CN116002946A - Treatment device for carbon black-containing wastewater in process of preparing acetylene from natural gas - Google Patents
Treatment device for carbon black-containing wastewater in process of preparing acetylene from natural gas Download PDFInfo
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- CN116002946A CN116002946A CN202111213849.3A CN202111213849A CN116002946A CN 116002946 A CN116002946 A CN 116002946A CN 202111213849 A CN202111213849 A CN 202111213849A CN 116002946 A CN116002946 A CN 116002946A
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- carbon black
- filter
- pressure pump
- waste water
- treatment device
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- 239000006229 carbon black Substances 0.000 title claims abstract description 100
- 239000002351 wastewater Substances 0.000 title claims abstract description 53
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 title claims abstract description 36
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 31
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 title claims abstract description 25
- 239000003345 natural gas Substances 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 34
- 238000000926 separation method Methods 0.000 claims abstract description 13
- 239000007788 liquid Substances 0.000 claims abstract description 6
- 238000005516 engineering process Methods 0.000 claims abstract description 4
- 238000012545 processing Methods 0.000 claims abstract description 4
- 239000012065 filter cake Substances 0.000 claims description 23
- 239000004744 fabric Substances 0.000 claims description 19
- 238000004519 manufacturing process Methods 0.000 claims description 16
- 238000007599 discharging Methods 0.000 claims description 13
- 239000007921 spray Substances 0.000 claims description 11
- 238000002360 preparation method Methods 0.000 claims description 5
- 238000005507 spraying Methods 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 3
- 239000000706 filtrate Substances 0.000 claims 1
- 238000003912 environmental pollution Methods 0.000 abstract description 4
- 238000004065 wastewater treatment Methods 0.000 abstract description 2
- 239000000428 dust Substances 0.000 description 9
- 238000007254 oxidation reaction Methods 0.000 description 6
- 230000003647 oxidation Effects 0.000 description 5
- 238000005336 cracking Methods 0.000 description 4
- 230000018044 dehydration Effects 0.000 description 4
- 238000006297 dehydration reaction Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 239000000446 fuel Substances 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 238000010891 electric arc Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- 229920002978 Vinylon Polymers 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000013064 chemical raw material Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- -1 ethylene, chloroethylene, trichloroethylene, vinyl Chemical group 0.000 description 1
- 239000006232 furnace black Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920002239 polyacrylonitrile Polymers 0.000 description 1
- 238000011085 pressure filtration Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000000967 suction filtration Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The application belongs to the technical field of waste water treatment, discloses a processing apparatus of natural gas acetylene making technology carbon black-containing waste water, including carbon black waste water intermediate tank, first pressure pump, second pressure pump, third pressure pump and pressure filter, first pressure pump is connected carbon black waste water intermediate tank, be provided with agitating unit in the carbon black waste water intermediate tank, carbon black waste water intermediate tank rethread second pressure pump is connected the pressure filter carries out solid-liquid separation to carbon black waste water, the pressure filter is connected the third pressure pump, through the third pressure pump carries out the retrieval and utilization with separating water to acetylene apparatus for producing, has the advantage of reducing environmental pollution when improving resource utilization.
Description
Technical Field
The invention belongs to the technical field of wastewater treatment, and particularly relates to a device for treating carbon black-containing wastewater in a process of preparing acetylene from natural gas.
Background
Acetylene is an important organic chemical raw material, and is widely used in the fields of metal processing, welding, cutting and the like, and the preparation of chemical products such as ethylene, chloroethylene, trichloroethylene, vinyl acetate, acrylonitrile, polyacrylonitrile, 1, 4-butanediol and the like ("the new development discussion of acetylene in organic synthetic chemistry," step-by-step win, china chemical trade, volume 2015, 22 nd page 103, 12 th month 31 of the publication 2015, "research progress of acetylene preparation by thermal plasma cracking of low-carbon alkane," Su Baogen and the like, chemical reaction engineering and process, volume 29, page 230-236, 30 days 2013, 06 month 30 of the publication). The preparation method of acetylene mainly comprises a non-catalytic partial oxidation method, an electric arc method, a plasma method and the like, wherein the electric arc method is eliminated due to high energy consumption, the plasma method is in a test stage (the current state of natural gas acetylene technology research and thinking, anjie, vinylon communication, volume 33 of 2013, 2 nd, pages 15-20 and 12 months of publication 2013), the electric consumption is high, the requirements on equipment are severe, and the non-catalytic partial oxidation method is a main method for acetylene production so far and is difficult to popularize and apply.
The process for preparing acetylene by partial oxidation of natural gas mainly comprises a desulfurization device process, an oxygen production device process, a cracking section process and a concentration section process, wherein the natural gas in the cracking process passes through a cracking gas generated by partial oxidation reaction of an acetylene furnace, and carbon black water formed by spray water in an electric filter and a cooling tower is used as a byproduct carbon black, enters a degassing tank through a carbon black water main pipe and then enters a carbon black separation tank, and the carbon black wastewater with the water content of about 98% is obtained through the treatment of methods such as separation, sedimentation and concentration of carbon black water by the device; further, the carbon black wastewater is subjected to solid-liquid separation, the traditional process adopts vacuum drum dehydration, the carbon black water is subjected to suction filtration by utilizing vacuum, and a filter cake with the water content of about 85% is obtained, and the filter cake is not suitable for fuel use due to the too high water content and has low secondary resource utilization rate.
The patent CN109294685A mixes the original sludge slurry with the anionic agent, then mixes the mixture with a small amount of carbon black slurry, and then carries out deep dehydration by adopting an ultra-high pressure filter press to obtain the fuel, but the method mainly treats the sludge, if the carbon black slurry is mainly treated, the carbon black has adhesiveness and particles reaching the nano-scale, the difficult unloading can occur, a large amount of carbon black dust drifts, and the environmental pollution is caused and the physical health of production staff is not facilitated.
Disclosure of Invention
The invention aims to provide a treatment device for carbon black-containing wastewater in a process of preparing acetylene from natural gas, which aims to solve the problems of improving the utilization rate of resources and reducing environmental pollution.
In order to achieve the above purpose, the invention provides a treatment device for carbon black-containing wastewater in a process of preparing acetylene from natural gas, which is characterized in that: including carbon black waste water intermediate tank, first pressure pump, second pressure pump, third pressure pump and pressure filter, first pressure pump is connected carbon black waste water intermediate tank, be provided with agitating unit in the carbon black waste water intermediate tank, carbon black waste water intermediate tank rethread second pressure pump is connected the pressure filter carries out solid-liquid separation to carbon black waste water, the pressure filter is connected the third pressure pump, through the third pressure pump is sent the separation water to acetylene production device and is recycled.
Further, the filter press adopts a hydraulic filter press, filter cloth is arranged in the filter press, carbon black is used as a filter cake to be remained on the surface of the filter cloth after the filter pressing process, the filter liquor enters a collecting pipe after passing through the filter cloth, the collecting pipe is communicated with a third pressure pump to an acetylene device for recycling, and a small amount of spray water is used as a dust-proof device.
In order to collect and process carbon black in batches, the filter press comprises an automatic discharging device, a conveying belt is further arranged below the filter press, the automatic discharging device enables a carbon black filter cake to fall off from the filter cloth through vibration, the carbon black filter cake is prevented from adhering, the carbon black filter cake falls onto the conveying belt below the filter press, and the carbon black filter cake is conveyed to a carbon black hopper through the conveying belt.
In order to prevent carbon black from falling out of the conveying belt, a carbon black discharging part of the filter press is in soft connection with the conveying belt by adopting dustproof cloth.
In order to control dust pollution, dustproof facilities are arranged outside the filter press, and the dustproof facilities surround the whole filter press.
Further, be provided with suction device and filter in the dustproof facility, pass through between suction device and the dustproof facility the filter is connected, suction device forms directional flow with the gas in the dustproof facility, and is taken out outside the dustproof facility, after interception carbon black dust through the filter, in the atmosphere, can reduce the dust content in the air in the dustproof facility.
Further, spray set still is provided with in the dustproof facility, spray set follows dustproof facility inside four walls downward spray water, prevent carbon black is in when filter cake on the pressure filter drops on the four sides inner wall adhesion of dustproof facility, the water that contains carbon black that forms enters into device waste water collection pipeline through ground collecting groove, and this pipeline links to each other with first force pump import pipeline, rethread first force pump carry to carbon black waste water intermediate tank.
The beneficial effects are that: the invention provides a treatment device for carbon black-containing wastewater in a natural gas acetylene production process, which can well separate carbon black wastewater, has no obvious carbon black dust drift, and reduces environmental pollution; the carbon black filter cake with low water content can be obtained, the requirement of mixing with fire coal is met, and the waste utilization of the carbon black filter cake is realized; the separated water has SS content less than 10ppm and COD content less than 200mg/L, and can be reused in acetylene producing apparatus, so that the resource utilization rate is further raised.
Drawings
Fig. 1 is a schematic structural diagram of embodiment 1.
Reference numerals: 1. a first pressure pump; 2. A second pressure pump; 3. a third pressure pump; 4. carbon black wastewater intermediate tank; 5. a suction device; 6. a filter; 7. a dust-proof facility; 8. a filter press; 9. a conveyor belt; 10. and a carbon black hopper.
Detailed Description
The following describes the embodiments of the present invention in further detail with reference to the accompanying drawings, but the present invention is not limited to these embodiments, and modifications made to the present invention without departing from the principle of the present invention fall within the scope of protection of the claims of the present invention.
Comparative example 1
The carbon black wastewater is treated according to the original process, and the specific process flow is as follows:
pumping carbon black wastewater with the water content of about 98% generated in the process of preparing acetylene by partial oxidation of natural gas to a carbon black wastewater intermediate tank 4, pumping to a vacuum drum machine, carrying out vacuum dehydration operation on the carbon black water, wherein the vacuum pressure is 10KPa.G, separating carbon black obtained by separation from the filter cloth of the vacuum drum machine, entering a hopper, and then sending the carbon black wastewater to landfill treatment, wherein the water content of a carbon black filter cake is 85.7%, and only landfill treatment is carried out; the SS content of the separated water is 42ppm, the COD is 189 mg/L, and the separated water cannot meet the recycling requirement of an acetylene production device.
Example 1
The wastewater containing carbon black in the process of preparing acetylene from natural gas is treated according to the device flow shown in figure 1,
the utility model provides a processing apparatus of carbon black waste water is contained in natural gas acetylene preparation technology, includes carbon black waste water intermediate tank 4, first pressure pump 1, second pressure pump 2, third pressure pump 3 and pressure filter 8, pressure filter 8 adopts hydraulic pressure filter 8, first pressure pump 1 connects carbon black waste water intermediate tank 4, be provided with agitating unit in the carbon black waste water intermediate tank 4, carbon black waste water is in after fully stirring in the carbon black waste water intermediate tank 4, by carbon black waste water intermediate tank 4 passes through second pressure pump 2 and connects pressure filter 8, be provided with the filter cloth in the pressure filter 8, the carbon black is left on the filter cloth surface as the filter cake after the filter pressing process, and the filter liquor gets into in the collection pipe behind the filter cloth, realizes solid-liquid separation, pressure filter 8 passes through the collection pipe intercommunication third pressure pump 3, through third pressure pump 3 pumps the separation water to acetylene apparatus and recycles.
An automatic discharging device is arranged in the filter press 8, a conveying belt 9 is further arranged below the filter press 8, the automatic discharging device enables a carbon black filter cake to fall off from filter cloth through vibration, fall onto the conveying belt 9 below the filter press 8, the carbon black filter cake is conveyed to a carbon black hopper 10 through the conveying belt 9, and a carbon black discharging part of the filter press 8 is in soft connection with the conveying belt 9 through dustproof cloth.
The dust-proof facility 7 is arranged outside the filter press 8, the dust-proof facility 7 surrounds the whole filter press 8, the suction device 5 and the filter 6 are arranged outside the dust-proof facility 7, the suction device 5 is connected with the dust-proof facility 7 through the filter 6, the suction device 5 forms directional flow with gas in the dust-proof facility 7, the gas is extracted outside the dust-proof facility 7, carbon black dust is intercepted through the filter 6 and then discharged into the atmosphere, a spraying device is further arranged in the dust-proof facility 7, the spraying device sprays water downwards along four walls inside the dust-proof facility, and dust generated when a carbon black filter cake on the filter press 8 falls off is prevented from adhering on four inner walls of the dust-proof facility 7.
The specific process flow is as follows:
the method comprises the steps of feeding carbon black wastewater with the water content of about 98% and spray water from a dustproof facility 7 generated in a process of preparing acetylene by partial oxidation of natural gas into a carbon black wastewater intermediate tank 4 through a first pressure pump 1, adding a dehydration auxiliary agent into the carbon black wastewater intermediate tank 4, stirring and mixing uniformly through a stirring device, feeding the carbon black wastewater into a filter press 8 through a second pressure pump 2 for solid-liquid separation, discharging the carbon black wastewater after pressure filtration, simultaneously opening a spraying device and a suction device 5 (adopting a fan), vibrating each quick filter cloth by the automatic discharging device in the filter press 8 during discharging, enabling a carbon black filter cake on the filter cloth to fall downwards by gravity, feeding the carbon black filter cake onto a conveying belt 9 after being connected through a dustproof cloth soft connection of a discharge port at the bottom of the filter press 8, conveying the conveying belt 9, feeding the carbon black filter cake into a carbon black hopper 10 for storage, and discharging the air containing dust extracted from the filter press 8 into the atmosphere after dust removal through the filter 6 by the suction device 5; the spray water of the spray device flows downwards to a ground collecting pipeline along the four inner walls of the dustproof device, and the collecting pipeline is connected with the inlet of the first pressure pump 1, so that carbon black separation of the spray water can be realized; in order to save water, most of the water from the filter press 8 is returned to the acetylene production plant for reuse, and a small amount of water is used as the water for spraying the dust-proof facility 7.
The water content of the obtained carbon black filter cake is 48-58% after the carbon black wastewater is treated by the device, and the carbon black filter cake can be mixed with coal and crushed to enter a boiler to be used as fuel or used as a raw material for modifying and utilizing carbon black; the SS content of the separated water is less than 10ppm, the COD content is less than 200mg/L, and the recycling of an acetylene production device is satisfied.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (7)
1. The utility model provides a processing apparatus of carbon black-containing waste water of natural gas acetylene preparation technology, includes carbon black waste water intermediate tank (4), its characterized in that: still include first pressure pump (1), second pressure pump (2), third pressure pump (3) and pressure filter (8), first pressure pump (1) are connected carbon black waste water intermediate tank (4), be provided with agitating unit in carbon black waste water intermediate tank (4), carbon black waste water intermediate tank (4) rethread second pressure pump (2) are connected pressure filter (8) carry out solid-liquid separation to carbon black waste water, pressure filter (8) intercommunication third pressure pump (3), and through third pressure pump (3) are with separation water pump to acetylene apparatus for producing.
2. The device for treating carbon black-containing wastewater in a natural gas acetylene production process according to claim 1, wherein the device comprises: the filter press (8) is a hydraulic filter press, filter cloth is arranged in the filter press (8), carbon black is left on the surface of the filter cloth as a filter cake after the filter pressing process, filtrate enters a collecting pipe after passing through the filter cloth, and the collecting pipe is communicated with the third pressure pump (3) to be sent to the acetylene production device.
3. The treatment device for carbon black-containing wastewater in a natural gas acetylene production process according to claim 1 or 2, wherein the treatment device comprises: an automatic discharging device is arranged in the filter press (8), a conveying belt (9) is arranged below the filter press (8), the automatic discharging device enables a carbon black filter cake to fall off from the filter cloth through vibration, and the carbon black filter cake falls onto the conveying belt (9) below the filter press (8), and is conveyed to a carbon black hopper (10) through the conveying belt (9).
4. The treatment device for carbon black-containing wastewater in a natural gas acetylene production process according to claim 3, wherein the treatment device comprises: and the discharging part of the filter press (8) is flexibly connected with the conveying belt (9) by adopting dustproof cloth.
5. The treatment device for carbon black-containing wastewater in a natural gas acetylene production process according to claim 4, wherein the treatment device comprises: a dustproof facility (7) is arranged outside the filter press (8), and the dustproof facility (7) surrounds the whole filter press (8).
6. The treatment device for carbon black-containing wastewater in a natural gas acetylene production process according to claim 5, wherein the treatment device comprises: the dustproof facility (7) is externally provided with a suction device (5) and a filter (6), and the suction device (5) is connected with the dustproof facility (7) through the filter (6).
7. The treatment device for carbon black-containing wastewater in a natural gas acetylene production process according to claim 5 or 6, wherein the treatment device comprises: and a spraying device is further arranged in the dustproof facility (7), and sprays water downwards along four walls inside the dustproof facility (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111213849.3A CN116002946A (en) | 2021-10-19 | 2021-10-19 | Treatment device for carbon black-containing wastewater in process of preparing acetylene from natural gas |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111213849.3A CN116002946A (en) | 2021-10-19 | 2021-10-19 | Treatment device for carbon black-containing wastewater in process of preparing acetylene from natural gas |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3528598A1 (en) * | 1985-08-09 | 1987-02-19 | Basf Ag | METHOD FOR CLEANING AND DISPOSAL OF SOOT AND ASH CONTAINING SOOT |
| CN103894238A (en) * | 2014-04-14 | 2014-07-02 | 唐伟 | Equipment for converting combustible and explosive slurry into powder |
| CN207806150U (en) * | 2017-12-19 | 2018-09-04 | 福建省固体废物处置有限公司 | A kind of filtering equipment gas suction device |
| CN111574858A (en) * | 2019-02-15 | 2020-08-25 | 中国石油化工股份有限公司 | Method for removing organic matters in carbon black by-product in preparation of acetylene by partial oxidation of natural gas |
| CN113041674A (en) * | 2021-04-14 | 2021-06-29 | 王金福 | Process method for closed cyclic utilization of carbon black water in natural gas acetylene process |
-
2021
- 2021-10-19 CN CN202111213849.3A patent/CN116002946A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3528598A1 (en) * | 1985-08-09 | 1987-02-19 | Basf Ag | METHOD FOR CLEANING AND DISPOSAL OF SOOT AND ASH CONTAINING SOOT |
| CN103894238A (en) * | 2014-04-14 | 2014-07-02 | 唐伟 | Equipment for converting combustible and explosive slurry into powder |
| CN207806150U (en) * | 2017-12-19 | 2018-09-04 | 福建省固体废物处置有限公司 | A kind of filtering equipment gas suction device |
| CN111574858A (en) * | 2019-02-15 | 2020-08-25 | 中国石油化工股份有限公司 | Method for removing organic matters in carbon black by-product in preparation of acetylene by partial oxidation of natural gas |
| CN113041674A (en) * | 2021-04-14 | 2021-06-29 | 王金福 | Process method for closed cyclic utilization of carbon black water in natural gas acetylene process |
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