CN202945061U - Intermediate and low temperature heat energy recycling system used in pyrite acid making process - Google Patents
Intermediate and low temperature heat energy recycling system used in pyrite acid making process Download PDFInfo
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- CN202945061U CN202945061U CN2012206662810U CN201220666281U CN202945061U CN 202945061 U CN202945061 U CN 202945061U CN 2012206662810 U CN2012206662810 U CN 2012206662810U CN 201220666281 U CN201220666281 U CN 201220666281U CN 202945061 U CN202945061 U CN 202945061U
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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
Abstract
The utility model discloses an intermediate and low temperature heat energy recycling system used in a pyrite acid making process. The intermediate and low temperature heat energy recycling system comprises a waste heat boiler, a cyclone dust collector, a purification coal economizer, a power wave washing tower, a cooling tower, a primary electric demister, a secondary electric demister, a drying tower, a converter, a heat exchanger and a conversion coal economizer, wherein the purification coal economizer is internally provided with an upper snake-shaped elbow and a lower snake-shaped elbow which are independent, each snake-shaped elbow is provided with one water inlet and one water outlet, and the water inlet and the water outlet of the upper snake-shaped elbow are connected with the water outlet of the conversion coal economizer and a steam pocket arranged on the waste heat boiler; and the water inlet and the water outlet of the lower snake-shaped elbow are respectively connected with a desalted water station and the water inlet of a deaerator, and the water outlet of the deaerator is connected with the water inlet of the conversion coal economizer. By adopting the intermediate and low temperature heat energy recycling system, intermediate temperature waste heat and low temperature waste heat produced in an acid making process can be recycled at the same time, and utilization of resource in maximum extent is realized.
Description
Technical field
The utility model relates to the gas washing in SA production technical field, more particularly, relate in particular in a kind of pyrite-based sulfuric acid production technique in, the low temperature heat energy recovery system.
Background technology
Sulfuric acid can produce a large amount of heat energy in process of production, comprises the heat energy of high, medium and low three kinds of potential temperatures.At present, in the sulfuric acid preparation technology take sulfurous iron ore as raw material, be mainly used in generating after the high potential temperature energy recovery that roasting workshop section produces, and technology is relatively ripe.Yet, middle potential temperature heat energy and conversion section (SO that flue gas cleaning workshop section produces
2Catalytic oxidation generates SO
3) low-temperature heat energy that produces is owing to there being the problem that recovery process is complicated, heat utilization rate is low, can't well be utilized always.Therefore, how to recycle simultaneously produce in the relieving haperacidity process in, low temperature exhaust heat, become a great problem that needs to be resolved hurrily in industry.
The utility model content
The purpose of this utility model is for above-mentioned the deficiencies in the prior art, provide in a kind of pyrite-based sulfuric acid production technique in, the low temperature heat energy recovery system, recycle simultaneously produce in the relieving haperacidity process in, low temperature exhaust heat, realize the maximum using of resource.
for achieving the above object, in in pyrite-based sulfuric acid production technique provided by the utility model, the low temperature heat energy recovery system, comprise the waste heat boiler of serial connection successively, tornado dust collector, electric precipitator, purify economizer, the dynamic wave scrubbing tower, cooling tower, the one-level electrostatic precipitator, the secondary electrostatic precipitator, drying tower, convertor, interchanger, and conversion economizer, be provided with in described purification economizer, lower two coil independently snake bend, every dish snake bend is provided with a water-in and a water outlet, wherein, advancing of snake bend above being positioned at, water outlet is connected with the water outlet that transforms economizer and the drum on waste heat boiler respectively, the entery and delivery port that is positioned at the snake bend of below connects respectively the water-in of Desultwater Station and deoxygenator, and the water outlet of deoxygenator is connected with the water-in that transforms economizer.
The utility model is by purifying economizer, transform the connection between economizer and deoxygenator, and the low temperature heat energy that the middle potential temperature heat energy that flue gas cleaning workshop section is produced and conversion section produce is recycled simultaneously, has realized the maximum using of resource.
Description of drawings
Fig. 1 is structural representation of the present utility model.
In figure: the 1-waste heat boiler; The 2-tornado dust collector; The 3-electric precipitator; 4-purifies economizer; 5-dynamic wave scrubbing tower; The 6-cooling tower; 7-one-level electrostatic precipitator; 8-secondary electrostatic precipitator; The 9-drying tower; The 10-convertor; The 11-interchanger; 12-transforms economizer; The 13-deoxygenator; The 14-Desultwater Station; The 15-drum.
Embodiment
The utility model is described in further detail below in conjunction with the embodiment in accompanying drawing, but do not consist of any restriction of the present utility model.
Consult shown in Figure 1, in in the utility model pyrite-based sulfuric acid production technique, the low temperature heat energy recovery system, comprise successively serial connection waste heat boiler 1, tornado dust collector 2, electric precipitator 3, purify economizer 4, dynamic wave scrubbing tower 5, cooling tower 6, one-level electrostatic precipitator 7, secondary electrostatic precipitator 8, drying tower 9, convertor 10, interchanger 11 and transform economizer 12.Be provided with upper and lower two in described purification economizer 4 and coil independently snake bend, every dish snake bend is provided with a water-in and a water outlet, wherein, the entery and delivery port that is positioned at the snake bend of top is connected with the water outlet that transforms economizer 12 and the drum 15 on waste heat boiler 1 respectively; The entery and delivery port that is positioned at the snake bend of below connects respectively the water-in of Desultwater Station 14 and deoxygenator 13, and the water outlet of deoxygenator 13 is connected with the water-in that transforms economizer 12.
Whole heat reclaiming system is divided into smoke heat energy recovery system (solid line part in figure) and steam heat reclaiming system (dotted portion in figure) two portions.
The basic procedure of smoke heat energy recovery system is: the SO that roasting workshop section generates
2Flue gas (temperature is up to 900～1000 ℃) is from fluidizing furnace top discharge, enter waste heat boiler 1 and carry out waste heat recovery, again after tornado dust collector 2 and electric precipitator 3 are removed wherein most of mine dust, temperature is down to about 300 ℃, then enter and purify economizer 4, carry out heat exchange with the de-salted water from Desultwater Station 14, temperature is down to 200 ℃ by 300 ℃, then successively through after the cleaning sections such as dynamic wave scrubbing tower 5, cooling tower 6, one-level electrostatic precipitator 7 and the 8 cooling dedustings of secondary electrostatic precipitator, acid-mist-removing, temperature is down to 35～38 ℃; SO after purification
2Gas enters drying tower 9 and carries out drying treatment, enters convertor 10 after drying and generates SO with the oxygen catalytic oxidation
3, SO
3Gas is after interchanger 11 preheatings, and temperature rises to about 270 ℃, then enters and transform economizer 12, carries out heat exchange with deaerated water from deoxygenator 13, and temperature is down to 160 ℃, SO by 270 ℃
3Gas enters the absorption tower from transforming economizer 12 tops discharges, absorbs the sulfuric acid that moisture is made different concns.
The basic procedure of steam heat reclaiming system is: the de-salted water from Desultwater Station 14 enters the snake bend that purifies economizer 4 belows, the interior SO of absorption cleaning economizer 4
2The heat of flue gas, water temperature enters deoxygenator 13 after rising to 85 ℃ by 55 ℃, deoxygenator 13 receives the steam from turbine driven set simultaneously, steam is heated to 104 ℃ with de-salted water, and remove oxygen in water, deaerated water enters conversion economizer 12 after deoxygenator 13 flows out, absorb to transform the interior SO of economizer 12
3The heat of gas, water temperature rises to 181.5 ℃ by 104 ℃, then enters the snake bend that purifies economizer 4 tops, the interior SO of absorption cleaning economizer 4
2The heat of flue gas, water temperature are elevated in the drum 15 that enters waste heat boiler 1 after 203 ℃, are admitted to turbine driven set for generating after the waste heat that the vapor absorption waste heat boiler 1 in drum 15 reclaims.
Claims (1)
- in a pyrite-based sulfuric acid production technique in, the low temperature heat energy recovery system, comprise the waste heat boiler of serial connection successively, tornado dust collector, electric precipitator, purify economizer, the dynamic wave scrubbing tower, cooling tower, the one-level electrostatic precipitator, the secondary electrostatic precipitator, drying tower, convertor, interchanger, and conversion economizer, it is characterized in that: be provided with in described purification economizer, lower two coil independently snake bend, every dish snake bend is provided with a water-in and a water outlet, wherein, advancing of snake bend above being positioned at, water outlet is connected with the water outlet that transforms economizer and the drum on waste heat boiler respectively, the entery and delivery port that is positioned at the snake bend of below connects respectively the water-in of Desultwater Station and deoxygenator, and the water outlet of deoxygenator is connected with the water-in that transforms economizer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206662810U CN202945061U (en) | 2012-12-06 | 2012-12-06 | Intermediate and low temperature heat energy recycling system used in pyrite acid making process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012206662810U CN202945061U (en) | 2012-12-06 | 2012-12-06 | Intermediate and low temperature heat energy recycling system used in pyrite acid making process |
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| CN202945061U true CN202945061U (en) | 2013-05-22 |
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| CN2012206662810U Expired - Fee Related CN202945061U (en) | 2012-12-06 | 2012-12-06 | Intermediate and low temperature heat energy recycling system used in pyrite acid making process |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103278020A (en) * | 2013-06-28 | 2013-09-04 | 瓮福（集团）有限责任公司 | Blaster furnace slag waste heat recovery method for iron pyrite acid making device |
| CN103303876A (en) * | 2013-06-07 | 2013-09-18 | 瓮福（集团）有限责任公司 | Waste-heat recovery method in making acid by using pyrite |
| CN104728825A (en) * | 2013-12-18 | 2015-06-24 | 招远市招金金合科技有限公司 | Low temperature exhaust heat utilization system and method |
-
2012
- 2012-12-06 CN CN2012206662810U patent/CN202945061U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103303876A (en) * | 2013-06-07 | 2013-09-18 | 瓮福（集团）有限责任公司 | Waste-heat recovery method in making acid by using pyrite |
| CN103278020A (en) * | 2013-06-28 | 2013-09-04 | 瓮福（集团）有限责任公司 | Blaster furnace slag waste heat recovery method for iron pyrite acid making device |
| CN104728825A (en) * | 2013-12-18 | 2015-06-24 | 招远市招金金合科技有限公司 | Low temperature exhaust heat utilization system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130522 Termination date: 20151206 |
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| EXPY | Termination of patent right or utility model |