CN208429865U - A kind of food-grade sulfuric acid production plant - Google Patents
A kind of food-grade sulfuric acid production plant Download PDFInfo
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- CN208429865U CN208429865U CN201820933070.6U CN201820933070U CN208429865U CN 208429865 U CN208429865 U CN 208429865U CN 201820933070 U CN201820933070 U CN 201820933070U CN 208429865 U CN208429865 U CN 208429865U
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- heat exchanger
- conversion zone
- drying chamber
- absorption tower
- screen pack
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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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- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
A kind of food-grade sulfuric acid production plant, including being sequentially connected the sulfur melting groove connect, sulfur furnace, pyrolysis oven and converter, sulfur furnace is also connected with air dryer, drier is cyclic annular drying chamber, sets air intake and air outlet slit on cyclic annular drying chamber, isolation board is set between air intake and air outlet slit, multiple oil water separators are located on the drying chamber, oil water separator includes filter cylinder, filtering material and screen pack, and it is filtering material between screen pack that the both ends of filter cylinder, which are screen pack,.This process units has the advantages that utilization efficiency of heat energy is high, quality of finished is good.
Description
Technical field
The utility model relates to gas washing in SA production technical fields, more particularly, to a kind of food-grade sulfuric acid production plant.
Background technique
According to the regulation of GB29205-2012 national standard, the sulfuric acid as food additives should be meet physical and chemical index,
Contact method produce and refine after 92 acid and 98 acid.
In the prior art, it is the suction using sulphur as raw material, through gas making, catalytic oxidation and sulfur trioxide that contact method, which prepares sulfuric acid,
It receives three phases and obtains finished product sulfuric acid.Have the following deficiencies: that a large amount of waste heat generated in 1) preparation cannot fill in the preparation process
Divide and utilizes；2) sulfuric acid cannot be fully absorbed the sulfur trioxide in flue gas, and then sulfur trioxide content is high in the exhaust gas being discharged, and exists
Pollute the hidden danger of environment；3) it melts to be passed through in sulphur in slot and is air-dried quality that is ineffective, and then influencing finished product.
Summary of the invention
The purpose of the utility model is to overcome disadvantages existing in the prior art, provide a kind of food-grade gas washing in SA production dress
It sets, which, which uses ring dryer and improve, is air-dried and filter effect, while converter is connect with heat exchanger, raising
Heat utilization rate, the technical solution adopted is that: a kind of food-grade sulfuric acid production plant, including being sequentially connected the sulfur melting groove connect, burning
Sulphur furnace, pyrolysis oven and converter, the sulfur furnace are also connected with air dryer, it is characterised in that: the drier is cyclic annular dry
Dry tank, it is described ring-type drying chamber on set air intake and air outlet slit, set isolation board between the air intake and air outlet slit,
Multiple oil water separators are located on the drying chamber, and the oil water separator includes filter cylinder, filtering material and screen pack, described
The both ends of filter cylinder are screen pack, are filtering material between the screen pack.
The technical characteristics of the utility model is also: the converter is five-part form converter, the outlet of third conversion zone
Road connects the smoke inlet on absorption tower I, and the gases exit line on the absorption tower I connects the gas access of the 4th conversion zone, the
The smoke inlet on the outlet conduit connection absorption tower II of five conversion zones, the gas vent connection emptying chimney on the absorption tower II；
The entrance of the outlet of first conversion zone and the second conversion zone is connected to heat exchanger I, the outlet of the second conversion zone and third conversion zone
Entrance is connected to heat exchanger II, and the outlet of the 4th conversion zone and the entrance of the 5th conversion zone are connected to heat exchanger III.
The technical characteristics of the utility model is also: heat exchanger I position high temperature superheater, heat exchanger II are pipe type heat transfer
Device, heat exchanger III include heat exchanger, further include the economizer connecting with heat exchanger.
The technical characteristics of the utility model is also: also setting filter between the pyrolysis oven and converter.
The technical characteristics of the utility model is also: the sulfur melting groove includes slot ontology and the mixing part that is arranged in slot ontology
Part sets collet on the inner wall of the slot ontology, and heat pipe is connected to the collet and is located in slot ontology.
The technical characteristics of the utility model is also: the collet is connect with boiler feedwater.
The utility model has the beneficial effects that: this process units is asked in view of the thermal energy in gas washing in SA production makes full use of
Topic will burn the energy heats boiler feedwater released in sulphur section, and row heat exchange absorbs the thermal energy that conversion zone is released again；To promote sulfuric acid
Purified treatment is dried to the air heated in sulphur is burnt in quality；To improve yield, reducing sulfur trioxide content in tail gas, this
The converter of process units uses double absorption formula；This process units has the advantages that utilization efficiency of heat energy is high, quality of finished is good.
Detailed description of the invention
Attached drawing 1 is the utility model main view, and 1 is sulfur melting groove, and 11 be steam inlet, and 12 be slot ontology, and 13 be stirring electricity
Machine, 14 be agitating shaft, and 15 be stirring blade, and 16 be collet, and 17 be heat pipe, and 18 be condensation-water drain, and 19 be blowdown valve, and 110 are
Sulphur entrance, 2 be sulfur furnace, and 21 be furnace body, and 22 be masonry, and 23 be sulfuring up mouth, and 24 be support, and 3 be air dryer, and 31 be empty
Gas entrance, 32 be air outlet slit, and 33 be cyclic annular drying chamber, and 34 be isolation board, and 35 be oil water separator, and 36 be adsorbent, and 37 are
Outlet strainer, 4 be pyrolysis oven, and 5 be converter, and 51 be heat exchanger I, and 52 be heat exchanger II, and 53 be heat exchanger III, and 6 be absorption tower
I, 7 be absorption tower II, and 8 be filter.
Specific embodiment
With reference to the accompanying drawing, specific embodiment of the present utility model is illustrated.The utility model discloses one kind
Food-grade sulfuric acid production plant, the process units include being sequentially connected the sulfur melting groove 1 connect, sulfur furnace 2, air dryer 3, pyrolysis
Furnace 4 and converter 5.The sulphur melted in sulfur melting groove 1 is delivered in sulfur furnace 2, and oxidation is carried out in sulfur furnace 2 and generates titanium dioxide
Sulphur gas, the sulfur dioxide gas are delivered to pyrolysis oven 4 and exchange heat, and the sulfur dioxide gas after heat exchange is delivered to converter 5
In, absorption tower sulfur dioxide absorption gas generation sulfuric acid, the thermal energy in conversion is fully utilized after heat exchanger exchanges heat.
Sulfur melting groove 1 includes slot ontology 12 and the mixing component being arranged in slot ontology 12, and mixing component includes being fixed on slot
Stirring motor 13 on ontology 12, stirring motor 13 are connect with agitating shaft 14, stirring blade 15 are installed on agitating shaft 14, by stirring
The stirring for mixing blade 15 accelerates the fusion process of sulphur.To make full use of the thermal energy in molten sulphur bracket groove ontology 12, slot ontology 12
Collet 16 is set on inner wall, heat pipe 17 is connected to collet 16 and is located in slot ontology 12, and collet 16 is connect with boiler feedwater, is melted in sulphur
The thermal energy released is used in the quick heating of boiler feedwater.
Air dryer 3 is ring dryer, including cyclic annular drying chamber 33, sets 31 He of air intake on cyclic annular drying chamber 33
Air outlet slit 32 sets the isolation board 34 for playing compartmentation, multiple oil water separators between air intake 31 and air outlet slit 32
35 are located on cyclic annular drying chamber 33, and the oil water separator 35 in the present embodiment includes filter cylinder, filtering material and screen pack, filter cylinder
Both ends be screen pack, be filtering material between screen pack.Air filter net 37 is set out on air outlet slit 32.Cyclic annular drying chamber 33
Inside also set adsorbent 36.The curved design of this ring dryer increases drying area, and oil water separator 35 can effectively be gone
Except the oil of air, raising is air-dried and clean-up effect.
Converter is five-part form converter, and the smoke inlet on the outlet conduit connection absorption tower I 6 of third conversion zone absorbs
The gases exit line of tower I 6 connects the gas access of the 4th conversion zone, and the outlet conduit of the 5th conversion zone connects absorption tower II 7
Smoke inlet, absorption tower II 7 gas vent connection emptying chimney；The entrance of the outlet of first conversion zone and the second conversion zone connects
It is connected to heat exchanger I 51, the outlet of the second conversion zone and the entrance of third conversion zone are connected to heat exchanger II 52, the 4th conversion zone
The entrance of outlet and the 5th conversion zone is connected to heat exchanger III 53.Heat exchanger I 51 in the present embodiment is high temperature superheater, heat exchange
Device II 52 is pipe heat exchanger, and it further includes the economizer connecting with heat exchanger that heat exchanger III 53, which includes heat exchanger,.It is transported to conversion
Sulfur dioxide gas temperature in device is 420 DEG C, after the first conversion zone, from the flue-gas temperature of the first conversion zone outlet output
It is 570 DEG C -590 DEG C, the flue-gas temperature because needing to be delivered to the second conversion zone inlet is 430 DEG C, corresponding setting heat exchanger I
51 carry out heat exchange processing, and such saturated vapor becomes superheated steam after high temperature superheater is handled and is conveyed to the component that need to do work,
Such as back pressure turbine, back pressure turbine acting is pushed, output electric energy is utilized for producer, remaining setting turns hot gas
Flue gas is subjected to heat exchange processing, and the thermal energy of acquisition is comprehensively utilized.
In the present embodiment, the entrance on absorption tower is located at the top on absorption tower, in absorption tower, setting below cloth acid gas spray port
Magnet ring, the acid mouth on absorption tower are located at the lower part on absorption tower.Absorption tower further includes the cloth acid tank connecting with absorption tower pipeline, cloth acid
The acid inlet and acid mouth on barrel road connection absorption tower.
Certainly, above description is not limitation of the utility model, and the utility model is also not limited to the example above, this skill
The variations, modifications, additions or substitutions that the those of ordinary skill in art field is made in the essential scope of the utility model, also belong to
In the protection scope of the utility model.
Claims (6)
1. a kind of food-grade sulfuric acid production plant, including being sequentially connected the sulfur melting groove connect, sulfur furnace, pyrolysis oven and converter, institute
It states sulfur furnace and is also connected with air dryer, it is characterised in that: the drier is cyclic annular drying chamber, is set on the ring-type drying chamber
Air intake and air outlet slit, set isolation board between the air intake and air outlet slit, multiple oil water separators are located at described
On drying chamber, the oil water separator includes filter cylinder, filtering material and screen pack, and the both ends of the filter cylinder are screen pack,
It is filtering material between the screen pack.
2. process units described in accordance with the claim 1, it is characterised in that: the converter is five-part form converter, and third turns
Change the smoke inlet on the outlet conduit connection absorption tower I of section, the gases exit line on the absorption tower I connects the 4th conversion zone
Gas access, the smoke inlet on the outlet conduit connection absorption tower II of the 5th conversion zone, the gas vent on absorption tower II connect row
Empty chimney；The entrance of the outlet of first conversion zone and the second conversion zone is connected to heat exchanger I, and the outlet of the second conversion zone and third turn
The entrance for changing section is connected to heat exchanger II, and the outlet of the 4th conversion zone and the entrance of the 5th conversion zone are connected to heat exchanger III.
3. process units according to claim 2, it is characterised in that: the heat exchanger I is high temperature superheater, heat exchanger II
For pipe heat exchanger, it further includes the economizer connecting with heat exchanger that heat exchanger III, which includes heat exchanger,.
4. process units described in accordance with the claim 1, it is characterised in that: also set filtering between the pyrolysis oven and converter
Device.
5. process units described in accordance with the claim 1, it is characterised in that: the sulfur melting groove includes slot ontology and is arranged in slot sheet
Mixing component in body sets collet on the inner wall of the slot ontology, and heat pipe is connected to the collet and is located in slot ontology.
6. process units according to claim 5, it is characterised in that: the collet is connect with boiler feedwater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820933070.6U CN208429865U (en) | 2018-06-15 | 2018-06-15 | A kind of food-grade sulfuric acid production plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820933070.6U CN208429865U (en) | 2018-06-15 | 2018-06-15 | A kind of food-grade sulfuric acid production plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208429865U true CN208429865U (en) | 2019-01-25 |
Family
ID=65100466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820933070.6U Active CN208429865U (en) | 2018-06-15 | 2018-06-15 | A kind of food-grade sulfuric acid production plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208429865U (en) |
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2018
- 2018-06-15 CN CN201820933070.6U patent/CN208429865U/en active Active
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