CN102910592B - Quasi-isothermal venturi converter for heat energy substitution - Google Patents
Quasi-isothermal venturi converter for heat energy substitution Download PDFInfo
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- CN102910592B CN102910592B CN201210424471.6A CN201210424471A CN102910592B CN 102910592 B CN102910592 B CN 102910592B CN 201210424471 A CN201210424471 A CN 201210424471A CN 102910592 B CN102910592 B CN 102910592B
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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
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Abstract
The invention discloses a quasi-isothermal venturi converter for heat energy substitution. The high concentration conversion in sulfuric acid production is always an industry problem, the concentration of sulfur dioxide produced in a modern smelting furnace is as high as 30%-60%, the sulfur dioxide in such high concentration cannot enter converting and dry absorbing sections of the conventional sulfuric acid preparation system, the heat imbalance is caused, and the system cannot remove the heat easily, resulting in catalyst failure, high temperature deformation of equipment, excessive temperature of dry absorbing acid and too low single layer conversion rate. The problems affect the normal production of the system severely; the quasi-isothermal venturi converter for the heat energy substitution is equipment which is developed on the basis of a reaction equilibrium principle and is applicable to preparing the sulfuric acid from fume with high concentration of the sulfur dioxide; the heat can be removed from the converter continuously during the oxidation reaction of the sulfur dioxide, and the single layer conversion rate is increased by nearly 1.4 times, so that the converter facilitates the exothermic reaction towards the right continuously and has an effect of protecting the catalyst and the equipment. The quasi-isothermal venturi converter mainly comprises a housing, a gas distribution plate, a reaction tube bundle, a shell side jacket, a built-in air duct, a tube bundle supporting grid, a built-in venturi preheater and the like.
Description
Technical field
The present invention relates to gas washing in SA production and other heat recovery technology fields, particularly in acid production with sulphur, metallurgical off-gas acid-making, pyrite-based sulfuric acid production and other heat-exchange equipments with SO2 flue gas extracting sulfuric acid.
Background technology
Gas washing in SA production middle and high concentration transformation technology is an industry difficult problem always, along with the progress of smelting technology, and the development of oxygen-rich smelting technology, current many metallurgical furnace kilns have all improved the concentration of smelting exhaust sulfurous gas.What the sulfur dioxide concentration that modern smelting furnace is produced had can be up to 30%～60%, and so high sulfur dioxide concentration is difficult to enter conversion and the dry absorption section of conventional acid making system, and individual layer transformation efficiency is too low.And can cause heat uneven, system is difficult to heat well to shift out, can cause catalyst failure, equipment high temperature deformation, the dry acid temperature of inhaling too high, these all have a strong impact on the normal production of system.
The correlation technique that at present offshore company such as Otto Thailand, Meng Moke all has high density to transform is all by technological design, to reach the object of conversion high density sulfurous gas.The technology of Otto Thailand is circulating flue gas transformation technology, utilizes one section of sulphur trioxide transform generating to return to one section of carrying out that suppresses one section of conversion with a certain amount of, reduces one stage conversion, has also controlled one deck temperature out simultaneously.But the high-temperature blower using in this technology is expensive, fragile, and energy consumption is higher, the high density transformation technology of Meng Moke is a kind of pair of raw material method conversion process, adopt two kinds of different unstripped gass, high concentrations of gas and diluent air, allow all diluent airs all be added in sub-fraction high-concentration fume, mixed gas reacts at one deck, the gas of remaining high concentrations of gas after one deck outlet and pre-inversion mixes, this technique can not surpass the temperature that catalyzer can bear, can obtain the concentration that a comparatively suitable conversion system is produced, but this technique cannot be processed sulfur dioxide concentration and surpass 18% flue gas, actual this kind of technique is in nineteen thirty-five, to have applied for patent by Frenchman Ugine Kuhlmann.Above two kinds of methods have certain limitation and are unfavorable for energy recovery.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, provide a kind of effective solution owing to entering the too high system thermal imbalance causing of sulfur dioxide concentration of convertor, system is difficult to heat well to shift out, catalyst failure, equipment high temperature deformation, dryly inhale the problems such as sour temperature is excessively high, greatly improve individual layer transformation efficiency, and recovery system heat energy well, the accurate isothermal Venturi heat energy displacement convertor of byproduct steam.
The present invention is for solving the problems of the technologies described above, provide following technical scheme: a kind of accurate isothermal Venturi heat energy displacement convertor, it is characterized in that comprising accurate isothermal transformation device, air preheater, described accurate isothermal transformation device comprises housing, upper and lower two tube sheets are set in housing and are separated into three cabins of upper, middle and lower, top, upper cabin offers gas approach, under gas approach, be provided with gas distribution grid, described middle deck is indoor is provided with some heat-exchanging tube bundles, also fixed seal connection in the corresponding through hole of offering on tube sheet is stretched at described heat-exchanging tube bundle two ends, in described heat-exchanging tube bundle, be filled with reaction catalyst, the tube sheet below on top, lower cabin is provided with supportive grid, described housing center is provided with air preheater, air preheater is circular cylinder body, upper end stretches into that middle deck is indoor to be sealed by upper tubesheet, it is fixing that the sealing of lower cabin is stretched in lower end, described air preheater comprises housing, upper and lower two tube sheets are set in housing and are separated into three chambers of upper, middle and lower, in middle chamber, be provided with some heat-exchanging tube bundles, heat-exchanging tube bundle two ends are stretched in the through hole that lower tubesheet correspondence offers, fixed seal connection, described upper chamber is communicated with the middle cabin of accurate isothermal transformation device, lower chambers is provided with air intlet pipeline, described middle chamber is communicated with lower cabin, on middle chamber shell, be provided with preheater chuck, on preheater chuck, be provided with exhanst gas outlet, on described middle deck chamber enclosure, be provided with external jacket, on external jacket, be provided with air vout pipe.
As preferably, on air preheater upper chamber shell, offer air-guiding hole.
As preferentially, on air preheater middle chamber shell, offer air-guiding hole.
For better explaining technical scheme of the present invention, below introduce in detail principle of work of the present invention: the flue gas containing sulfurous gas of the 420 ℃ of left and right that come from the outside enters from accurate isothermal Venturi heat energy displacement convertor gas approach, after flue gas being uniformly distributed by gas distribution grid, enter the indoor heat-exchanging tube bundle of accurate isothermal transformation device middle deck, in heat-exchanging tube bundle, filled reaction catalyst (catalyzer), flue gas containing sulfurous gas enters after heat-exchanging tube bundle reaction, supportive grid by lower tubesheet below enters lower cabin, then enter air preheater middle chamber, finally enter preheater chuck, by the exhanst gas outlet on preheater chuck, send next equipment (two sections convertor or interchanger) that enters, flue gas containing sulfurous gas utilizes the air of percolation between pipe to continue cooling in the process by the indoor heat-exchanging tube bundle of accurate isothermal transformation device middle deck, the heat producing in reaction tubes is continued to shift out, the air intlet pipeline of the air that is used for moving heat drop temperature air preheater lower chambers enters, after flowing into middle chamber, first entered after the reaction flue gas heating of air preheater middle chamber, enter upper chamber, because upper chamber is communicated with middle cabin, air after preheating enters between the pipe of heat-exchanging tube bundle in cabin, high-temperature flue gas is lowered the temperature and moved heat, finally flow to external jacket, by air vout pipe, discharged, be sent to the operation of byproduct steam.
Beneficial effect of the present invention: the present invention is under the condition of high concentration SO 2 relieving haperacidity, the transformation efficiency of one deck is no better than three layers of transformation efficiency sum of tradition, make simple, greatly reduce cost, and occupation area of equipment is little, saves space, by utilizing air heat-exchange, recovery system heat, has also effectively prevented the corrosion of heat transfer tube to greatest extent, and range of application is comparatively extensive.
Accompanying drawing explanation
Fig. 1 is semisectional view of the present invention.
Embodiment
A kind of accurate isothermal Venturi heat energy displacement convertor, comprise accurate isothermal transformation device 001, air preheater 002, described accurate isothermal transformation device 001 comprises housing, upper and lower two tube sheets (011 are set in housing, 012) be separated into three cabins (013 of upper, middle and lower, 014, 015), 013 top, upper cabin offers gas approach 016, under gas approach 016, be provided with gas distribution grid 017, in described middle cabin 014, be provided with some heat-exchanging tube bundles 018, tube sheet (011 is stretched at described heat-exchanging tube bundle 018 two ends, 012) also fixed seal connection in the through hole that upper correspondence is offered, in described heat-exchanging tube bundle 018, be filled with reaction catalyst, tube sheet 012 below on 015 top, lower cabin is provided with supportive grid 004, described housing center is provided with air preheater 002, air preheater 002 is circular cylinder body, upper end is stretched in middle cabin 014 and is sealed by upper tubesheet 011, it is fixing that 015 sealing of lower cabin is stretched in lower end, described air preheater 002 comprises housing, upper and lower two tube sheets (021 are set in housing, 022) be separated into three chambers (023 of upper, middle and lower, 024, 025), in middle chamber 024, be provided with some heat-exchanging tube bundles 026, lower tubesheet (021 is stretched at heat-exchanging tube bundle 026 two ends, 022) in the through hole that correspondence is offered, fixed seal connection, described upper chamber 023 is communicated with the middle cabin 014 of accurate isothermal transformation device 002, lower chambers 025 is provided with air intlet pipeline 027, described middle chamber 024 is communicated with lower cabin 015, on middle chamber 024 shell, be provided with preheater chuck 005, on preheater chuck 005, be provided with exhanst gas outlet 051, on 014 shell of described middle cabin, be provided with external jacket 006, on external jacket 006, be provided with air vout pipe 061, as preferably, on air preheater 002 upper chamber's 023 shell, offer air-guiding hole 231, as preferably, on air preheater 002 middle chamber 024 shell, offer air-guiding hole 241.
Claims (3)
1. an accurate isothermal Venturi heat energy displacement convertor, it is characterized in that comprising accurate isothermal transformation device, air preheater, described accurate isothermal transformation device comprises housing, upper and lower two tube sheets are set in housing and are separated into three cabins of upper, middle and lower, top, upper cabin offers gas approach, under gas approach, be provided with gas distribution grid, described middle deck is indoor is provided with some heat-exchanging tube bundles, also fixed seal connection in the corresponding through hole of offering on tube sheet is stretched at described heat-exchanging tube bundle two ends, in described heat-exchanging tube bundle, be filled with reaction catalyst, the tube sheet below on top, lower cabin is provided with supportive grid, described housing center is provided with air preheater, air preheater is circular cylinder body, upper end stretches into that middle deck is indoor to be sealed by upper tubesheet, it is fixing that the sealing of lower cabin is stretched in lower end, described air preheater comprises housing, upper and lower two tube sheets are set in housing and are separated into three chambers of upper, middle and lower, in middle chamber, be provided with some heat-exchanging tube bundles, heat-exchanging tube bundle two ends are stretched in the through hole that lower tubesheet correspondence offers, fixed seal connection, described upper chamber is communicated with the middle cabin of accurate isothermal transformation device, lower chambers is provided with air intlet pipeline, described middle chamber is communicated with lower cabin, on middle chamber shell, be provided with preheater chuck, on preheater chuck, be provided with exhanst gas outlet, on described middle deck chamber enclosure, be provided with external jacket, on external jacket, be provided with air vout pipe.
2. a kind of accurate isothermal Venturi heat energy displacement convertor according to claim 1, is characterized in that offering air-guiding hole on air preheater upper chamber shell.
3. a kind of accurate isothermal Venturi heat energy displacement convertor according to claim 1, is characterized in that offering air-guiding hole on air preheater middle chamber shell.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210424471.6A CN102910592B (en) | 2012-10-31 | 2012-10-31 | Quasi-isothermal venturi converter for heat energy substitution |
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| CN201210424471.6A CN102910592B (en) | 2012-10-31 | 2012-10-31 | Quasi-isothermal venturi converter for heat energy substitution |
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| CN102910592B true CN102910592B (en) | 2014-04-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104128092A (en) * | 2014-08-20 | 2014-11-05 | 德州奥深节能环保技术有限公司 | Integral energy-saving catalytic reaction device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113401871B (en) * | 2021-07-06 | 2023-01-06 | 中石化宁波工程有限公司 | Tubular sectional controllable semi-isothermal converter |
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| CN2280087Y (en) * | 1996-12-20 | 1998-04-29 | 南京化工大学 | Reactor for conversion sulfur oxides by use of heat pipe heat-exchange |
| CN1268484A (en) * | 2000-04-06 | 2000-10-04 | 应燮堂 | Improvement of high-concentration sulfur dioxide three-conversion three-absorption acid-making process |
| CN2769807Y (en) * | 2005-01-27 | 2006-04-05 | 扬州庆松化工设备有限公司 | Orifice corrugated pipe heat exchanger |
| CN201361530Y (en) * | 2009-01-06 | 2009-12-16 | 中国瑞林工程技术有限公司 | Flue gas recirculation loop of high-concentration sulfur dioxide reforming device |
| WO2011137506A1 (en) * | 2010-05-06 | 2011-11-10 | Chemetics Inc. | Shell and tube heat exchangers |
| CN102303848A (en) * | 2011-04-02 | 2012-01-04 | 中冶焦耐(大连)工程技术有限公司 | Method for exchanging heat between high-temperature process gas and low-temperature process gas in acid production process |
| CN102336397A (en) * | 2011-09-27 | 2012-02-01 | 宜兴市化工成套设备有限公司 | Continuous heat transfer sulfur dioxide converter |
| CN202880883U (en) * | 2012-10-31 | 2013-04-17 | 宜兴市化工成套设备有限公司 | Quasi isothermal venturi heat energy replacement converter |
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2012
- 2012-10-31 CN CN201210424471.6A patent/CN102910592B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2280087Y (en) * | 1996-12-20 | 1998-04-29 | 南京化工大学 | Reactor for conversion sulfur oxides by use of heat pipe heat-exchange |
| CN1268484A (en) * | 2000-04-06 | 2000-10-04 | 应燮堂 | Improvement of high-concentration sulfur dioxide three-conversion three-absorption acid-making process |
| CN2769807Y (en) * | 2005-01-27 | 2006-04-05 | 扬州庆松化工设备有限公司 | Orifice corrugated pipe heat exchanger |
| CN201361530Y (en) * | 2009-01-06 | 2009-12-16 | 中国瑞林工程技术有限公司 | Flue gas recirculation loop of high-concentration sulfur dioxide reforming device |
| WO2011137506A1 (en) * | 2010-05-06 | 2011-11-10 | Chemetics Inc. | Shell and tube heat exchangers |
| CN102303848A (en) * | 2011-04-02 | 2012-01-04 | 中冶焦耐(大连)工程技术有限公司 | Method for exchanging heat between high-temperature process gas and low-temperature process gas in acid production process |
| CN102336397A (en) * | 2011-09-27 | 2012-02-01 | 宜兴市化工成套设备有限公司 | Continuous heat transfer sulfur dioxide converter |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104128092A (en) * | 2014-08-20 | 2014-11-05 | 德州奥深节能环保技术有限公司 | Integral energy-saving catalytic reaction device |
| CN104128092B (en) * | 2014-08-20 | 2016-03-09 | 德州奥深节能环保技术有限公司 | Integral energy-saving catalyst reaction device |
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| CN102910592A (en) | 2013-02-06 |
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Owner name: JINCHUAN GROUP CO., LTD. Effective date: 20130913 |
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Inventor after: Song Xiaoliang Inventor after: Liu Yuqiang Inventor after: Li Shuquan Inventor after: Chang Quanzhong Inventor after: Zhu Qibao Inventor after: Su Wenguo Inventor after: Sun Zhizhong Inventor after: Dai Yunjun Inventor before: Song Xiaoliang Inventor before: Li Shuquan Inventor before: Chang Quanzhong |
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Free format text: CORRECT: INVENTOR; FROM: SONG XIAOLIANG LI SHUQUAN CHANG QUANZHONG TO: SONG XIAOLIANG LIU YUQIANG LI SHUQUAN CHANG QUANZHONG ZHU QIBAO SU WENGUO SUN ZHIZHONG DAI YUNJUN |
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Effective date of registration: 20130913 Address after: Huankeyuan garden 214205 Yixing Road, Jiangsu city of Wuxi province No. 105 Applicant after: Yixing City Chemical Industry Complete Equipment Co., Ltd. Applicant after: Jinchuan Group Co., Ltd. Address before: Huankeyuan garden 214205 Yixing Road, Jiangsu city of Wuxi province No. 105 Applicant before: Yixing City Chemical Industry Complete Equipment Co., Ltd. |
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Owner name: SHUANGDUN ENVIRONMENTAL TECHNOLOGY CO., LTD. Free format text: FORMER NAME: YIXING CHEMICAL INDUSTRY COMPLETE-SET EQUIPMENT CO., LTD. |
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Address after: Huankeyuan garden 214205 Yixing Road, Jiangsu city of Wuxi province No. 105 Patentee after: SHUANGDUN ENVIRONMENT TECHNOLOGY CO., LTD. Patentee after: Jinchuan Group Co., Ltd. Address before: Huankeyuan garden 214205 Yixing Road, Jiangsu city of Wuxi province No. 105 Patentee before: Yixing City Chemical Industry Complete Equipment Co., Ltd. Patentee before: Jinchuan Group Co., Ltd. |