CN203683115U - Boiler system for production of polyaluminium chloride - Google Patents

Boiler system for production of polyaluminium chloride Download PDF

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Publication number
CN203683115U
CN203683115U CN201320753455.1U CN201320753455U CN203683115U CN 203683115 U CN203683115 U CN 203683115U CN 201320753455 U CN201320753455 U CN 201320753455U CN 203683115 U CN203683115 U CN 203683115U
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CN
China
Prior art keywords
boiler
pipeline
communicated
waste heat
flue gas
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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.)
Expired - Fee Related
Application number
CN201320753455.1U
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Chinese (zh)
Inventor
谷飞
魏小兵
邹鹏
王明冬
邹宏
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Chongqing Lanjie Guangshun Water Purification Materials Co Ltd
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Chongqing Lanjie Guangshun Water Purification Materials Co Ltd
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Priority to CN201320753455.1U priority Critical patent/CN203683115U/en
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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
    • 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 a boiler system for production of polyaluminium chloride. The boiler system comprises a conduction oil boiler, a waste heat boiler, a desulfurating and dedusting device and a high altitude chimney, wherein the conduction oil boiler is provided with a conduction oil inlet pipeline, a conduction oil outlet pipeline and a coal-fired flue gas pipeline; the waste heat boiler is provided with a water supply pipeline, a steam pipeline, a flue gas inlet pipeline and a flue gas outlet pipeline; the desulfurating and dedusting device is provided with a flue gas inlet pipeline and a flue gas outlet pipeline; the coal-fired flue gas pipeline of the conduction oil boiler is communicated with the flue gas inlet pipeline of the waste heat boiler, the flue gas outlet pipeline of the waste heat boiler is communicated with the flue gas inlet pipeline of the desulfurating and dedusting device, the flue gas outlet pipeline of the desulfurating and dedusting device is communicated with the high altitude chimney, and the water supply pipeline of the waste heat boiler is communicated with a pipeline network of tap water. The system disclosed by the utility model fully utilizes heat energy of fire coal and flue gas waste heat and greatly reduces consumption of fire coal for production of polyaluminium chloride, thereby achieving the purpose of saving energy and reducing consumption and lowering the production cost.

Description

Poly aluminium chloride is produced boiler systems
Technical field
The utility model belongs to poly aluminium chloride production technical field, relates to a kind of poly aluminium chloride and produces boiler systems.
Background technology
Poly aluminium chloride, is commonly called as water purification agent, has another name called polymerize aluminum chloride, is called for short poly-aluminium, english name PAC; It is the cationic inorganic polymer flocculant of a kind of poly-hydroxy, multinuclear complexing body, and solid phase prod outward appearance is sorrel, yellow or white solid powder, and its chemical molecular formula is [AL 2(OH) ncL 6-n] m(in formula, 1≤n≤5, m≤10), wherein m represents extent of polymerization, and n represents the neutral degree of PAC product, soluble in water, there is stronger bridge formation adsorptivity, in hydrolytic process, follow the physicsization such as electrochemistry, cohesion, absorption and precipitation to change, the final [AL that generates 2(OH) 3(OH) 3], thereby reach purification object.
The fundamental difference of poly aluminium chloride and traditional inorganic coagulant is that traditional inorganic coagulant is low molecular crystal salt, and the structure of poly aluminium chloride is made up of the changeable polynary carboxyl complex compound of form, flocculation sediment speed is fast, be suitable for pH value wide ranges, to pipe-line equipment non-corrosiveness, purifying water effect is obvious, can effectively prop up the heavy metal ion such as middle chromaticness SS, COD, BOD and arsenic, mercury that dewater, and this product is widely used in tap water, process water and sewage treatment area.
Poly aluminium chloride is divided into form and is divided into two kinds: a. liquid poly aluminium chloride is undried form, have and need not dilute, load and unload advantage easy to use, price is relatively cheap, shortcoming is traffic requirements tank car, and unit cost increases (solid per ton is equivalent to 2-3 ton liquid); B. solid poly aluminium chloride is dried form, has the advantage of convenient transportation, while not needing tank car, shortcoming to be use, also needs dilution, increases working strength.
The raw material of producing poly aluminium chloride mainly contains two large classes: a class is aluminum-containing mineral, comprises bauxite (gibbsite, boehmite, diaspore), clay, kaolin, alunite etc.; Another kind of is other aluminum-containing raw material, comprises metallic aluminium, aluminium scrap bits, grey aluminium, aluminium hydroxide, aluminum chloride, coal gangue, flyash etc.The method of producing at present poly aluminium chloride mainly contains metallic aluminium (comprising aluminium ash, lead skim) method, active aluminium hydroxide method, aluminium sesquioxide (comprising bauxitic clay, coal gangue etc.) method, crystal aluminum chloride method etc.
1. metallic aluminium method: adopt the raw material of the synthetic poly aluminium chloride of metallic aluminium method to be mainly the tankage that aluminium is processed, as aluminium bits, aluminium ash and aluminium slag etc.Under agitation slowly add according to a certain ratio hydrochloric acid to react by aluminium ash, make liquid aluminium polychloride through slaking polymerization, sedimentation, then through dilute filtration, concentrated, dry making.In technique, can be divided into 3 kinds of acid systems, alkaline process, neutralisation.Acid system is mainly that quality product is wayward with HCl; Alkaline process producting process difficulty is higher, and facility investment is large and alkali charge is large, and pH controls and takes raw material, and cost is higher; With maximum be neutralisation, as long as control proportioning well, generally can be up to state standards.
2. aluminium hydroxide method
The toxic substance content such as aluminium hydrate powder purity is higher, synthetic poly aluminium chloride heavy metal are low, generally adopt the acid-soluble production technique of heating and pressurizing.This technique is fairly simple, but the basicity of polymerize aluminum chloride of producing is lower, and therefore generally adopting aluminium hydroxide to heat, pressurization is acid-soluble adds in calcium aluminate breeze and two procedures.
3. aluminium sesquioxide method
Raw material containing aluminium sesquioxide mainly contains gibbsite, aluminium vanadine, kaolin, coal gangue etc.This production technique can be divided into two steps: the first step is to obtain crystal aluminum chloride, and second step is to obtain poly aluminium chloride by pyrolysis method or neutralisation.
4. aluminium chloride process
Adopting chlorination aluminium powder is Raw material processing poly aluminium chloride, and this method application is the most general.Available crystal aluminum chloride, in 170 ℃ of pyrolysis of seething with excitement, adds water cure polymerization, then through solidifying, dry making.
Liquid poly aluminium chloride is dried with spraying solid poly aluminium chloride or roller drying obtains, and is not only dried and needs heat energy, and the equipment such as reaction tank, modified pond, slag dryer also need heat energy.But the boiler systems of existing poly aluminium chloride production equipment is not high to the utilization ratio of heat energy, there is the very large energy saving space, and also not effectively processing of the coal-fired flue-gas that boiler systems is produced, particularly dust content does not reach emission standard.
Summary of the invention
In view of this, the purpose of this utility model is to provide a kind of poly aluminium chloride to produce boiler systems, coal heat type heat and fume afterheat are made full use of, unification provides heat energy to equipment such as roller dryer, reaction tank, modified pond, slag dryers, reduce poly aluminium chloride produces coal-fired consumption, make poly aluminium chloride production save energy and reduce the cost, environment-protecting clean.
For achieving the above object, the utility model provides following technical scheme:
Poly aluminium chloride of the present utility model is produced boiler systems, comprises heat conducting oil boiler, waste heat boiler, desulfation dust-extraction device and high-altitude chimney; Described heat conducting oil boiler is provided with thermal oil inlet duct, thermal oil outlet conduit and coal-fired flue-gas pipeline, waste heat boiler is provided with feedwater piping, steam-pipe, smoke inlet pipeline and exhanst gas outlet pipeline, and desulfation dust-extraction device is provided with smoke inlet pipeline and exhanst gas outlet pipeline; The coal-fired flue-gas pipeline of described heat conducting oil boiler and the smoke inlet pipeline communication of waste heat boiler, the exhanst gas outlet pipeline of waste heat boiler and the smoke inlet pipeline communication of desulfation dust-extraction device, the exhanst gas outlet pipeline of desulfation dust-extraction device is communicated with high-altitude chimney, and the feedwater piping of waste heat boiler is communicated with tap water pipe network.
Further, described desulfation dust-extraction device comprises dry collector, thionizer and wet electrical dust precipitator, the outlet of described dry collector is communicated with the smoke inlet of thionizer by blower fan, the exhanst gas outlet of described thionizer is communicated with the entrance of wet electrical dust precipitator, and the outlet of described wet electrical dust precipitator is communicated with high-altitude chimney.
Further, described desulfation dust-extraction device also comprises the heat recovery heat exchanger being arranged on before dry collector, the thermal medium entrance of described heat recovery heat exchanger is communicated with the exhanst gas outlet pipeline of waste heat boiler, thermal medium outlet is communicated with the entrance of dry collector, cold medium inlet is communicated with tap water pipe network, and cold media outlet is communicated with the feedwater piping of waste heat boiler.
Further, described dry collector is dry electric precipitation device, sack cleaner or electric-bag complex dust collector.
Further, the dust-laden discard solution discharge port of described wet electrical dust precipitator is communicated with thionizer.
The beneficial effects of the utility model are:
1) boiler systems of the present utility model arranges heat conducting oil boiler and waste heat boiler, coal heat type heat and fume afterheat are made full use of, unification provides heat energy to equipment such as roller dryer, reaction tank, modified pond, slag dryers, greatly reduce poly aluminium chloride and produce coal-fired consumption, reached the object of saving energy and reduce the cost, reducing production costs;
2) the utility model arranges dry collector and wet electrical dust precipitator completes flue gas ash removal jointly in desulfation dust-extraction device, in guaranteeing desulfuration efficiency, has improved dust-removal system efficiency, has reduced dust emission concentration, has reached the object that environment-protecting clean is produced;
3) heat recovery heat exchanger is set before dry collector, heat recovery heat exchanger further absorbs fume afterheat preheating for the water of steam occurs, energy-saving and cost-reducing.
Accompanying drawing explanation
In order to make the purpose of this utility model, technical scheme and beneficial effect clearer, the utility model provides following accompanying drawing to describe:
Fig. 1 is the structural representation that poly aluminium chloride of the present utility model is produced boiler systems.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail.
Fig. 1 is the structural representation that poly aluminium chloride of the present utility model is produced boiler systems, and as shown in the figure, poly aluminium chloride of the present utility model is produced boiler systems, comprises heat conducting oil boiler 1, waste heat boiler 2, desulfation dust-extraction device 3 and high-altitude chimney 4; Described heat conducting oil boiler 1 is provided with thermal oil inlet duct 11, thermal oil outlet conduit 12 and coal-fired flue-gas pipeline 13, waste heat boiler 2 is provided with feedwater piping 21, steam-pipe 22, smoke inlet pipeline 23 and exhanst gas outlet pipeline 24, and desulfation dust-extraction device 3 is provided with smoke inlet pipeline 31 and exhanst gas outlet pipeline 32; The coal-fired flue-gas pipeline 13 of described heat conducting oil boiler 1 is communicated with the smoke inlet pipeline 23 of waste heat boiler 2, the exhanst gas outlet pipeline 24 of waste heat boiler 2 is communicated with the smoke inlet pipeline 31 of desulfation dust-extraction device 3, the exhanst gas outlet pipeline 32 of desulfation dust-extraction device 3 is communicated with high-altitude chimney 4, and the feedwater piping 21 of waste heat boiler 2 is communicated with tap water pipe network.Heat conducting oil boiler 1 is drying drum heat supply by thermal oil, and the coal-fired flue-gas of heat conducting oil boiler 1 absorbs waste heat for generating steam through waste heat boiler 2, steam is reaction tank, modified pond and the heat supply of slag dryer, coal-fired flue-gas through desulfation dust-extraction device 3 desulfurization and dedustings, discharges through high-altitude chimney 4 after waste heat boiler 2; Coal heat type heat and fume afterheat are made full use of, greatly reduce poly aluminium chloride and produce coal-fired consumption, reached the object of saving energy and reduce the cost, reducing production costs.
In the present embodiment, described desulfation dust-extraction device 3 comprises dry collector 5, thionizer 6 and wet electrical dust precipitator 7, the outlet of described dry collector 5 is communicated with the smoke inlet of thionizer 6 by blower fan 8, the exhanst gas outlet of described thionizer 6 is communicated with the entrance of wet electrical dust precipitator 7, and the outlet of described wet electrical dust precipitator 7 is communicated with high-altitude chimney 4.Dry collector 5 and wet electrical dust precipitator 7 complete flue gas ash removal jointly, in guaranteeing desulfuration efficiency, have improved dust-removal system efficiency, have reduced dust emission concentration, have reached the object that environment-protecting clean is produced.Described dry collector 5 can be dry electric precipitation device, sack cleaner or electric-bag complex dust collector; The dust-laden discard solution discharge port of described wet electrical dust precipitator 7 is communicated with thionizer 6.
As further improvement of the utility model, described desulfation dust-extraction device 3 also comprises the heat recovery heat exchanger 9 being arranged on before dry collector 5, the thermal medium entrance of described heat recovery heat exchanger 9 is communicated with the exhanst gas outlet pipeline 24 of waste heat boiler 2, thermal medium outlet is communicated with the entrance of dry collector 5, cold medium inlet is communicated with tap water pipe network, and cold media outlet is communicated with the feedwater piping 21 of waste heat boiler 2.Heat recovery heat exchanger 9 further absorbs fume afterheat preheating for the water of steam occurs, energy-saving and cost-reducing.
Finally explanation is, above preferred embodiment is only unrestricted in order to the technical solution of the utility model to be described, although the utility model is described in detail by above preferred embodiment, but those skilled in the art are to be understood that, can make various changes to it in the form and details, and not depart from the utility model claims limited range.

Claims (5)

1. poly aluminium chloride is produced a boiler systems, it is characterized in that: comprise heat conducting oil boiler, waste heat boiler, desulfation dust-extraction device and high-altitude chimney; Described heat conducting oil boiler is provided with thermal oil inlet duct, thermal oil outlet conduit and coal-fired flue-gas pipeline, waste heat boiler is provided with feedwater piping, steam-pipe, smoke inlet pipeline and exhanst gas outlet pipeline, and desulfation dust-extraction device is provided with smoke inlet pipeline and exhanst gas outlet pipeline; The coal-fired flue-gas pipeline of described heat conducting oil boiler and the smoke inlet pipeline communication of waste heat boiler, the exhanst gas outlet pipeline of waste heat boiler and the smoke inlet pipeline communication of desulfation dust-extraction device, the exhanst gas outlet pipeline of desulfation dust-extraction device is communicated with high-altitude chimney, and the feedwater piping of waste heat boiler is communicated with tap water pipe network.
2. poly aluminium chloride according to claim 1 is produced boiler systems, it is characterized in that: described desulfation dust-extraction device comprises dry collector, thionizer and wet electrical dust precipitator, the outlet of described dry collector is communicated with the smoke inlet of thionizer by blower fan, the exhanst gas outlet of described thionizer is communicated with the entrance of wet electrical dust precipitator, and the outlet of described wet electrical dust precipitator is communicated with high-altitude chimney.
3. poly aluminium chloride according to claim 2 is produced boiler systems, it is characterized in that: described desulfation dust-extraction device also comprises the heat recovery heat exchanger being arranged on before dry collector, the thermal medium entrance of described heat recovery heat exchanger is communicated with the exhanst gas outlet pipeline of waste heat boiler, thermal medium outlet is communicated with the entrance of dry collector, cold medium inlet is communicated with tap water pipe network, and cold media outlet is communicated with the feedwater piping of waste heat boiler.
4. poly aluminium chloride according to claim 2 is produced boiler systems, it is characterized in that: described dry collector is dry electric precipitation device, sack cleaner or electric-bag complex dust collector.
5. poly aluminium chloride according to claim 2 is produced boiler systems, it is characterized in that: the dust-laden discard solution discharge port of described wet electrical dust precipitator is communicated with thionizer.
CN201320753455.1U 2013-11-26 2013-11-26 Boiler system for production of polyaluminium chloride Expired - Fee Related CN203683115U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320753455.1U CN203683115U (en) 2013-11-26 2013-11-26 Boiler system for production of polyaluminium chloride

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Application Number Priority Date Filing Date Title
CN201320753455.1U CN203683115U (en) 2013-11-26 2013-11-26 Boiler system for production of polyaluminium chloride

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Publication Number Publication Date
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105757645A (en) * 2016-03-18 2016-07-13 中国科学院广州能源研究所 Efficient low-grade residual heat resource utilization system for coal-fired power plant

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105757645A (en) * 2016-03-18 2016-07-13 中国科学院广州能源研究所 Efficient low-grade residual heat resource utilization system for coal-fired power plant
CN105757645B (en) * 2016-03-18 2018-01-16 中国科学院广州能源研究所 A kind of coal-burning power plant's low grade residual heat resources effective utilization system

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CF01 Termination of patent right due to non-payment of annual fee
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Granted publication date: 20140702

Termination date: 20171126