CN207734828U - The processing system of desulfurization waste liquor produced by a kind of coke-stove gas wet oxidation desulfurization - Google Patents
The processing system of desulfurization waste liquor produced by a kind of coke-stove gas wet oxidation desulfurization Download PDFInfo
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- CN207734828U CN207734828U CN201721804425.3U CN201721804425U CN207734828U CN 207734828 U CN207734828 U CN 207734828U CN 201721804425 U CN201721804425 U CN 201721804425U CN 207734828 U CN207734828 U CN 207734828U
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Abstract
The utility model is related to a kind of processing systems of desulfurization waste liquor produced by coke-stove gas wet oxidation desulfurization, including coke oven gas desulfurization system, flue gases of cock oven system for desulfuration and denitration, it is equipped with sodium carbonate slurry tank at the top of the flue gases of cock oven desulfurizing tower of flue gases of cock oven system for desulfuration and denitration, sodium carbonate slurries are out of flue gases of cock oven desulfurizing tower top spray to tower, the desulfurization waste liquor pipeline of coke oven gas desulfurization system is equipped with filter, the filter rear slurry pipe of filter outlet returns to coke oven gas desulfurization system, the desulfurization waste liquor pipeline of filter outlet is connect with flue gases of cock oven desulfurizing tower, or it is connect with sodium carbonate slurry tank at the top of desulfurizing tower.The utility model efficiently uses dissolved ammonia and free ammonia progress denitration in the desulfurization waste liquor of coke-stove gas wet oxidation desulfurization generation, reduces NH in denitrification process3Addition.Small investment, construction cost is low, and operating cost is low, flexible operation mode, and environment protecting is good.
Description
Technical field
The utility model is related to the processing of desulphurization waste liquid of coke oven gas, more particularly to a kind of coke-stove gas wet oxidation process is de-
The processing system of desulfurization waste liquor produced by sulphur.
Background technology
The hydrogen sulfide contained in coal gas is a kind of harmful substance.Coal gas without desulfurization is for steel-making and civil time, not only
The quality of steel can be reduced, and the sulfur dioxide meeting welding generated that burns, influence the health of people.Therefore, metallurgical to meet
The needs of industry, the pollution after reduction gas-fired to air, it is necessary to which the hydrogen sulfide in coal gas is removed.With HPF, PDS,
The quinones ferro-cobalt class composite catalyst such as ZL is the coke-stove gas wet oxidation desulfurization technique of representative, is China's coking industry oneself
Exploitation, the coal gas desulfurization new process with entirely autonomous intellectual property.The technique is with desulfuration and decyanation is efficient, is not required to exogenously added alkali
The advantages that source, relatively low investment and operating cost, thus be applied widely in China's coking industry.But the sulfur removal technology is current
It is still not perfect：The waste liquid generated in sweetening process lacks more perfect treatment process, be easy to cause new environmental pollution.Therefore,
The important environmental issue that is treated as us and must pay close attention to of desulfurization waste liquor.Desulfurization waste liquor processing method has desulfurization at present
Waste liquid directly returns and converts coking coal, desulfurization waste liquor salt extraction and desulfurization waste liquor relieving haperacidity.But desulfurization waste liquor is returned and is converted in coking coal to behaviour
Make environmental pollution and corrodes larger.Desulfurization waste liquor salt extraction technique certainly will lead to sulphur cyanogen since rhodanate market will be gradually saturated
Hydrochlorate price drops, investment landscape is poor, and can be involved in the problems, such as environmental pollution.
Invention content
The technical problem to be solved by the utility model is to provide taken off produced by a kind of coke-stove gas wet oxidation desulfurization
The processing system of sulphur waste liquid, solves that the toxicity that generates in sweetening process is big, intractable wastewater problem, small investment, construction cost
Low, operating cost is low, flexible operation mode, and environment protecting is good.
To achieve the above object, the utility model is realized using following technical scheme：
The processing system of desulfurization waste liquor produced by a kind of coke-stove gas wet oxidation desulfurization, including coke oven gas desulfurization system
The flue gases of cock oven desulfurizing tower top of system, flue gases of cock oven system for desulfuration and denitration, flue gases of cock oven system for desulfuration and denitration is equipped with carbon
Sour sodium slurry tank, sodium carbonate slurries are out of flue gases of cock oven desulfurizing tower top spray to tower, the desulfurization of coke oven gas desulfurization system
Waste-solution line is equipped with filter, and the filter rear slurry pipe of filter outlet returns to coke oven gas desulfurization system, filter outlet
Desulfurization waste liquor pipeline is connect with flue gases of cock oven desulfurizing tower, or is connect with sodium carbonate slurry tank at the top of desulfurizing tower.
The desulfurization waste liquor pipeline of the coke oven gas desulfurization system by coke oven gas desulfurization system doctor solution circulating pump
Exit or the stillness of night pump exit draw.
The desulfurization waste liquor pipeline of the filter outlet is directly connect with desulfurizing tower, or through Liqiud-gas mixing device and coke oven cigarette
It is connect with desulfurizing tower after road air pipe connection.
The Liqiud-gas mixing device includes the mixer with desulfurization waste liquor pipeline and flue gases of cock oven piping connection, mixing
Device outlet connection desulfurizing tower entrance.
The Liqiud-gas mixing device includes the mixer of desulfurization waste liquor pipeline and flue gases of cock oven piping connection, mixer
Outlet connection claus reaction device, claus reaction device outlet connection desulfurizing tower entrance.
Compared with prior art, the utility model has the beneficial effects that：
Desulphurization waste liquid of coke oven gas is introduced into the processing of flue gases of cock oven system for desulfuration and denitration, coke-stove gas by the utility model
Desulfurization waste liquor is sprayed onto in 210~280 DEG C of flue gases of cock oven, and desulfurization waste liquor is by thermal decomposition ammonia, hydrogen sulfide and dry powder.
Ammonia is mixed with flue gases of cock oven, and the denitration reaction for participating in flue gases of cock oven enters dust-extraction unit processing, and the utility model is effective
Dissolved ammonia and free ammonia in the desulfurization waste liquor generated using coke-stove gas wet oxidation desulfurization carry out denitration, reduce denitration
NH in journey3Addition.Small investment, construction cost is low, and operating cost is low, flexible operation mode, and environment protecting is good.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model embodiment 1.
Fig. 2 is the structural schematic diagram of the utility model embodiment 2.
Fig. 3 is the structural schematic diagram of the utility model embodiment 3.
Fig. 4 is the structural schematic diagram of the utility model embodiment 4.
In figure：Coke oven gas desulfurization system 1, flue gases of cock oven system for desulfuration and denitration 2, doctor solution circulating pump 3, coke oven flue
Desulfurization tower 4, de-dusting de-nitration integrated 5, sodium carbonate slurry tank 6, filter 7, mixer 8, claus reaction device 9.
Specific implementation mode
Specific embodiment of the present utility model is further illustrated below in conjunction with the accompanying drawings：
Embodiment 1
See Fig. 1, the processing system of desulfurization waste liquor produced by a kind of coke-stove gas wet oxidation desulfurization, including coke-stove gas
Desulphurization system 1, flue gases of cock oven system for desulfuration and denitration 2.
Road is taken in the exit of the doctor solution circulating pump 3 of coke oven gas desulfurization system 1, doctor solution is drawn and is used as desulfurization
Waste liquid；Desulfurization waste liquor pipeline is equipped with filter 7, and the filter rear slurry pipe that filter 7 exports returns to coke oven gas desulfurization system 1,
The desulfurization waste liquor pipe that filter 7 exports is directly connected to flue gases of cock oven desulfurizing tower 4.
Desulfurization waste liquor is sprayed onto in flue gases of cock oven desulfurizing tower 4, and 4 top of flue gases of cock oven desulfurizing tower is equipped with sodium carbonate slurries
Slot 6, sodium carbonate slurries are out of flue gases of cock oven desulfurizing tower 4 top spray to tower.
Desulfurization waste liquor evaporates rapidly in 210~280 DEG C of flue gases of cock oven, and desulfurization waste liquor is decomposed thermally to form xeraphium
Material is collected through dust-extraction unit；Hydrogen sulfide in desulfurization waste liquor is after evaporation forms hydrogen sulfide gas, the sodium carbonate that is desulfurized in tower
Slurries spray absorber；Dissolved ammonia and free ammonia in desulfurization waste liquor form ammonia through evaporation, are mixed with flue gases of cock oven, participate in burnt
The denitration reaction of stove flue gas forms nitrogen and water under denitrating catalyst effect.
Embodiment 2
See Fig. 2, the processing system of desulfurization waste liquor produced by a kind of coke-stove gas wet oxidation desulfurization, including coke-stove gas
Desulphurization system 1, flue gases of cock oven system for desulfuration and denitration 2.
Road is taken in the exit of the doctor solution circulating pump 3 of coke oven gas desulfurization system 1, doctor solution is drawn and is used as desulfurization
Waste liquid；Desulfurization waste liquor pipeline is equipped with filter 7, and the filter rear slurry pipe that filter 7 exports returns to coke oven gas desulfurization system 1,
The desulfurization waste liquor pipe that filter 7 exports connects mixer 8, and the outlet of mixer 8 is connected to flue gases of cock oven desulfurizing tower 4.Coke oven cigarette
Desulfurization tower 4 top in road is equipped with sodium carbonate slurry tank 6, and sodium carbonate slurries are out of flue gases of cock oven desulfurizing tower 4 top spray to tower.
Desulfurization waste liquor is sprayed by the flusher at 8 top of mixer, and 210~280 DEG C of flue gases of cock oven is passed through mixing
Device 8；Desulfurization waste liquor evaporates rapidly in mixer 8, enters in flue gases of cock oven desulfurizing tower 4 in company with flue gases of cock oven.Desulfurization is useless
Liquid is decomposed thermally to form dry powder and is collected through dust-extraction unit；Hydrogen sulfide in desulfurization waste liquor forms hydrogen sulfide gas through evaporation
Afterwards, the sodium carbonate slurries spray absorber being desulfurized in tower, dissolved ammonia and free ammonia in desulfurization waste liquor form ammonia through evaporation, with
Flue gases of cock oven mixes, and participates in the denitration reaction of flue gases of cock oven, and nitrogen and water are formed under denitrating catalyst effect.
Embodiment 3
See Fig. 3, the processing system of desulfurization waste liquor produced by a kind of coke-stove gas wet oxidation desulfurization, including coke-stove gas
Desulphurization system 1, flue gases of cock oven system for desulfuration and denitration 2.
Road is taken in the exit of the doctor solution circulating pump 3 of coke oven gas desulfurization system 1, doctor solution is drawn and is used as desulfurization
Waste liquid；Desulfurization waste liquor pipeline is equipped with filter 7, and the filter rear slurry pipe that filter 7 exports returns to coke oven gas desulfurization system 1.
4 top of flue gases of cock oven desulfurizing tower is equipped with sodium carbonate slurry tank, and the desulfurization waste liquor pipe that filter 7 exports connects sodium carbonate slurry tank
6, desulfurization waste liquor and sodium carbonate slurries are mixed to form mixed solution, mixed solution by 4 top spray of flue gases of cock oven desulfurizing tower with
Flue gas contacts；Desulfurization waste liquor evaporates rapidly in 210~280 DEG C of flue gases of cock oven, and desulfurization waste liquor is decomposed thermally to form dry
Dry powder, is collected through dust-extraction unit；Dissolved ammonia and free ammonia in desulfurization waste liquor form ammonia through evaporation, mixed with flue gases of cock oven
It closes, participates in the denitration reaction of flue gases of cock oven, nitrogen and water are formed under denitrating catalyst effect.
Embodiment 4
See Fig. 4, the processing system of desulfurization waste liquor produced by a kind of coke-stove gas HPF wet oxidation desulfurizations, including coke oven
Coal gas desulfurization system 1, flue gases of cock oven system for desulfuration and denitration 2.The coke oven flue desulfurization of flue gases of cock oven system for desulfuration and denitration 2
4 top of tower is equipped with sodium carbonate slurry tank 6, and sodium carbonate slurries are out of flue gases of cock oven desulfurizing tower 4 top spray to tower.
Road is taken in the exit of the doctor solution circulating pump 3 of coke oven gas desulfurization system 1, doctor solution is drawn and is used as desulfurization
Waste liquid；Filtered desulfurization waste liquor pipe connects mixer 8, and desulfurization waste liquor is sprayed onto in mixer 8, while by 210~280 DEG C
Flue gases of cock oven is also passed into mixer 8；Desulfurization waste liquor evaporates rapidly in mixer 8, and desulfurization waste liquor is decomposed thermally to form
Dry powder, the hydrogen sulfide in desulfurization waste liquor are mixed into claus reaction after evaporation forms hydrogen sulfide gas with flue gas
Device 9, hydrogen sulfide and sulfur dioxide gas precursor reactant generate sulphur simple substance in reactor；9 exiting flue gas of claus reaction device enters coke
In stove flue gas desulfurization tower 4, by the sodium carbonate slurries spray absorber in flue gases of cock oven desulfurizing tower 4, due in former flue gas
Sulfur dioxide part is reacted, and can also reduce the dosage of sodium carbonate slurries here.Dissolved ammonia in desulfurization waste liquor and free ammonia
Ammonia is formed through evaporation, is mixed with flue gases of cock oven, participates in the denitration reaction of flue gases of cock oven.
HPF desulfurization waste liquors are that a kind of toxicity that coal chemical enterprise generates in HPF method sweetening processes is big, intractable waste water,
The utility model is combined HPF desulfurization waste liquors with fume desulfuring and denitrifying, efficiently solves the problems, such as this.
Described above is only the basic principle of the utility model, is not imposed any restrictions to the utility model, every foundation
The utility model carries out it equivalent variations and modification, within the scope of the art of this patent protection scheme.
Claims (5)
1. the processing system of desulfurization waste liquor produced by a kind of coke-stove gas wet oxidation desulfurization, which is characterized in that including coke oven
Coal gas desulfurization system, flue gases of cock oven system for desulfuration and denitration, the flue gases of cock oven desulfurizing tower of flue gases of cock oven system for desulfuration and denitration
Top is equipped with sodium carbonate slurry tank, and sodium carbonate slurries are out of flue gases of cock oven desulfurizing tower top spray to tower, coke oven gas desulfurization
The desulfurization waste liquor pipeline of system is equipped with filter, and the filter rear slurry pipe of filter outlet returns to coke oven gas desulfurization system, mistake
The desulfurization waste liquor pipeline of filter outlets is connect with flue gases of cock oven desulfurizing tower, or is connect with sodium carbonate slurry tank at the top of desulfurizing tower.
2. the processing system of desulfurization waste liquor produced by a kind of coke-stove gas wet oxidation desulfurization according to claim 1,
It is characterized in that, the desulfurization waste liquor pipeline of the coke oven gas desulfurization system is recycled by the doctor solution of coke oven gas desulfurization system
The exit of pump or the exit of stillness of night pump are drawn.
3. the processing system of desulfurization waste liquor produced by a kind of coke-stove gas wet oxidation desulfurization according to claim 1,
It is characterized in that, the desulfurization waste liquor pipeline of the filter outlet is directly connect with desulfurizing tower, or through Liqiud-gas mixing device and coke
It is connect with desulfurizing tower after stove flue gas piping connection.
4. the processing system of desulfurization waste liquor produced by a kind of coke-stove gas wet oxidation desulfurization according to claim 3,
It is characterized in that, the Liqiud-gas mixing device includes the mixer with desulfurization waste liquor pipeline and flue gases of cock oven piping connection,
Mixer outlet connects desulfurizing tower entrance.
5. the processing system of desulfurization waste liquor produced by a kind of coke-stove gas wet oxidation desulfurization according to claim 3,
It is characterized in that, the Liqiud-gas mixing device includes the mixer of desulfurization waste liquor pipeline and flue gases of cock oven piping connection, mix
Clutch outlet connection claus reaction device, claus reaction device outlet connection desulfurizing tower entrance.
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| CN201721804425.3U CN207734828U (en) | 2017-12-21 | 2017-12-21 | The processing system of desulfurization waste liquor produced by a kind of coke-stove gas wet oxidation desulfurization |
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| CN201721804425.3U CN207734828U (en) | 2017-12-21 | 2017-12-21 | The processing system of desulfurization waste liquor produced by a kind of coke-stove gas wet oxidation desulfurization |
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