CN1085187C - Process and apparatus for purifying raw gas of sulfuric acid - Google Patents
Process and apparatus for purifying raw gas of sulfuric acid Download PDFInfo
- Publication number
- CN1085187C CN1085187C CN99113614A CN99113614A CN1085187C CN 1085187 C CN1085187 C CN 1085187C CN 99113614 A CN99113614 A CN 99113614A CN 99113614 A CN99113614 A CN 99113614A CN 1085187 C CN1085187 C CN 1085187C
- Authority
- CN
- China
- Prior art keywords
- water
- tower
- interchanger
- packing
- purification
- Prior art date
- 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
Links
Landscapes
- Gas Separation By Absorption (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Treating Waste Gases (AREA)
Abstract
The present invention belongs to the technical field of the production of sulphuric acid, which relates to a technology and a device for removing acid fog and dust in sulphuric acid raw materials. The technology of the present invention is carried out in the device which is composed of a corrugated plate regular stuffing tower 1, a plate type heat exchanger 2, a circulating pump 3 and a circulating groove 4. The defogging rate and the dust removal rate are more than 99.9 %; the present invention has the advantages of little equipment investment, small pressure reduction, low energy consumption and small occupied area.
Description
The invention belongs to the gas washing in SA production technical field, relate to the purification process and the device of raw gas of sulfuric acid, relate in particular to technology and the device of removing acid mist and dust in the raw gas of sulfuric acid.
As everyone knows, the unstripped gas that is adopted in vitriolic production generally all derives from the roasting of sulfurous iron ore or the waste gas of non-ferrous metals smelting works, and no matter which unstripped gas all contains 0.1～10.0g/m
3About acid mist, 0.1～10g/m
3About the water vapor of dust and 10～20% (V/V%), must carry out just being sent to subsequent processing after the purifying treatment.At present, general production equipment all adopts the method for electric precipitation and electric demist, and this method exists very significant disadvantage: (1) facility investment is big, and a flue gas treatment capacity is 60000Nm
3The refining plant of/h, its facility investment expense are about about 1,000 ten thousand yuan of Renminbi, and (2) systemic resistance is big, is about the 600mmH2O post, thereby energy consumption is increased.(3) volume of equipment is big, and floor space is big, also needs attached high voltage supply system.
The objective of the invention is to disclose a kind of technology and device that purifies acid mist and dust in the raw gas of sulfuric acid, to overcome the above-mentioned shortcoming of existing in prior technology.
Design of the present invention is such:
With water is the washing, purifying medium, unstripped gas in packing tower with the water counter current contact, the purification of unstripped gas is carried out in the condensation process of water vapour, the water droplet that produces in the condensation process will be at first attached to the surface of acid mist particle and dust particle, the particle diameter of acid mist particle and dust particle can increase to 2.0～3.0 μ m by 0.5～1.0 μ m, the liquid film of inertial impaction filling surface repeatedly repeatedly can greatly improve demist and dust separating effect then.
According to above-mentioned design, the present invention has researched and developed a kind of technology and device that purifies acid mist and dust in the raw gas of sulfuric acid, will do detailed elaboration to the present invention by accompanying drawing below.
Fig. 1 is the schema of raw gas of sulfuric acid purifying method of the present invention.Among the figure:
1---packing tower
2---interchanger
3---recycle pump
4---circulation groove
The unstripped gas that contains acid mist and dust, its temperature is 60～70 ℃, at first enter the bottom of packed tower 1, with temperature from heat exchanger 2 be 20～40 ℃ purification medium-water counter current contacting, unstripped gas is cooled, part steam in the unstripped gas is condensed, and acid mist and dust are removed in unstripped gas and purification medium-water counter current contacting, unstripped gas after the purification is flowed out by the top of packed tower 1, be sent to rear operation, its sulphuric acid mist content can be less than 5mg/ standard m3, purifying rate can reach more than 99.9%, and dirt content also can be less than 5mg/ standard m3, purifying rate can reach 99.99%, the purification medium-water that has absorbed acid mist and dust is then flowed out by the bottom of packed tower 1, enters circulating slot 4, temperature is 30～60 ℃, and part is processed by the bottom of circulating slot 4 discharging decontaminated water, part by circulating pump 3 with water Be sent to heat exchanger 2, take away heat by cooling water, temperature is reduced to 20～40 ℃, and again enter filler 1 and recycle, Purification medium-water can enter system by the packed tower upper supplementary. Its process conditions are such: the unstripped gas temperature Be 60～70 ℃, the unstripped gas time of staying is 5～15 seconds, and the temperature that enters the circulatory mediator-water on absorption tower is 20～40 ℃, cooling water temperature is 15～30 ℃, and empty tower gas velocity is 1.0～2.0m/s, sprinkle density is 10～30m3/m
2·h。
The said technology of the present invention can be by packed tower 1, heat exchanger 2, circulating pump 3 and 4 structures of circulating slot Carry out in the device that becomes. Filler in the said packed tower 1 can preferably adopt corrugated plate regular packing, with poly-third Alkene or stainless steel are the 150X～250X type the best of material.
Said heat exchanger 2 can adopt the plate type heat exchanger with high heat transfer coefficient, to reduce the consumption of cooling water With the outlet temperature that reduces purification medium-water.
As seen from the above technical solution, the said method of the present invention has numerous advantages:
(1) good purification, demist rate can reach more than 99.9%, and dust removal efficiency can reach more than 99.99%;
(2) facility investment expense is low, and for identical treatment capacity, facility investment only is 25% of an electric removal apparatus;
(3) pressure drop is little, and energy consumption is low, process cost only be identical treatment capacity the electric precipitation method 25%;
(4) floor space is little, reaches effect same, only is 25% of electric precipitation method.
To relevant details of the present invention be further described by embodiment below.
Embodiment 1
Handle the smelting waste gas of non-ferrous metals smelting works with said technology of the present invention and device.
Processing parameter and equipment size are as follows:
Unstripped gas treatment capacity: 600m
3/ h
Unstripped gas temperature: 65 ℃
Unstripped gas particle concentration: 1.5g/m
3
Unstripped gas acid mist content: 1.5g/m
3
Unstripped gas water vapour content: 15% (v/v%)
Specific liquid rate: 20m
3/ m
2H
Purification medium-water temp: 40 ℃
Absorption tower: φ 400 * 14500 mm
Packed height: 5m * 2 are 10m altogether
Filler model: 250X Polypropylene Plate Corrugated Packing
Result is as follows:
Exhaust gas particle concentration: 0.1mg/ standard m
3Exhaust gas acid mist content: 0.1mg/ standard m
3
Pressure drop: 1.3Kpa
Claims (5)
1. the purification process of a raw gas of sulfuric acid is characterized in that:
(1) contains the unstripped gas of acid mist and dust, at first enter the bottom of packing tower (1), with purification medium-water counter current contact from interchanger (2), unstripped gas after the purification is flowed out by the top of packing tower (1), purification medium-the water that has absorbed acid mist and dust is then flowed out by the bottom of packing tower (1), enter circulation groove (4), water is sent to from interchanger (2), enter filler (1) once more after the reduction temperature and recycle by recycle pump (3);
(2) its processing condition are such: the unstripped gas residence time is 5～15 seconds, and the temperature that enters the circulatory mediator-water on absorption tower (1) is 20～40 ℃, and empty tower gas velocity is 1.0～2.0m/s, and specific liquid rate is 10～30m
3/ m
2H.
2. technology as claimed in claim 1 is characterized in that: part purification medium-water is by the bottom discharging of circulation groove (4), and part is sent to interchanger (2) by recycle pump (3) with water.
3. technology as claimed in claim 2 is characterized in that: purification medium-water can enter system by the upper supplementary of packing tower (1).
4. the purification process device of a raw gas of sulfuric acid, it is characterized in that: said device comprises packing tower (1), interchanger (2), recycle pump (3) and circulation groove (4):
Filler in the said packing tower (1) is a corrugated plate regular packing;
Said interchanger (2) is a plate-type heat exchanger.
5. device as claimed in claim 4 is characterized in that: said filler is that polypropylene or stainless steel are the 150X～250X type structured packing of material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99113614A CN1085187C (en) | 1999-04-07 | 1999-04-07 | Process and apparatus for purifying raw gas of sulfuric acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99113614A CN1085187C (en) | 1999-04-07 | 1999-04-07 | Process and apparatus for purifying raw gas of sulfuric acid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1236730A CN1236730A (en) | 1999-12-01 |
| CN1085187C true CN1085187C (en) | 2002-05-22 |
Family
ID=5276788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN99113614A Expired - Fee Related CN1085187C (en) | 1999-04-07 | 1999-04-07 | Process and apparatus for purifying raw gas of sulfuric acid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1085187C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101830443B (en) * | 2010-04-14 | 2011-06-15 | 清华大学 | Process for purifying sulfuric acid phase and hydriodic acid phase in iodine-sulfur cycle |
| CA2825883C (en) * | 2011-02-01 | 2019-04-09 | Linde Aktiengesellschaft | Process for removing contaminants from gas streams |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3326561A1 (en) * | 1983-07-22 | 1985-02-07 | Bayer Ag, 5090 Leverkusen | Process for treating used sulphuric acid |
| CN1056824A (en) * | 1990-05-29 | 1991-12-11 | 北京工业大学 | The process for purifying of dust, acid mist, acid gas mix waste gas |
| CN2168638Y (en) * | 1993-06-10 | 1994-06-15 | 吴康地 | acid mist gas-liquid separator |
-
1999
- 1999-04-07 CN CN99113614A patent/CN1085187C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3326561A1 (en) * | 1983-07-22 | 1985-02-07 | Bayer Ag, 5090 Leverkusen | Process for treating used sulphuric acid |
| CN1056824A (en) * | 1990-05-29 | 1991-12-11 | 北京工业大学 | The process for purifying of dust, acid mist, acid gas mix waste gas |
| CN2168638Y (en) * | 1993-06-10 | 1994-06-15 | 吴康地 | acid mist gas-liquid separator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1236730A (en) | 1999-12-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202876599U (en) | Purifying device of asphalt waste gas | |
| CN100364643C (en) | Method and device for absorbing, recovering and purifying organic from exhaust gas | |
| CN109911862B (en) | Gas-solid separation method and system for elemental sulfur in sulfur-containing tail gas | |
| CN102872671A (en) | Asphalt waste gas purifying method and device | |
| CN102049189A (en) | Method for purifying organic waste gas | |
| CN109264674A (en) | A kind of technique and system using flue gas during smelting extracting sulfuric acid | |
| CN114247255A (en) | Method and system for treating rectification tail gas in organic silicon production | |
| CN106474867A (en) | A kind of retracting device of organic exhaust gas and recovery method | |
| CN1085187C (en) | Process and apparatus for purifying raw gas of sulfuric acid | |
| CN109173650A (en) | A kind of quenching waste gas processing method and system | |
| CN203737036U (en) | Device for cooperatively reinforcing PM2.5 removing and deep utilization of flue gas residual heat | |
| CN210171208U (en) | Electrolytic aluminum flue gas deep purification device | |
| CN107537285A (en) | A kind of metallurgical off-gas acid-making waste water multi-layer circulation recycle system and method | |
| CN2732338Y (en) | Self-controlling waste gas purifying device | |
| CN207203800U (en) | Nitrogen-containing oxide fume treatment reuse means | |
| CN203540321U (en) | Device for recycling HCl and volatile organic compounds in gas | |
| CN114768512A (en) | CO for efficiently trapping secondary aerosol of absorbent2Absorption tower | |
| CN206152612U (en) | Waste gas recovery purifier | |
| CN103341274B (en) | In heat-engine plant wet desulfurization fume, moisture reclaims and gypsum rain controlling device and method | |
| CN212757294U (en) | Low-humidity circulating return air NMP recovery device | |
| CN212356995U (en) | High liquid-containing oil sludge waste treatment device | |
| CN209259731U (en) | A kind of desulfurization wastewater zero-discharge treatment system | |
| CN208031956U (en) | A kind of scrap rubber regenerating tank emission-control equipment | |
| CN112704994A (en) | Method and device for efficiently and selectively capturing products in inert tail gas | |
| CN112624236A (en) | System for desulfurization waste water evaporation treatment and evaporation product utilization |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |