CN108211705A - A kind of pitch desulfurizer and method - Google Patents
A kind of pitch desulfurizer and method Download PDFInfo
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- CN108211705A CN108211705A CN201810120231.4A CN201810120231A CN108211705A CN 108211705 A CN108211705 A CN 108211705A CN 201810120231 A CN201810120231 A CN 201810120231A CN 108211705 A CN108211705 A CN 108211705A
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- desulfurization
- tank
- liquid
- gas
- pitch
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/75—Multi-step processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/96—Regeneration, reactivation or recycling of reactants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/30—Alkali metal compounds
- B01D2251/304—Alkali metal compounds of sodium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/60—Inorganic bases or salts
- B01D2251/604—Hydroxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/80—Type of catalytic reaction
- B01D2255/802—Photocatalytic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
Abstract
The present invention relates to a kind of pitch desulfurizer and methods, including digester, regenerating tank, settling tank, stand tank, desulfurization pipe, desulfurization gas outlet are equipped with above the digester, the hypomere of desulfurization pipe is equipped with nozzle, nozzle is connected by pipeline with the outlet of high pressured water circuling pump, the entrance of high pressured water circuling pump is connected by pipeline with standing tank, using following steps：Chemical desulfurization, photocatalysis desulfurization：By after desulfurization gas, the residual air that generates enters by exhaust pipe in photocatalysis apparatus in the gas that generates of regeneration and infall process, the gas Jing Guo desulfurization twice is discharged into air by progress secondary desulfuration.The present invention is by chemistry and photocatalysis two-step desulfurization, desulfurization effect is apparent, and that contact area between principle of dynamics doctor solution and flue gas is utilized is big for digester, reaction effect is good, desulfurizing agent can recycle after regeneration, product is simple, can effectively be recycled according to actual conditions, will not cause secondary environmental pollution.
Description
Technical field
The present invention relates to bitumen treatment technical fields, and in particular to a kind of pitch desulfurizer and method.
Background technology
In the production process of asphalt base waterproofing material, need pitch and various modifying agent by different formulations, additive, fill out
Then material etc. is pumped to production line by pipeline, can generate a large amount of pitches in this process by techniques such as heating, stirrings
Cigarette, this flue gas not only has niff, but also which part compound is also harmful to health, such as bitumen flue gas
In the carcinogens such as the BaP, benzanthracene, the carbazole that contain, be equipped with dedusting in the preparation of asphalt base waterproofing material at present and set
It is standby, such as bag filter, it is discharged into air after bag filter, bitumen flue gas desulfurized step is that cloth bag removes at present
Dirt device removes large dust particle, and then with Wet Limestone Desulfurization, absorbent is cheap and easy to get, but capital construction overdraw is big, water consumption
Greatly, it is impossible to reuse, the calcium sulfate of generation is unstable, easy secondary volatilization sulfur dioxide, while calcium sulfate and calcium carbonate are not
Easily respectively, product cannot efficiently use.
Invention content
To overcome the deficiency, the purpose of the present invention is to provide a kind of pitch desulfurizer and method, simple in structure, energy
Enough reuse sodium ion, the calcium sulfate of output high quality.
The technical solution adopted by the present invention to solve the technical problems is：A kind of pitch desulfurizer, including digester, again
Raw tank, settling tank stand tank, and desulfurization pipe, desulfurization gas outlet are equipped with above the digester, and the hypomere of desulfurization pipe is equipped with nozzle,
Nozzle is connected by pipeline with the outlet of high pressured water circuling pump, and the entrance of high pressured water circuling pump is connected by pipeline with standing tank,
The lower end of the digester is equipped with desulfurization leakage fluid dram, and desulfurization leakage fluid dram is connected by pipeline with regenerating tank, and regenerating tank is equipped with the
Two liquid supplementation pipes, regeneration gas outlet, regenerating tank lower end are equipped with regeneration leakage fluid dram, and regeneration leakage fluid dram is connected by pipeline with settling tank,
The top of the settling tank is equipped with overflow port, and overflow port is connected by pipeline with standing tank, and settling tank upper end is equipped with sedimentation outlet
Mouthful, the lower end of settling tank is equipped with mud discharging mouth, and the upper end for standing tank is equipped with the first liquid supplementation pipe, and the lower end for standing tank is equipped with drain
Pipe.
Specifically, first liquid supplementation pipe, the second liquid supplementation pipe are connected with fluid infusion pump, and fluid infusion water valve is equipped with after fluid infusion.
Specifically, the desulfurization gas outlet, regeneration gas outlet, sedimentation gas outlet pass through exhaust pipe and photocatalysis apparatus phase
Even, the outlet of photocatalysis apparatus is equipped with air-introduced machine.
Specifically, the digester, regenerating tank, stand tank in be equipped with liquid level gauge.
Specifically, circulating-water valve is equipped between the nozzle and high pressured water circuling pump.
Specifically, the drain pipe is equipped with tapping valve, positive displacement pump.
A kind of pitch sulfur method, includes the following steps：
First, chemical desulfurization including sweetening process, regenerative process, recycles doctor solution；
1.1 sweetening process：Bitumen flue gas enters at a high speed the desulfurization pipe above digester from top to bottom after bag filter,
Doctor solution is sprayed into air-flow from bottom to top by high pressured water circuling pump by nozzle, and gas-liquid two-phase is made inversely to clash, works as gas-liquid two-phase
Kinetic energy when reaching balance, form the froth zone of a high turbulence, in froth zone, gas-liquid two-phase connects in high velocity turbulent flow contact
It touches that surface area is very big, and these contact surfaces are constantly updated rapidly, achievees the effect that be quickly cooled down and highly effective reaction,
Liquid after reaction enters in digester；
1.2 regenerative process：The liquid generated by sweetening process enters regenerating tank, adds in regenerated liquid in regenerating tank, regenerated liquid with
Liquid in regenerating tank carries out regenerative response, generates liquid mud mixture；
1.3 recycle doctor solution：Liquid mud mixture is discharged to by regeneration leakage fluid dram in settling tank, insoluble matter precipitation, on
Layer liquid is drained by overflow port and stands in tank, carries out desulfurization use again；
2nd, photocatalysis desulfurization：By after desulfurization gas, in the gas that generates of regeneration and infall process the residual air that generates by row
Tracheae enters in photocatalysis apparatus, carries out secondary desulfuration, the gas Jing Guo desulfurization twice is discharged into air.
Specifically, the doctor solution uses NaOH aqueous solutions, is started using soda ash, absorbs SO2。
Specifically, the regenerated liquid uses Ca (OH)2Aqueous solution, reaction regeneration sodium ion, formed NaOH aqueous solutions and
CaSO3Precipitation, NaOH aqueous solutions enter standing tank and recycle, and realize regeneration.
Specifically, according to the pH value for standing pot liquid, just supplement NaOH aqueous solutions, raising basicity are made into de- after reduction
Sulphur agent for desulfurization, is monitored to standing the liquid water quality in tank 4, when water quality is bad, replaces doctor solution.
The invention has the advantages that：The present invention passes through chemistry and photocatalysis two-step desulfurization, and desulfurization effect is apparent, and
Digester is utilized that contact area between principle of dynamics doctor solution and flue gas is big, and reaction effect is good, desulfurizing agent energy after regeneration
Enough to recycle, product is simple, can effectively be recycled according to actual conditions, will not cause secondary environmental pollution.
Description of the drawings
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is the structure diagram at the chemical desulfurization position of the present invention.
1 digester, 11 desulfurization pipes, 12 desulfurization gas outlets, 13 liquid level gauges, 2 regenerating tanks, 21 regeneration gas outlets, 22 liquid level gauges,
23 regeneration leakage fluid drams, 24 fluid infusion pump, 25 fluid infusion water valves, 3 settling tanks, 31 overflow ports, 32 sedimentation exhaust outlets, 33 mud discharging mouths, 4 stand
Tank, 41 liquid level gauges, 42 motor-driven valves, 43 positive displacement pumps, 44 fluid infusion pump, 45 fluid infusion water valves, 5 photocatalysis apparatus, 6 nozzles, 61 high pressures are followed
Ring water pump, 62 motor-driven valves, 7 air-introduced machines.
Specific embodiment
In conjunction with the accompanying drawings, the present invention is further explained in detail.
A kind of pitch desulfurizer as shown in Figure 1 and Figure 2 including digester 1, regenerating tank 2, settling tank 3, stands tank 4,
1 top of digester is equipped with desulfurization pipe 11, desulfurization gas outlet 12, and the hypomere of desulfurization pipe 11 is equipped with nozzle 6, and nozzle 6 passes through pipe
Road is connected with the outlet of high pressured water circuling pump 61, and the entrance of high pressured water circuling pump 61 is connected by pipeline with standing tank 4, described de-
The lower end of sulphur tank 1 is equipped with desulfurization leakage fluid dram 14, and desulfurization leakage fluid dram 14 is connected by pipeline with regenerating tank 2, and regenerating tank 2 is equipped with the
Two liquid supplementation pipes, regeneration gas outlet 21,2 lower end of regenerating tank are equipped with regeneration leakage fluid dram 23, and regeneration leakage fluid dram 23 passes through pipeline and sedimentation
Tank 3 is connected, and the top of the settling tank 3 is equipped with overflow port 31, and overflow port 31 is connected by pipeline with standing tank 4, on settling tank 3
End is equipped with sedimentation gas outlet 32, and the lower end of settling tank 3 is equipped with mud discharging mouth 33, and the upper end for standing tank 4 is equipped with the first liquid supplementation pipe,
The lower end for standing tank 4 is equipped with drain pipe.
Specifically, first liquid supplementation pipe, the second liquid supplementation pipe and fluid infusion pump 45（24）It is connected, fluid infusion pump 45（24）After be equipped with
Fluid infusion water valve 44（25）.
Specifically, the desulfurization gas outlet 13, regeneration gas outlet 21, sedimentation gas outlet 32 are filled by exhaust pipe and photocatalysis
It puts 5 to be connected, the outlet of photocatalysis apparatus 5 is equipped with air-introduced machine 7.
Specifically, the digester 1, regenerating tank 2, stand tank 4 in be equipped with liquid level gauge 13（22、41）.
Specifically, circulating-water valve 62 is equipped between the nozzle 6 and high pressured water circuling pump 61.
Specifically, the drain pipe is equipped with tapping valve 42, positive displacement pump 43.
Specifically, the photocatalysis apparatus 5 uses ultraviolet light+ozone or ultraviolet light+photochemical catalyst concerted reaction device.
A kind of pitch sulfur method, includes the following steps：
First, chemical desulfurization including sweetening process, regenerative process, recycles doctor solution；
1.1 sweetening process：Bitumen flue gas enters at a high speed the desulfurization pipe of 1 top of digester from top to bottom after bag filter
11, doctor solution is sprayed into air-flow from bottom to top by high pressured water circuling pump 61 by nozzle 6, and gas-liquid two-phase is made inversely to clash, works as gas
When the kinetic energy of liquid two-phase reaches balance, the froth zone of a high turbulence is formed, in froth zone, gas-liquid two-phase connects in high velocity turbulent flow
It touches, contact surface area is very big, and these contact surfaces are constantly updated rapidly, reaches and is quickly cooled down and highly effective reaction
Effect, the liquid after reaction enter in digester；
1.2 regenerative process：The liquid generated by sweetening process enters regenerating tank 2, adds in regenerated liquid in regenerating tank, regenerated liquid with
Liquid in regenerating tank 2 carries out regenerative response, generates liquid mud mixture；
1.3 recycle doctor solution：Liquid mud mixture is discharged to by regeneration leakage fluid dram 23 in settling tank 3, insoluble matter precipitation,
Supernatant liquid is drained by overflow port 31 and stands in tank 4, carries out desulfurization use again；
2nd, photocatalysis desulfurization：By after desulfurization gas, in the gas that generates of regeneration and infall process the residual air that generates by row
Tracheae enters in photocatalysis apparatus 5, carries out secondary desulfuration, the gas Jing Guo desulfurization twice is discharged into air.
Specifically, the doctor solution uses NaOH aqueous solutions, is started using soda ash, absorbs SO2, sweetening process is substantially chemical
Principle is：
Na2CO3+SO2→Na2SO3+CO2（Ⅰ）
2NaOH+SO2→Na2CO3+H2O （Ⅱ）
Na2CO3+SO2+H2O→NaHSO3（Ⅲ）
（Ⅰ）Formula starts reaction equation to absorb；
（Ⅱ）Formula be main reaction equation, PH ＞ 9（When alkalinity is higher）；
（Ⅲ）Formula is when alkalinity is reduced to neutral or even acid（5 ＜ PH ＜ 9）.
Specifically, the regenerated liquid uses Ca (OH)2Aqueous solution, reaction regeneration sodium ion, formed NaOH aqueous solutions and
CaSO3Precipitation, NaOH aqueous solutions enter standing tank and recycle, and realize regeneration, the basic principles of chemistry of regenerative process are：
2NaHSO3+Ca(OH)2→Na2SO3+CaSO3↓+2H2O （Ⅳ）
Na2SO3+Ca(OH)2→2NaOH+CaSO3↓ （Ⅴ）
At Ca (OH)2Slurries（Ca(OH)2Reach saturation situation）In, neutral NaHSO3It is reacted quickly with white lime so as to discharge
Go out [Na+], [SO subsequently generated3 2-] and continue with lime reaction, the calcium sulfite for reacting generation is slow in the form of hemihydrate
Slowly it precipitates, so as to make [Na+] regenerated, absorbing liquid is restored to SO2Absorbability, recycle, desulfurizing byproduct is
Calcium sulfite or calcium sulfate（After oxidation）, user can according to the needs of oneself, using different methods to byproduct at
Reason.
Specifically, according to the pH value for standing liquid in tank 4, just supplement NaOH aqueous solutions, raising basicity are made into de- after reduction
Sulphur agent for desulfurization, is monitored to standing the liquid water quality in tank 4, when water quality is bad, replaces doctor solution.
The present invention is not limited to the embodiment, anyone should learn that the structure made under the enlightenment of the present invention becomes
Change, the technical schemes that are same or similar to the present invention are each fallen within protection scope of the present invention.
The present invention be not described in detail technology, shape, construction part be known technology.
Claims (9)
1. a kind of pitch desulfurizer, it is characterised in that：Including digester, regenerating tank, settling tank, stand tank, the digester
Top is equipped with desulfurization pipe, desulfurization gas outlet, and the hypomere of desulfurization pipe is equipped with nozzle, and nozzle is gone out by pipeline and high pressured water circuling pump
Mouth is connected, and the entrance of high pressured water circuling pump is connected by pipeline with standing tank, and the lower end of the digester is equipped with desulfurization leakage fluid dram,
Desulfurization leakage fluid dram is connected by pipeline with regenerating tank, and regenerating tank is equipped with the second liquid supplementation pipe, regeneration gas outlet, and regenerating tank lower end is set
There is regeneration leakage fluid dram, regeneration leakage fluid dram is connected by pipeline with settling tank, and the top of the settling tank is equipped with overflow port, overflow port
It is connected by pipeline with standing tank, settling tank upper end is equipped with sedimentation gas outlet, and the lower end of settling tank is equipped with mud discharging mouth, the standing
The upper end of tank is equipped with the first liquid supplementation pipe, and the lower end for standing tank is equipped with drain pipe.
2. a kind of pitch desulfurizer according to claim 1, it is characterised in that：First liquid supplementation pipe, the second fluid infusion
Pipe is connected with fluid infusion pump, and fluid infusion water valve is equipped with after fluid infusion.
3. a kind of pitch desulfurizer according to claim 1, it is characterised in that：The desulfurization gas outlet, regeneration outlet
Mouth, sedimentation gas outlet are connected by exhaust pipe with photocatalysis apparatus, and the outlet of photocatalysis apparatus is equipped with air-introduced machine.
4. a kind of pitch desulfurizer according to claim 1, it is characterised in that：The digester, stands tank at regenerating tank
Inside it is equipped with liquid level gauge.
5. a kind of pitch desulfurizer according to claim 1, it is characterised in that：The nozzle and high pressured water circuling pump it
Between be equipped with circulating-water valve.
6. a kind of pitch desulfurizer, it is characterised in that：A kind of pitch sulfur method, includes the following steps：
First, chemical desulfurization including sweetening process, regenerative process, recycles doctor solution；
2nd, photocatalysis desulfurization：By after desulfurization gas, in the gas that generates of regeneration and infall process the residual air that generates by row
Tracheae enters in photocatalysis apparatus, carries out secondary desulfuration, the gas Jing Guo desulfurization twice is discharged into air.
7. a kind of pitch desulfurizer according to claim 6, it is characterised in that：The chemical desulfurization includes following step
Suddenly：
1.1 sweetening process：Bitumen flue gas enters at a high speed the desulfurization pipe above digester from top to bottom after bag filter,
Doctor solution is sprayed into air-flow from bottom to top by high pressured water circuling pump by nozzle, and gas-liquid two-phase is made inversely to clash, works as gas-liquid two-phase
Kinetic energy when reaching balance, form the froth zone of a high turbulence, in froth zone, gas-liquid two-phase connects in high velocity turbulent flow contact
It touches that surface area is very big, and these contact surfaces are constantly updated rapidly, achievees the effect that be quickly cooled down and highly effective reaction,
Liquid after reaction enters in digester；
1.2 regenerative process：The liquid generated by sweetening process enters regenerating tank, adds in regenerated liquid in regenerating tank, regenerated liquid with
Liquid in regenerating tank carries out regenerative response, generates liquid mud mixture；
1.3 recycle doctor solution：Liquid mud mixture is discharged to by regeneration leakage fluid dram in settling tank, insoluble matter precipitation, on
Layer liquid is drained by overflow port and stands in tank, carries out desulfurization use again.
8. a kind of pitch desulfurizer according to claim 7, it is characterised in that：The doctor solution is water-soluble using NaOH
Liquid is started using soda ash, absorbs SO2。
9. a kind of pitch desulfurizer according to claim 7, it is characterised in that：The regenerated liquid uses Ca (OH)2It is water-soluble
Liquid, reaction regeneration sodium ion form NaOH aqueous solutions and CaSO3Precipitation, NaOH aqueous solutions enter standing tank and recycle, realize
Regeneration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810120231.4A CN108211705A (en) | 2018-02-07 | 2018-02-07 | A kind of pitch desulfurizer and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810120231.4A CN108211705A (en) | 2018-02-07 | 2018-02-07 | A kind of pitch desulfurizer and method |
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| Publication Number | Publication Date |
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| CN108211705A true CN108211705A (en) | 2018-06-29 |
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ID=62670949
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810120231.4A Pending CN108211705A (en) | 2018-02-07 | 2018-02-07 | A kind of pitch desulfurizer and method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101716454A (en) * | 2009-12-17 | 2010-06-02 | 航天环境工程有限公司 | Process for desulphurizing and dedusting catalytic cracking regenerated smoke |
| CN103785288A (en) * | 2014-01-26 | 2014-05-14 | 北京诺曼斯佰环保科技有限公司 | Wet desulphurization tower and deep flue gas purification system |
| CN205055758U (en) * | 2015-09-11 | 2016-03-02 | 瓮福达州化工有限责任公司 | Washing tower |
| CN105999962A (en) * | 2016-07-12 | 2016-10-12 | 包禾欣 | Asphalt flue gas purification treatment equipment |
| CN206262350U (en) * | 2016-12-09 | 2017-06-20 | 清源天蓝（北京）环保科技有限公司 | Smoke-gas wet desulfurization equipment based on sodium carbonate |
-
2018
- 2018-02-07 CN CN201810120231.4A patent/CN108211705A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101716454A (en) * | 2009-12-17 | 2010-06-02 | 航天环境工程有限公司 | Process for desulphurizing and dedusting catalytic cracking regenerated smoke |
| CN103785288A (en) * | 2014-01-26 | 2014-05-14 | 北京诺曼斯佰环保科技有限公司 | Wet desulphurization tower and deep flue gas purification system |
| CN205055758U (en) * | 2015-09-11 | 2016-03-02 | 瓮福达州化工有限责任公司 | Washing tower |
| CN105999962A (en) * | 2016-07-12 | 2016-10-12 | 包禾欣 | Asphalt flue gas purification treatment equipment |
| CN206262350U (en) * | 2016-12-09 | 2017-06-20 | 清源天蓝（北京）环保科技有限公司 | Smoke-gas wet desulfurization equipment based on sodium carbonate |
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Application publication date: 20180629 |