CN207734802U - A kind of flue gas purification system of low-temperature ammonium method production aluminium oxide - Google Patents
A kind of flue gas purification system of low-temperature ammonium method production aluminium oxide Download PDFInfo
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- CN207734802U CN207734802U CN201721627593.XU CN201721627593U CN207734802U CN 207734802 U CN207734802 U CN 207734802U CN 201721627593 U CN201721627593 U CN 201721627593U CN 207734802 U CN207734802 U CN 207734802U
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Abstract
The utility model discloses the flue gas purification systems that a kind of low-temperature ammonium method produces aluminium oxide, including sequentially connected deduster and desulfurizing tower, the deduster vertical column-type structure, bottom to be connected to flue, and top is connected to the desulfurizing tower；The desulfurizing tower is vertical column-type structure, include first grade desulfurizing portion, level-one gas storage portion, two-grade desulfurizing portion and the two level gas storage portion being isolated from each other successively from bottom to top, the first grade desulfurizing portion is connected to by level-one gas storage portion of institute with the two-grade desulfurizing portion, the two-grade desulfurizing portion is communicated with oxidation pond, the oxidation pond is connected to two level gas storage portion, and two level gas storage portion is connected to ammonia subsystem.Above structure component is few, it is simple in structure effectively to reduce manufacturing cost, above-mentioned deduster and desulfurizing tower, which are vertical type columnar structure, simultaneously can effectively reduce space, and to improve space availability ratio, in addition flue gas can effectively improve the purity of ammonia butt by dedusting and secondary desulfuration.
Description
Technical field
The flue gas that aluminium oxide is produced the utility model is related to technical field of environment protection equipment more particularly to a kind of low-temperature ammonium method is net
Change system.
Background technology
Currently, with the development of economy and social progress, environmental problem already becomes the hot spot that people increasingly pay close attention to
Problem especially extremely payes attention to the work of the environment protection treating of some blowdown enterprises.Thermal power plant is generally obtained with the burning of coal
Electric energy, to meet the needs of people are for electric energy, if dealt with improperly for the product (flue gas, combustion residue) after power generation
Serious environmental pollution will be caused, all is chiefly used in production and living institute if the product after power generation is used to produce
The material needed.
Flyash is the product after thermal power generation, using the product as raw material, is carried out in high-temperature reactor with ammonia sulfate crystal
The series of steps such as reaction is filtered by dissolution, separation, and crystallization, purification, ammonia divide, are filtered, washed, being aged, roasting generate oxygen
Change aluminium, wherein the ammonia sources of ammonia point reaction are in the flue gas of sintering reaction.The high-efficient purification of sintering flue gas advantageously reduces ammonia
Consumption, generates certain economic benefit, has preferable effect to amplifying production on a large scale.Product after reaction is due to using sulfuric acid
It neutralizes, recycling is ammonium sulfate, cannot effectively recycle ammonia, causes recycling value-added content of product to reduce, is unfavorable for large scale industry
Metaplasia is produced.
Therefore it provides a kind of flue gas purification system of low-temperature ammonium method production aluminium oxide, to simple in structure, floor space
It is small so that the purity of ammonia butt is high, just becomes those skilled in the art's urgent problem to be solved.
Utility model content
The purpose of this utility model is to provide a kind of flue gas purification system of low-temperature ammonium method production aluminium oxide, to structure letter
Single, floor space is small so that the purity of ammonia butt is high.
To achieve the goals above, the utility model provides a kind of flue gas purification system of low-temperature ammonium method production aluminium oxide,
Including sequentially connected deduster and desulfurizing tower, the deduster vertical column-type structure, bottom is connected to flue, top
It is connected to the desulfurizing tower；The desulfurizing tower is vertical column-type structure, includes the first grade desulfurizing being isolated from each other successively from bottom to top
Portion, level-one gas storage portion, two-grade desulfurizing portion and two level gas storage portion, the first grade desulfurizing portion pass through level-one gas storage portion of institute and the two level
Desulfurization portion is connected to, and the two-grade desulfurizing portion is communicated with oxidation pond, and the oxidation pond is connected to two level gas storage portion, the two level
Gas storage portion is connected to ammonia subsystem.
Preferably, it is sequentially arranged at intervals with distribution device in gas-fluid, filter device and Shui Chong from bottom to top in the deduster
Cleaning device, the distribution device in gas-fluid are connected to gas feed so that entering the gas dispersion in the deduster, the filtering
Device includes pallet and the layer of sand that is arranged above the pallet, the pallet towards on the end face of the distribution device in gas-fluid
Several ventholes are furnished with, the water flushing device includes nozzle, and the nozzle is set to above the layer of sand, and is supplied with the external world
Water end (W.E.) is connected to.
Preferably, the top in the first grade desulfurizing portion is connected to the top of the deduster, and bottom is communicated with level-one and follows
Ring pumps, and the primary cycle pump is connected to by the first valve with level-one gas storage portion bottom, and the primary cycle pump passes through second
Valve is connected to the bottom in two level gas storage portion, and the first grade desulfurizing portion is internally provided with level-one heat exchange coil, and the level-one is changed
Hot coil is communicated with steam or cooling water.
Preferably, the top in level-one gas storage portion is connected to by the top in two-grade desulfurizing portion described in pipeline.
Preferably, the bottom in the two-grade desulfurizing portion is communicated with secondary cycle pump, and the secondary cycle pump passes through third valve
It is connected to two level gas storage portion bottom, the secondary cycle pump is connected to oxidation pond, and the two-grade desulfurizing portion is internally provided with
Secondary heat exchange coil pipe, the secondary heat exchange coil pipe are communicated with steam or cooling water.
Preferably, the oxidation pond is communicated with air blower, and the inlet end of the air blower is communicated with gas distributor, described
Air blower makes air enter the oxidation pond through the gas distributor.
Preferably, air-introduced machine is communicated at the top of two level gas storage portion, the air-introduced machine makes two level gas storage portion
Internal gas enters the ammonia subsystem.
Flue gas purification system provided by the utility model, including sequentially connected deduster and desulfurizing tower, the dedusting
Device vertical column-type structure, bottom are connected to flue, and top is connected to the desulfurizing tower；The desulfurizing tower is vertical column-type
Structure includes first grade desulfurizing portion, level-one gas storage portion, two-grade desulfurizing portion and the two level gas storage portion being isolated from each other successively from bottom to top,
The first grade desulfurizing portion is connected to by level-one gas storage portion with the two-grade desulfurizing portion, and the two-grade desulfurizing portion is communicated with oxidation
Pond, the oxidation pond are connected to two level gas storage portion, and two level gas storage portion is connected to ammonia subsystem.Above structure includes
There are interconnected deduster and desulfurizing tower, the bottom of deduster to be connected to the pipeline of flue gas, the top of deduster and desulfurizing tower
Connection, deduster and desulfurizing tower are vertical type columnar structure, and wherein desulfurizing tower includes the level-one being isolated each other from bottom to top
Desulfurization portion, level-one gas storage portion, two-grade desulfurizing portion and two level gas storage portion, flue gas after deduster dedusting enter first grade desulfurizing portion into
Row desulfurization, the product after first grade desulfurizing enter level-one gas storage portion, and level-one gas storage portion passes through pipeline connection to two-grade desulfurizing portion and carries out
Secondary desulfuration, the product after secondary desulfuration enter oxidation pond and carry out redox reaction, the sulfuric acid generated at this time by the road
Ammonium, accessory products ammonia enter two level gas storage portion by the road, at the top of two level gas storage portion by be connected to ammonia subsystem thus into
Enter in ammonia subsystem.
Above structure component is few, simple in structure effectively to reduce manufacturing cost, while above-mentioned deduster and desulfurizing tower are equal
Space can be effectively reduced for vertical type columnar structure, to improve space availability ratio, in addition flue gas is by dedusting and secondary
Desulfurization can effectively improve the purity of ammonia butt.
Description of the drawings
Fig. 1 is the structural schematic diagram of flue gas purification system provided by the utility model.
Reference sign：
1 is deduster, and 11 be distribution device in gas-fluid, and 12 be pallet, and 13 be layer of sand, and 14 be water flushing device；
2 be flue；3 for the external world for water end (W.E.)；
4 be first grade desulfurizing portion, and 41 be level-one heat exchange coil；5 be level-one gas storage portion；
6 be two-grade desulfurizing portion, and 61 be secondary heat exchange coil pipe, and 7 be two level gas storage portion, and 71 be air-introduced machine；8 be oxidation pond, 81
It is air blower for gas distributor, 82；9 pump for primary cycle, and 91 be the first valve, and 92 be the second valve；10 pump for secondary cycle,
101 be third valve.
Specific implementation mode
The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, it is intended to for explaining the utility model, and should not be understood as to the utility model
Limitation.
Referring to FIG. 1, Fig. 1 is the structural schematic diagram of flue gas purification system provided by the utility model.
In a specific embodiment, flue gas purification system provided by the utility model, including sequentially connected remove
Dirt device 1 and desulfurizing tower, 1 vertical column-type structure of the deduster, bottom are connected to flue 2, top and the desulfurizing tower
Connection；The desulfurizing tower is vertical column-type structure, includes the first grade desulfurizing portion 4 being isolated from each other, level-one gas storage successively from bottom to top
Portion 5, two-grade desulfurizing portion 6 and two level gas storage portion 7, the first grade desulfurizing portion 4 are de- by level-one gas storage portion 5 and the two level
Sulphur portion 6 is connected to, and the two-grade desulfurizing portion 6 is communicated with oxidation pond 8, and the oxidation pond 8 is connected to two level gas storage portion 7, described
Two level gas storage portion 7 is connected to ammonia subsystem.Include interconnected deduster 1 and desulfurizing tower in above structure, deduster 1
Bottom is connected to the pipeline of flue gas, and the top of deduster 1 is connected to desulfurizing tower, and deduster 1 and desulfurizing tower are vertical type columnar knot
Structure, wherein desulfurizing tower include the first grade desulfurizing portion 4, level-one gas storage portion 5,6 and of two-grade desulfurizing portion being isolated each other from bottom to top
Two level gas storage portion 7, flue gas enter first grade desulfurizing portion 4 after 1 dedusting of deduster and carry out desulfurization, and the product after first grade desulfurizing enters
Level-one gas storage portion 5, level-one gas storage portion 5 carries out secondary desulfuration by pipeline connection to two-grade desulfurizing portion 6, after secondary desulfuration
Product by the road enter oxidation pond 8 carry out redox reaction, the ammonium sulfate generated at this time, accessory products ammonia by the road into
Enter two level gas storage portion 7,7 top of two level gas storage portion with ammonia subsystem by being connected to hence into ammonia subsystem.
Above structure component is few, simple in structure effectively to reduce manufacturing cost, while above-mentioned deduster 1 and desulfurizing tower are equal
Space can be effectively reduced for vertical type columnar structure, to improve space availability ratio, in addition flue gas is by dedusting and secondary
Desulfurization can effectively improve the purity of ammonia butt.
It is connected to it is to be appreciated that being realized by pipeline between above-mentioned each component, since flue gas has corrosivity, pipe
The selection of road and its connector is corrosion resistant high silicon stainless steel material, while (FRP increases desulfurizing tower inner-wall spraying FRP for fiber
Strong composite material, i.e. Fiber Reinforced Polymer/Plastic) glass flake, FRP glass flake materials should be sprayed
Or 304 stainless steels are used, avoid weak acid from corroding.
It should be pointed out that the basic principles of chemistry of the above process are to utilize the coagulation of deduster 1 preferentially by flue gas
Dust and a small amount of ammonium sulfate coagulation intercept, sulfide in gas and ammonia are completed in desulfurizing tower and is combined into sulfuric acid
Ammonium salt enters in solution, realizes that sulfite oxidation is ammonium sulfate in oxidation pond 8.Technological principle is completed in deduster 1 first
Dedusting condenses, and flue gas, which enters one section of desulfurizing tower and controls 80 DEG C or less most of sulfide and ammonia, is combined into ammonium sulfate into molten
In liquid, one section of purified flue gas enters two sections of desulfurizing towers, and 40 DEG C or less carry out sulfide and are combined into ammonium sulfate simultaneously with ammonia
Into in solution, gas is that 99% ammonia of dry basis purity is sent into ammonia subsystem after desulfurization；The solution deoxidation pond 8 of two sections of desulfurizing towers
Oxidation is carried out to form ammonium sulfate and enter ammonium sulfate evaporation and crystallization system.
It is further understood that, is sequentially arranged at intervals with distribution device in gas-fluid 11, filtering in the deduster 1 from bottom to top
Device and water flushing device 14, the distribution device in gas-fluid 11 are connected to gas feed so that entering the gas in the deduster 1
Body disperses, and the filter device includes pallet 12 and the layer of sand 13 that is arranged above the pallet 12, and the pallet 12 is towards institute
It states and is evenly equipped with several ventholes on the end face of distribution device in gas-fluid 11, the water flushing device 14 includes nozzle, the nozzle
It is set to 13 top of the layer of sand, and is connected to for water end (W.E.) 3 with the external world.In above structure, interval is set from bottom to top in deduster 1
It is equipped with distribution device in gas-fluid 11, filter device and water flushing device 14, distribution device in gas-fluid 11 is connected to realization with flue gas pipeline will
Flue gas effectively disperses, so that flue gas and fruit filtering means touch face bigger, further increase the efficiency for improving dedusting, simultaneously
Filter device includes pallet 12 and the layer of sand 13 that is arranged on pallet 12, and scattered flue gas is by the ventilation on pallet 12
Hole enters layer of sand 13 so that layer of sand 13 in flue gas dust and a small amount of ammonium sulfate coagulation be filtered, it is effectively real
Now the solid impurity in flue gas is filtered, ensures the purity of processing, water flushing device 14 by nozzle by extraneous water into
Row spray so that layer of sand 13 keep moisture state can effectively improve its adsorption capacity, be further ensured that the effect of purification.
It is to be appreciated that the diameter of sand uses the fine sand of 5-10mm in above-mentioned layer of sand 13, by using the diameter
Layer of sand 13 is so as to be further ensured that the effect of dedusting, so that the precision higher of post-processing.
Further, the top in the first grade desulfurizing portion 4 is connected to the top of the deduster 1, and bottom is communicated with one
Grade circulating pump 9, the primary cycle pump 9 are connected to by the first valve 91 with 5 bottom of level-one gas storage portion, the primary cycle pump
9 are connected to by the second valve 92 with the bottom in two level gas storage portion 7, and the first grade desulfurizing portion 4 is internally provided with level-one heat exchange plate
Pipe 41, the level-one heat exchange coil 41 are communicated with steam or cooling water.Above-mentioned first grade desulfurizing portion 4 and the top of deduster 1 connect
Logical, this kind of structure enables to flue gas that can effectively be transmitted, while the bottom in first grade desulfurizing portion 4 is communicated with primary cycle pump
9, the use of primary cycle pump 9 enables to flue gas to carry out Rapid Circulation, enabling further increases the place in first grade desulfurizing portion 4
Efficiency is managed, while primary cycle pump 9 is connected to by the first valve 91 with level-one gas storage portion 5, passes through the second valve 92 and two level gas storage portion 7
Connection, when needing first grade desulfurizing portion 4 being connected to level-one gas storage portion 5, the first valve 91 is opened, the second valve 92 closing, when need by
Second valve 92 is opened when first grade desulfurizing portion 4 is connected to two level gas storage portion 7, and the first valve 91 is closed, and is arranged inside first grade desulfurizing portion 4
Level-one heat exchange coil 41, by the way that level-one heat exchange coil 41 is connected steam or cooling water to realize inside to first grade desulfurizing portion 4
It is heated up or is cooled down, so as to realize the control to 4 internal temperature of first grade desulfurizing portion, 80 DEG C can be continuously maintained in
Hereinafter, the purity of purification can be further increased.
It should be pointed out that above-mentioned first valve 91, the second valve 92 and primary cycle pump 9 and are all made of high silicon stainless steel material
Material so as to effective anti-corrosion, and then reduces the maintenance cost of later stage device.Level-one heat exchange coil 41 should spray FRP glass squamas
Sheet material uses 304 stainless steels, and weak acid is avoided to corrode.
Further, the top in level-one gas storage portion 5 is connected to by the top in two-grade desulfurizing portion 6 described in pipeline.Pass through
Using pipeline to realize that level-one gas storage portion 5 is connected to the effective of two-grade desulfurizing portion 6, and level-one gas storage portion 5 is arranged in two level
The lower section in desulfurization portion 6 can effectively realize the transmission of gas under gravity, and the fall off gas upstream end in portion of two level is set
The treatment effect in two-grade desulfurizing portion 6 can be further ensured that in the bottom in two-grade desulfurizing portion 6 by setting.
It is to be appreciated that in order to ensure the corrosion resistance of pipeline, using high silicon stainless steel material so as to effectively carrying
The service life of high pipeline reduces the cost of later maintenance.
Further, the bottom in the two-grade desulfurizing portion 6 is communicated with secondary cycle pump 10, and the secondary cycle pump 10 passes through
Third valve 101 is connected to 7 bottom of two level gas storage portion, and the secondary cycle pump 10 is connected to oxidation pond 8, the two-grade desulfurizing
Portion 6 is internally provided with secondary heat exchange coil pipe 61, and the secondary heat exchange coil pipe 61 is communicated with steam or cooling water.Above-mentioned two-grade desulfurizing
The bottom in portion 6 is communicated with secondary cycle pump 10, and the use of secondary cycle pump 10 enables to flue gas to carry out Rapid Circulation so that energy
The treatment effeciency in two-grade desulfurizing portion 6 is enough further increased, while secondary cycle pump 10 is connected by third valve 101 and two level gas storage portion
Logical, secondary cycle pump 10 is connected to oxidation pond 8, secondary heat exchange coil pipe 61 is arranged inside two-grade desulfurizing portion 6, by changing two level
Hot coil 61 connects steam or cooling water to realize to being heated up or being cooled down inside two-grade desulfurizing portion 6, so as to realize
Control to 6 internal temperature of two-grade desulfurizing portion can be continuously maintained in 40 DEG C hereinafter, the pure of purification can be further increased
Degree.
It should be pointed out that above-mentioned third valve 101 and primary cycle pump 9 and are all made of high silicon stainless steel material, so as to
Enough effective anti-corrosions, and then reduce the maintenance cost of later stage device.Secondary heat exchange coil pipe 61 should spray FRP glass flakes material or adopt
With 304 stainless steels, weak acid is avoided to corrode.
Specifically understand, the oxidation pond 8 is communicated with air blower 82, and the inlet end of the air blower 82 is communicated with gas
Body distributor 81, the air blower 82 is so that air enters the oxidation pond 8 through the gas distributor 81.Above-mentioned oxidation pond 8
It is communicated with air blower 82, the inlet end of air blower 82 is provided with gas distributor 81, by air blower 82 by air through gas point
Cloth device 81 introduce oxidation pond 8 enable to the air inside oxidation pond 8 effectively to be supplemented, be further ensured that reaction it is normal into
Row, while enabling to the gas into oxidation pond 8 that can quickly and effectively be disperseed using gas distributor 81, thus into one
Step ensures the effect that oxidation pond 8 reacts.
The material of air blower 82 and gas distributor 81 in above structure is high silicon stainless steel material, so as to have
Anti-corrosion is imitated, and then reduces the maintenance cost of later stage device.
Specifically, the top in two level gas storage portion 7 is communicated with air-introduced machine 71, and the air-introduced machine 71 is so that two level storage
Gas inside gas portion 7 enters the ammonia subsystem.Make above by using air-introduced machine 71 to be connected to the top in two level gas storage portion 7
Body of bringing about the desired sensation can quickly and effectively enter in ammonia subsystem, to improve the efficiency of gas conveying.
The various embodiments described above are only preferred embodiments of the present invention, in the art, every to be based on this reality
With the changes and improvements in new technique scheme, should not exclude except the scope of protection of the utility model.
Claims (7)
1. a kind of flue gas purification system of low-temperature ammonium method production aluminium oxide, including sequentially connected deduster (1) and desulfurizing tower,
It is characterized in that, deduster (1) the vertical column-type structure, bottom is connected to flue (2), and top connects with the desulfurizing tower
It is logical；The desulfurizing tower is vertical column-type structure, includes the first grade desulfurizing portion (4) being isolated from each other, level-one gas storage successively from bottom to top
Portion (5), two-grade desulfurizing portion (6) and two level gas storage portion (7), the first grade desulfurizing portion (4) pass through level-one gas storage portion (5) and institute
Two-grade desulfurizing portion (6) connection is stated, the two-grade desulfurizing portion (6) is communicated with oxidation pond (8), the oxidation pond (8) and the two level
Gas storage portion (7) is connected to, and two level gas storage portion (7) is connected to ammonia subsystem.
2. flue gas purification system according to claim 1, which is characterized in that in the deduster (1) from bottom to top successively
It is arranged at intervals with distribution device in gas-fluid (11), filter device and water flushing device (14), the distribution device in gas-fluid (11) and gas
Body inlet communication to enter the gas dispersion in the deduster (1), and the filter device includes that pallet (12) and setting exist
Layer of sand (13) above the pallet (12), the pallet (12) is towards being evenly equipped on the end face of the distribution device in gas-fluid (11)
Several ventholes, the water flushing device (14) includes nozzle, and the nozzle is set to above the layer of sand (13), and with it is outer
Boundary is connected to for water end (W.E.) (3).
3. flue gas purification system according to claim 2, which is characterized in that the top of the first grade desulfurizing portion (4) and institute
The top connection of deduster (1) is stated, bottom is communicated with primary cycle pump (9), and the primary cycle pump (9) passes through the first valve
(91) it is connected to level-one gas storage portion (5) bottom, the primary cycle pump (9) passes through the second valve (92) and the two level gas storage
The bottom in portion (7) is connected to, and the first grade desulfurizing portion (4) is internally provided with level-one heat exchange coil (41), the level-one heat exchange coil
(41) steam or cooling water are communicated with.
4. flue gas purification system according to claim 3, which is characterized in that pass through at the top of level-one gas storage portion (5)
The top of two-grade desulfurizing portion (6) described in pipeline is connected to.
5. flue gas purification system according to claim 4, which is characterized in that the bottom of the two-grade desulfurizing portion (6) is connected to
There is secondary cycle to pump (10), the secondary cycle pump (10) is connected by third valve (101) and two level gas storage portion (7) bottom
Logical, the secondary cycle pump (10) is connected to oxidation pond (8), and the two-grade desulfurizing portion (6) is internally provided with secondary heat exchange coil pipe
(61), the secondary heat exchange coil pipe (61) is communicated with steam or cooling water.
6. flue gas purification system according to claim 5, which is characterized in that the oxidation pond (8) is communicated with air blower
(82), the inlet end of the air blower (82) is communicated with gas distributor (81), and the air blower (82) is so that described in air warp
Gas distributor (81) enters the oxidation pond (8).
7. flue gas purification system according to claim 6, which is characterized in that the top in two level gas storage portion (7) is connected to
There is air-introduced machine (71), the air-introduced machine (71) is so that the gas of two level gas storage portion (7) inside enters the ammonia subsystem.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721627593.XU CN207734802U (en) | 2017-11-29 | 2017-11-29 | A kind of flue gas purification system of low-temperature ammonium method production aluminium oxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721627593.XU CN207734802U (en) | 2017-11-29 | 2017-11-29 | A kind of flue gas purification system of low-temperature ammonium method production aluminium oxide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207734802U true CN207734802U (en) | 2018-08-17 |
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ID=63116357
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721627593.XU Active CN207734802U (en) | 2017-11-29 | 2017-11-29 | A kind of flue gas purification system of low-temperature ammonium method production aluminium oxide |
Country Status (1)
| Country | Link |
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| CN (1) | CN207734802U (en) |
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2017
- 2017-11-29 CN CN201721627593.XU patent/CN207734802U/en active Active
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