the water that oxygen-eliminating device is come with the 3rd heat exchanger furnace gas out, improve its enthalpy, become high temperature water-supply, then be divided into three the tunnel through the high temperature water-supply pipeline.One tunnel feedwater as boiler of power generation by waste heat because Enthalpy of Feed Water improves, has therefore increased the steam production of boiler of power generation by waste heat; The the second tunnel feedwater as evaporimeter produces steam for workshop B; Third Road produces steam for workshop A as the feedwater of slag cooler.By the heat exchanger heated feed water, make it become high temperature water-supply with the 3rd heat exchanger burner gas residual heat out, send into the high temperature water-supply pipeline; Heat high temperature water-supply with the burner gas residual heat after rough dusting by evaporimeter, produce steam; Waste heat with slag heats high temperature water-supply by slag cooler, produces steam; The feedwater of evaporimeter, slag cooler, boiler of power generation by waste heat is all supplied with by the high temperature water-supply pipeline.
Sulfuric acid production process waste heat comprehensive utilization system of the present invention, overall structure is simple, installation and easy for operation, good stability, reliability is high.Sulfuric acid production process waste heat comprehensive utilization system of the present invention is according to the characteristics of sulfuric acid production process, with waste heat and the whole system combination of each several part in sulfuric acid production process, by the maximized waste heat, energy-saving and cost-reducing that utilizes of waste heat comprehensive utilization system.
Description of drawings
Accompanying drawing 1 is the schematic diagram that the waste heat comprehensive utilization system in sulfuric acid production process of the present invention is used, and dotted portion is that carbonated drink is moved towards schematic diagram.Furnace gas 12-boiler of power generation by waste heat 13-workshop B 14-steam turbine after 1-deaerated water, 2-workshop, 3-next procedure A, 4-heat exchanger the 5-the three heat exchanger furnace gas 6-boiling furnace slag 7-slag cooler 8-mucking machine 9-next procedure B 10-evaporimeter 11-rough dusting out.
The specific embodiment
Referring now to accompanying drawing 1, be described as follows in conjunction with the embodiments: sulfuric acid production process waste heat comprehensive utilization system of the present invention includes furnace gas 11, boiler of power generation by waste heat 12, workshop B13 and steam turbine 14 after out furnace gas 5 of deaerated water 1, workshop A2, next procedure A3, heat exchanger 4, the 3rd heat exchanger, boiling furnace slag 6, slag cooler 7, mucking machine 8, next procedure B9, evaporimeter 10, rough dusting.Deaerated water 1 is connected to heat exchanger 4, and heat exchanger 4 is connected to next procedure A3, and the 3rd heat exchanger furnace gas 5 out also is connected to heat exchanger 4, and heat exchanger 4 is connected to evaporimeter 10, slag cooler 7 and boiler of power generation by waste heat 12 by the high temperature water-supply pipeline.Boiling furnace slag 6 is transported to slag cooler 7, and slag cooler 7 is connected to workshop A2 and mucking machine 8 simultaneously.Furnace gas 11 after rough dusting is connected to evaporimeter 10, and evaporimeter 10 is connected to again next procedure B9 and workshop B13 simultaneously.Boiler of power generation by waste heat 12 is connected to steam turbine 14, and driving steam turbine 14 rotates, and realizes generating.Sulfuric acid production process waste heat comprehensive utilization system of the present invention, through boiler of power generation by waste heat 12 cooling, the furnace gas 11 after the deduster rough dusting because temperature is higher, is used for heating fumigators 10, makes evaporimeter 10 produce steam.Slag adopts slag cooler 7 to produce steam.Water with the 3rd heat exchanger furnace gas 5 is out come by heat exchanger 4 heating oxygen-eliminating devices improves its enthalpy, becomes high temperature water-supply, then is divided into three the tunnel through the high temperature water-supply pipeline.One tunnel feedwater as boiler of power generation by waste heat 12 because Enthalpy of Feed Water improves, has therefore increased the steam production of boiler of power generation by waste heat 12; The the second tunnel feedwater as evaporimeter 10 produces steam for workshop B13; Third Road produces steam for workshop A2 as the feedwater of slag cooler 7.By heat exchanger 4 heated feed waters, make it become high temperature water-supply with the 3rd heat exchanger furnace gas 5 waste heats out, send into the high temperature water-supply pipeline; By evaporimeter 10 heating high temperature water-supplies, produce steam with furnace gas 11 waste heats after rough dusting; Waste heat with slag heats high temperature water-supplies by slag cooler 7, produces steam; The feedwater of evaporimeter 10, slag cooler 7, boiler of power generation by waste heat 12 is all supplied with by the high temperature water-supply pipeline.With reference in accompanying drawing 1 take 100,000 sulfuric acid production systems as example, heat exchanger 4 is reduced to 160 ℃ with the 3rd heat exchanger furnace gas 5 out by 230 ℃ by heat exchange, enter next procedure A3, simultaneously deaerated water (general 104 ℃) heating is brought up to 145 ℃, become high temperature water-supply.High temperature water-supply is divided into three the tunnel through the high temperature water-supply pipeline.One the tunnel enters boiler of power generation by waste heat, because Enthalpy of Feed Water improves, has therefore increased the steam production of boiler of power generation by waste heat; The second the tunnel enters evaporimeter, through the heating of 320 ℃ of furnace gases after rough dusting, produces the saturated vapor of 1.0MPa for workshop, and furnace gas is down to 230 ℃ simultaneously, enters next procedure; Third Road enters slag cooler, and the saturated vapor that the slags of 900 ℃ are carried out cooling generation 1.0 MPa enters mucking machine for workshop through the slag after just cold.Selecting of heat exchanger, evaporator material, consider sulfuric acid corrosion, cooled furnace gas temperature should be considered corrosion condition, also will guarantee the requirement of production technology.Sulfuric acid production process waste heat comprehensive utilization system of the present invention, overall structure is simple, installation and easy for operation, good stability, reliability is high.Sulfuric acid production process waste heat comprehensive utilization system of the present invention is according to the characteristics of sulfuric acid production process, with waste heat and the whole system combination of each several part in sulfuric acid production process, by the maximized waste heat, energy-saving and cost-reducing that utilizes of waste heat comprehensive utilization system.
Claims (1)
1. sulfuric acid production process waste heat comprehensive utilization system, include deaerated water (1), workshop A(2), next procedure A(3), heat exchanger (4), the 3rd heat exchanger furnace gas (5) out, boiling furnace slag (6), slag cooler (7), mucking machine (8), next procedure B(9), evaporimeter (10), furnace gas after rough dusting (11), boiler of power generation by waste heat (12), workshop B(13) and steam turbine (14), it is characterized in that with the 3rd heat exchanger furnace gas (5) waste heat out by heat exchanger (4) heated feed water, make it become high temperature water-supply, send into the high temperature water-supply pipeline, by evaporimeter (10) heating high temperature water-supply, produce steam with the furnace gas after rough dusting (11) waste heat, waste heat with slag heats high temperature water-supply by slag cooler (7), produces steam, the feedwater of evaporimeter (10), slag cooler (7), boiler of power generation by waste heat (12) is all supplied with by the high temperature water-supply pipeline.
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| CN201310117460.8A CN103148705B (en) | 2013-04-07 | 2013-04-07 | Afterheat integral utilization system for sulfuric acid production process |
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| CN201310117460.8A CN103148705B (en) | 2013-04-07 | 2013-04-07 | Afterheat integral utilization system for sulfuric acid production process |
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| CN103148705B CN103148705B (en) | 2014-06-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109668131A (en) * | 2018-12-10 | 2019-04-23 | 山东京博众诚清洁能源有限公司 | The system and technique of Waste Heat Reuse middle pressure steam in a kind of gas washing in SA production |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU1791283A (en) * | 1982-08-12 | 1984-02-16 | Metallgesellschaft Aktiengesellschaft | Process of producing sulphuric acid |
| US5130112A (en) * | 1990-03-23 | 1992-07-14 | Monsanto Company | Method for recovering high grade process energy from a contact sulfuric acid process |
| CN2622558Y (en) * | 2003-06-18 | 2004-06-30 | 敖建军 | Heat-exchange system for coal-saving device |
| CN2780738Y (en) * | 2005-04-28 | 2006-05-17 | 南京圣诺热管有限公司 | Waste heat recovery system and device of sulfuric acid production |
| CN1986389A (en) * | 2005-12-22 | 2007-06-27 | 南化集团研究院 | Method of utilizing waste heat after boiling furnace in sulfuric acid production |
| CN201190585Y (en) * | 2008-03-14 | 2009-02-04 | 西安思安新能源有限公司 | Power installation by waste heat of sulfuric acid |
-
2013
- 2013-04-07 CN CN201310117460.8A patent/CN103148705B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU1791283A (en) * | 1982-08-12 | 1984-02-16 | Metallgesellschaft Aktiengesellschaft | Process of producing sulphuric acid |
| US5130112A (en) * | 1990-03-23 | 1992-07-14 | Monsanto Company | Method for recovering high grade process energy from a contact sulfuric acid process |
| CN2622558Y (en) * | 2003-06-18 | 2004-06-30 | 敖建军 | Heat-exchange system for coal-saving device |
| CN2780738Y (en) * | 2005-04-28 | 2006-05-17 | 南京圣诺热管有限公司 | Waste heat recovery system and device of sulfuric acid production |
| CN1986389A (en) * | 2005-12-22 | 2007-06-27 | 南化集团研究院 | Method of utilizing waste heat after boiling furnace in sulfuric acid production |
| CN201190585Y (en) * | 2008-03-14 | 2009-02-04 | 西安思安新能源有限公司 | Power installation by waste heat of sulfuric acid |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109668131A (en) * | 2018-12-10 | 2019-04-23 | 山东京博众诚清洁能源有限公司 | The system and technique of Waste Heat Reuse middle pressure steam in a kind of gas washing in SA production |
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| CN103148705B (en) | 2014-06-11 |
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Effective date of registration: 20180607 Address after: 272000 Li Ying Street office, Rencheng District, Jining, Shandong province (Jining Jinyu warehousing Co., Ltd.) Patentee after: Jining China moral eco-friendly power source science and technology limited Company Address before: 272000 Jining special branch of Shandong special equipment inspection institute, No. 132 Wutai Gate Road, Rencheng District, Jining, Shandong Patentee before: Yang Qunfeng |
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