CN219518108U - Coking HPF desulfurization waste liquid recycling treatment system - Google Patents
Coking HPF desulfurization waste liquid recycling treatment system Download PDFInfo
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- CN219518108U CN219518108U CN202320226922.9U CN202320226922U CN219518108U CN 219518108 U CN219518108 U CN 219518108U CN 202320226922 U CN202320226922 U CN 202320226922U CN 219518108 U CN219518108 U CN 219518108U
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Abstract
The utility model belongs to the technical field of industrial hazardous waste treatment, and particularly relates to a coking HPF desulfurization waste liquid recycling treatment system which comprises a sulfur melting kettle, a primary filtering and separating device, a secondary filtering and separating device and a tertiary filtering and separating device; the primary filtering and separating device comprises a three-way valve, a slag discharging hopper, a crude sulfur storage tank and a crude sulfur pump; the secondary filtering and separating device comprises a liquid sulfur centrifuge, and an inlet of the liquid sulfur centrifuge is communicated with an outlet of the crude sulfur pump; the three-stage filtering and separating device comprises a liquid sulfur centrifuge; the black sulfur containing coal dust and tar generated by sulfur foam sulfur melting can be effectively removed by a multi-stage filtration and filter aid adding method, and the removal effect of the coal dust and other impurities is remarkable; the liquid sulfur is subjected to first-stage filtration separation to remove about 60% of pulverized coal particles, is subjected to second-stage filtration separation to remove about 25% of pulverized coal particles, is subjected to third-stage filtration separation to remove about 13% of pulverized coal fine particles, and the refined sulfur slurry can be stably conveyed without blocking a pipeline and a spray gun after the third-stage filtration separation.
Description
Technical Field
The utility model belongs to the technical field of sewage sludge treatment, and particularly relates to a coking HPF desulfurization waste liquid recycling treatment system.
Background
At present, the HPF method and PDS method which are commonly used for desulfurizing coke oven gas by taking ammonia as an alkali source in the coking industry in China are used for desulfurizing coke oven gas, because the components of the gas are complex, the components of waste liquid in the process of desulfurizing the gas are complex, and the waste liquid contains sulfate, thiosulfate, thiocyanate and other auxiliary salt components, sulfur, coal dust, catalysts, heavy metals, tar and other impurities, when the auxiliary salt in the system continuously accumulates to more than 250g/L, the desulfurizing effect can be seriously affected, and meanwhile, the auxiliary salt and the sulfur concentration in the system are increased to cause the blocking of equipment of a desulfurizing system, so that the auxiliary salt is required to be discharged in the desulfurizing process, and meanwhile, the sulfur has low economic value because of too much impurities.
The current coking industry generally adopts a wet process technology of burning desulfurization waste liquid to prepare acid, sulfur foam is filtered and precipitated and separated after passing through a sulfur melting kettle, and supernatant liquid is subjected to single-effect evaporation and concentration to generate salt slurry; the liquid sulfur produced at the bottom of the sulfur melting kettle is provided with pulverized coal impurities with different particle sizes, a pipeline and a spray gun are easy to be blocked during transportation, salt slurry produced by single-effect evaporation and concentration and the liquid sulfur produced at the sulfur melting kettle are sent to an incinerator by a pump by using coal gas as fuel, the gas is incinerated to prepare SO 2-enriched gas, and then concentrated sulfuric acid is prepared through an acid preparation process flow.
The key of the technology is to pretreat sulfur foam, if the pretreat does not reach the standard, impurities such as coal dust and the like can block a pipeline and a spray gun, and various problems occur in acid preparation by incineration, such as: the pipeline is blocked, the incineration effect is poor, the waste heat boiler is coked and blocked, the acid production is not up to the standard, and the acid production wastewater is large.
Disclosure of Invention
In order to solve the defects in the prior art, the utility model aims to provide the coking HPF desulfurization waste liquid recycling treatment system, which has the advantages that the removal effect of impurities such as coal dust is obvious, and the refined sulfur pulp after filtration, separation and impurity removal can be stably conveyed without blocking a pipeline and a spray gun.
In order to achieve the above purpose, the utility model adopts a technical scheme that:
a coking HPF desulfurization waste liquid recycling treatment system comprises:
a sulfur melting kettle;
the primary filtering and separating device comprises a three-way valve, a slag discharging hopper, a crude sulfur storage tank and a crude sulfur pump; an inlet of the three-way valve is communicated with the bottom of the sulfur melting kettle, two outlets of the three-way valve are respectively communicated with the crude sulfur storage tank and the slag discharging hopper, and the crude sulfur pump is arranged on the crude sulfur storage tank;
the secondary filtering and separating device comprises a liquid sulfur centrifuge, and an inlet of the liquid sulfur centrifuge is communicated with an outlet of the crude sulfur pump;
the three-stage filtering and separating device comprises a liquid sulfur filter and a refined sulfur slurry storage tank, wherein an inlet of the liquid sulfur filter is communicated with an outlet of a liquid sulfur centrifuge, and an outlet of the liquid sulfur filter is communicated with the refined sulfur slurry storage tank.
Optionally, the secondary filtering and separating device further comprises a sulfur filter-aid tank and a sulfur filter-aid pump, wherein the sulfur filter-aid pump is arranged on the sulfur filter-aid tank, a crude sulfur outlet of the liquid sulfur filter is communicated with the sulfur filter-aid tank, and an inlet of the liquid sulfur filter is communicated with an outlet of the sulfur filter-aid pump.
Optionally, the coking HPF desulfurization waste liquid recycling treatment system further comprises a liquid sulfur delivery pump and an incinerator, and the refined sulfur slurry storage tank is sequentially communicated with the liquid sulfur delivery pump and the incinerator.
Optionally, the coking HPF desulfurization waste liquid recycling treatment system further comprises a single-effect evaporation concentration device, a salt slurry buffer tank and a salt slurry conveying pump, wherein an inlet of the single-effect evaporation concentration device is communicated with the top of the sulfur melting kettle, the single-effect evaporation concentration device, the salt slurry buffer tank and the salt slurry conveying pump are sequentially communicated, and an outlet of the salt slurry conveying pump is communicated with the incinerator.
Optionally, the coking HPF desulfurization waste liquid recycling treatment system further comprises a slag discharging device, and the slag discharging device is arranged at the bottom of the liquid sulfur filter.
Optionally, the crude sulfur storage tank, the sulfur auxiliary filter tank, the refined sulfur pulp storage tank and the salt pulp buffer tank are all internally provided with heat tracing pipes.
Optionally, the coarse sulfur storage tank and the sulfur auxiliary filtering tank are provided with stirrers.
Optionally, an outlet of the liquid sulfur delivery pump is connected with a liquid sulfur spray gun, and the liquid sulfur spray gun is fixedly arranged in the incinerator.
Optionally, an outlet of the salt slurry delivery pump is connected with a salt slurry spray gun, and the salt slurry spray gun is fixedly arranged in the incinerator.
Alternatively, the two sulfur melting kettles and the three-way valve are arranged side by side, the inlets of the two three-way valves are respectively communicated with the bottoms of the two sulfur melting kettles, and the two outlets of the two three-way valves are respectively communicated with the crude sulfur storage tank and the slag discharging hopper.
Compared with the prior art, the utility model has the beneficial effects that:
1. compared with the traditional activated sludge method, the coking HPF desulfurization waste liquid recycling treatment system provided by the utility model has the advantages of simple system, convenience in operation and low investment cost; the black sulfur containing coal dust and tar generated by sulfur foam sulfur melting can be effectively removed by a multi-stage filtration and filter aid adding method, and the removal effect of the coal dust and other impurities is remarkable;
2. the liquid sulfur is subjected to first-stage filtration separation to remove about 60% of large coal dust particles, is subjected to second-stage filtration separation to remove about 25% of fine coal dust particles, is subjected to third-stage filtration separation to remove about 13% of fine coal dust particles, and the refined sulfur slurry can be stably conveyed without blocking a pipeline and a spray gun after the third-stage filtration separation;
3. the coal dust separated from the liquid sulfur can be recycled, no new pollutant is generated, and the environmental pollution is reduced.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are necessary for the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model and that other drawings may be obtained from them without inventive effort for a person skilled in the art.
FIG. 1 is a block diagram of a coking HPF desulfurization waste liquid recycling treatment system of the present utility model.
In the figure: 1. a sulfur melting kettle; 2. a three-way valve; 3. a slag discharge hopper; 4. a crude sulfur storage tank; 5. a liquid sulfur centrifuge; 6. a sulfur filter aid tank; 7. liquid sulfur filter; 8. a refined sulfur pulp storage tank; 9. a single-effect evaporation concentration device; 10. a salt slurry buffer tank; 11. an incinerator; 12. a heat tracing pipe; 13. a stirrer; 14. a liquid sulfur lance; 15. a salt slurry spray gun; 16. a crude sulfur pump; 17. a sulfur filter aid pump; 18. a liquid sulfur delivery pump; 19. a salt slurry delivery pump; 20. and a slag discharging device.
Detailed Description
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
A coking HPF desulfurization waste liquid recycling treatment system comprises a sulfur melting kettle 1, a primary filtering and separating device, a secondary filtering and separating device and a tertiary filtering and separating device. Wherein the primary filtering and separating device comprises a three-way valve 2, a slag discharging hopper 3, a crude sulfur storage tank 4 and a crude sulfur pump 16; the inlet of the three-way valve 2 is communicated with the bottom of the sulfur melting kettle 1, the two outlets of the three-way valve 2 are respectively communicated with the crude sulfur storage tank 4 and the slag discharging hopper 3, and the crude sulfur pump 16 is arranged on the crude sulfur storage tank 4.
The sulfur foam from coking desulfurization continuously melts sulfur in the sulfur melting kettle 1, a certain amount of liquid black sulfur is accumulated, a three-way valve 2 at the bottom of the sulfur melting kettle 1 is adjusted to be communicated with a pipeline of a crude sulfur storage tank 4 to discharge the liquid sulfur, after the liquid sulfur is discharged for about half an hour, the three-way valve 2 is adjusted to be communicated with a pipeline of a slag discharge hopper 3 to discharge pulverized coal, the pulverized coal is discharged to the slag discharge hopper 3, and the first separation and impurity removal of the liquid sulfur are completed.
It is noted that in this embodiment, two sulfur melting kettles 1 and three-way valves 2 are provided, the two sulfur melting kettles 1 are arranged side by side, inlets of the two three-way valves 2 are respectively communicated with bottoms of the two sulfur melting kettles 1, and two outlets of the two three-way valves 2 are respectively communicated with a coarse sulfur storage tank 4 and a slag discharging hopper 3. Of course, the number of the sulfur melting kettle 1 and the three-way valve 2 can be set according to actual needs.
Further, the secondary filtration separation device of the present embodiment includes a liquid sulfur centrifuge 5, a sulfur assist filter tank 6, and a sulfur assist filter pump 17. Wherein, the inlet of the liquid sulfur centrifuge 5 is communicated with the outlet of the crude sulfur pump 16; the liquid sulfur after the first filtering separation impurity removal is sent to a liquid sulfur centrifuge 5 for the second filtering impurity removal through a crude sulfur pump 16 at the top of a crude sulfur storage tank 4.
Further, the three-stage filtering and separating device of the embodiment comprises a liquid sulfur filter 7 and a refined sulfur slurry storage tank 8, wherein an inlet of the liquid sulfur filter 7 is communicated with an outlet of the liquid sulfur centrifuge 5, and an outlet of the liquid sulfur filter 7 is communicated with the refined sulfur slurry storage tank 8. The liquid sulfur after the second filtration is sent to a liquid sulfur filter 7 through a liquid sulfur centrifuge 5, and after a large amount of coal dust is accumulated in the liquid sulfur filter 7, the coal dust is discharged from a slag discharge port of equipment of the liquid sulfur filter 7 so as to prevent blockage and prolong the service life of the equipment. The refined sulfur pulp after three times of filtering and separating and impurity removing is sent to a refined sulfur pulp storage tank 8 from a liquid sulfur filter 7 for storage, and the refined sulfur pulp can be stably conveyed without blocking a pipeline and a spray gun and is sent to an incinerator 11 for incineration to prepare industrial sulfuric acid.
It is noted that the sulfur assist filter pump 17 of this embodiment is disposed on the sulfur assist filter tank 6, the crude sulfur discharge port of the liquid sulfur filter 7 is communicated with the sulfur assist filter tank 6, and the inlet of the liquid sulfur filter 7 is communicated with the outlet of the sulfur assist filter pump 17.
Further, the coking HPF desulfurization waste liquid recycling treatment system further comprises a liquid sulfur delivery pump 18 and an incinerator 11, the refined sulfur slurry storage tank 8 is sequentially communicated with the liquid sulfur delivery pump 18 and the incinerator 11, an outlet of the liquid sulfur delivery pump 18 is connected with a liquid sulfur spray gun 14, and the liquid sulfur spray gun 14 is fixedly arranged in the incinerator 11.
Further, the coking HPF desulfurization waste liquid recycling treatment system further comprises a single-effect evaporation concentration device 9, a salt slurry buffer tank 10 and a salt slurry conveying pump 19, wherein an inlet of the single-effect evaporation concentration device 9 is communicated with the top of the sulfur melting kettle 1, the single-effect evaporation concentration device 9, the salt slurry buffer tank 10 and the salt slurry conveying pump 19 are sequentially communicated, and an outlet of the salt slurry conveying pump 19 is communicated with the incinerator 11. The outlet of the salt slurry conveying pump 19 is connected with a salt slurry spray gun 15, and the salt slurry spray gun 15 is fixedly arranged in the incinerator 11.
Further, the coking HPF desulfurization waste liquid recycling treatment system also comprises a slag discharging device 20, and the slag discharging device 20 is arranged at the bottom of the liquid sulfur filter 7.
Further, the crude sulfur storage tank 4, the sulfur auxiliary filter tank 6, the refined sulfur pulp storage tank 8 and the salt pulp buffer tank 10 are all internally provided with heat tracing pipes 12. The coarse sulfur storage tank 4 and the sulfur auxiliary filter tank 6 are provided with a stirrer 13.
Compared with the prior art, the utility model has the beneficial effects that:
1. compared with the traditional activated sludge method, the coking HPF desulfurization waste liquid recycling treatment system provided by the utility model has the advantages of simple system, convenience in operation and low investment cost; the black sulfur containing coal dust and tar generated by sulfur foam sulfur melting can be effectively removed by a multi-stage filtration and filter aid adding method, and the removal effect of the coal dust and other impurities is remarkable;
2. the liquid sulfur is subjected to first-stage filtration separation to remove about 60% of large coal dust particles, is subjected to second-stage filtration separation to remove about 25% of fine coal dust particles, is subjected to third-stage filtration separation to remove about 13% of fine coal dust particles, and the refined sulfur slurry can be stably conveyed without blocking a pipeline and a spray gun after the third-stage filtration separation;
3. the coal dust separated from the liquid sulfur can be recycled, no new pollutant is generated, and the environmental pollution is reduced.
The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present utility model, it should be understood that, if there is an azimuth or positional relationship indicated by terms such as "upper", "lower", "left", "right", etc., based on the azimuth or positional relationship shown in the drawings, it is only for convenience of describing the present utility model and simplifying the description, but it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus terms describing the positional relationship in the drawings are merely illustrative and should not be construed as limitations of the present patent, and specific meanings of the terms described above may be understood by those skilled in the art according to specific circumstances.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (10)
1. A coking HPF desulfurization waste liquid recycling treatment system, characterized by comprising:
a sulfur melting kettle;
the primary filtering and separating device comprises a three-way valve, a slag discharging hopper, a crude sulfur storage tank and a crude sulfur pump; the inlet of the three-way valve is communicated with the bottom of the sulfur melting kettle, the two outlets of the three-way valve are respectively communicated with the crude sulfur storage tank and the slag discharging hopper, and the crude sulfur pump is arranged on the crude sulfur storage tank;
the secondary filtering and separating device comprises a liquid sulfur centrifuge, wherein the inlet of the liquid sulfur centrifuge is communicated with the outlet of the crude sulfur pump;
the three-stage filtering and separating device comprises a liquid sulfur filter and a refined sulfur slurry storage tank, wherein an inlet of the liquid sulfur filter is communicated with an outlet of the liquid sulfur centrifuge, and an outlet of the liquid sulfur filter is communicated with the refined sulfur slurry storage tank.
2. The coking HPF desulfurization waste liquid recycling treatment system according to claim 1, wherein the secondary filtering separation device further comprises a sulfur filter aid tank and a sulfur filter aid pump, the sulfur filter aid pump is arranged on the sulfur filter aid tank, a crude sulfur outlet of the liquid sulfur filter is communicated with the sulfur filter aid tank, and an inlet of the liquid sulfur filter is communicated with an outlet of the sulfur filter aid pump.
3. The coking HPF desulfurization waste liquid recycling treatment system according to claim 2, further comprising a liquid sulfur transfer pump and an incinerator, wherein the refined sulfur slurry storage tank is in communication with the liquid sulfur transfer pump and the incinerator in order.
4. The coking HPF desulfurization waste liquid recycling treatment system of claim 3, further comprising a single-effect evaporation concentration device, a salt slurry buffer tank and a salt slurry delivery pump, wherein an inlet of the single-effect evaporation concentration device is communicated with the top of the sulfur melting kettle, the single-effect evaporation concentration device, the salt slurry buffer tank and the salt slurry delivery pump are sequentially communicated, and an outlet of the salt slurry delivery pump is communicated with the incinerator.
5. The coking HPF desulfurization waste liquid recycling treatment system according to claim 1, further comprising a slag discharging device, wherein the slag discharging device is installed at the bottom of the liquid sulfur filter.
6. The coking HPF desulfurization waste liquid recycling treatment system of claim 4, wherein the crude sulfur storage tank, the sulfur-assisted filter tank, the refined sulfur slurry storage tank and the salt slurry buffer tank are provided with heat tracing pipes.
7. The coking HPF desulfurization waste liquid recycling treatment system according to claim 4, wherein the crude sulfur storage tank and the sulfur filter-aid tank are provided with agitators.
8. The coking HPF desulfurization waste liquid recycling treatment system of claim 3, wherein the outlet of the liquid sulfur transfer pump is connected with a liquid sulfur spray gun, and the liquid sulfur spray gun is fixedly arranged in the incinerator.
9. The coking HPF desulfurization waste liquid recycling treatment system of claim 4, the outlet of the salt slurry conveying pump being connected with a salt slurry spray gun, the salt slurry spray gun being fixedly arranged in the incinerator.
10. The coking HPF desulfurization waste liquid recycling treatment system according to any one of claims 1 to 9, wherein two sulfur melting kettles and two three-way valves are arranged side by side, inlets of the two three-way valves are respectively communicated with bottoms of the two sulfur melting kettles, and two outlets of the two three-way valves are respectively communicated with the crude sulfur storage tank and the slag discharge hopper.
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| CN116062703A (en) * | 2023-02-13 | 2023-05-05 | 中冶南方都市环保工程技术股份有限公司 | Coking HPF desulfurization waste liquid recycling treatment method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116062703A (en) * | 2023-02-13 | 2023-05-05 | 中冶南方都市环保工程技术股份有限公司 | Coking HPF desulfurization waste liquid recycling treatment method |
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