CN115246662A - Treatment device and treatment method for benzene hydrogenation wastewater - Google Patents
Treatment device and treatment method for benzene hydrogenation wastewater Download PDFInfo
- Publication number
- CN115246662A CN115246662A CN202110458938.8A CN202110458938A CN115246662A CN 115246662 A CN115246662 A CN 115246662A CN 202110458938 A CN202110458938 A CN 202110458938A CN 115246662 A CN115246662 A CN 115246662A
- Authority
- CN
- China
- Prior art keywords
- wastewater
- benzene hydrogenation
- coke oven
- ejector
- bridge pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 title claims abstract description 350
- 239000002351 wastewater Substances 0.000 title claims abstract description 120
- 238000005984 hydrogenation reaction Methods 0.000 title claims abstract description 108
- 238000000034 method Methods 0.000 title claims abstract description 27
- 230000007246 mechanism Effects 0.000 claims abstract description 72
- 239000000571 coke Substances 0.000 claims abstract description 71
- 238000001816 cooling Methods 0.000 claims abstract description 34
- 239000007921 spray Substances 0.000 claims abstract description 32
- 238000005507 spraying Methods 0.000 claims abstract description 31
- 238000003860 storage Methods 0.000 claims description 19
- 230000009467 reduction Effects 0.000 claims description 15
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 10
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 10
- 238000000889 atomisation Methods 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 6
- 239000007789 gas Substances 0.000 abstract description 26
- 238000004065 wastewater treatment Methods 0.000 abstract description 14
- 238000000197 pyrolysis Methods 0.000 abstract description 7
- 238000002309 gasification Methods 0.000 abstract description 6
- 239000000126 substance Substances 0.000 abstract description 6
- 239000002918 waste heat Substances 0.000 abstract description 6
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 14
- 238000004939 coking Methods 0.000 description 7
- 229910021529 ammonia Inorganic materials 0.000 description 6
- 239000007788 liquid Substances 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000010411 cooking Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- YJTKZCDBKVTVBY-UHFFFAOYSA-N 1,3-Diphenylbenzene Chemical group C1=CC=CC=C1C1=CC=CC(C=2C=CC=CC=2)=C1 YJTKZCDBKVTVBY-UHFFFAOYSA-N 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- 150000001555 benzenes Chemical class 0.000 description 1
- 238000005842 biochemical reaction Methods 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000009903 catalytic hydrogenation reaction Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000012824 chemical production Methods 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B27/00—Arrangements for withdrawal of the distillation gases
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
- C02F2103/36—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32 from the manufacture of organic compounds
Abstract
The invention relates to a treatment device and a treatment method for benzene hydrogenation wastewater. The processing device includes: the coke oven bridge pipe is stored with crude gas; the ejector is arranged in the coke oven bridge pipe and used for spraying benzene hydrogenation wastewater into the coke oven bridge pipe so as to exchange heat between the benzene hydrogenation wastewater and the raw coke oven gas, and thus the benzene hydrogenation wastewater is pyrolyzed and gasified; and the cooling mechanism is installed at the inlet position of the ejector, the benzene hydrogenation wastewater enters the cooling mechanism to cool the contact surface of the ejector, and the cooling mechanism enters the ejector and sprays the cooling mechanism to the coke oven bridge pipe. The method can utilize the waste heat of the coke oven bridge pipe crude gas to carry out pyrolysis gasification on the wastewater generated by the benzene hydrogenation process, so that the wastewater becomes a crude gas component, and the resource reutilization is realized, thereby avoiding the environment pollution caused by the wastewater generated by the benzene hydrogenation process, simultaneously reducing the wastewater treatment cost of the benzene hydrogenation process, and increasing the yield of chemical products.
Description
Technical Field
The invention relates to the technical field of chemical wastewater treatment, in particular to a treatment device and a treatment method for benzene hydrogenation wastewater.
Background
With the rapid development of the organic synthesis industry in China, the demand of industrial pure benzene in China is getting larger and larger, and the petroleum resources are increasingly in short supply, which seriously restricts the yield of crude petroleum benzene, so that the coking crude benzene as another source of pure benzene is more and more important. The coking crude benzene is a byproduct of the coking industry, and can be refined to obtain chemical basic raw materials such as benzene, toluene, xylene and the like. At present, with the increasing demand of high-quality benzene raw materials, the coking crude benzene refining process in China is changing from the traditional liquid-phase acid washing method to the hydrogenation catalytic gas-phase method. At present, the capacity of the benzene hydrogenation device in China reaches 650 ten thousand tons, high-quality triphenyl products can be obtained by the catalytic hydrogenation process, but the generated benzene hydrogenation device wastewater can cause serious environmental pollution. Benzene hydrogenation unit waste water is high ammonia nitrogen, high COD waste water, handles the difficulty, and some units evaporate ammonia after through mixing with coking circulation aqueous ammonia now, and it is high to have remaining aqueous ammonia sulphur, COD like this, leads to evaporating ammonia waste water pollution index height, sulphide height, influences biochemical sewage treatment normal operating, leads to that the index can not reach standard after the sewage treatment.
At present, the method generally adopted at home and abroad is still a method combining a cooking method and a biological treatment method, namely, the cooking method is adopted, the index of the waste water is reduced, and then the waste water enters a traditional biochemical reaction system, but the treatment cost of the waste water of a benzene hydrogenation device is increased, and the problem of waste gas treatment is caused. Therefore, developing new technology and implementing new strategy are effective ways to solve the contradiction between energy crisis and environmental pollution.
Disclosure of Invention
In view of the above problems in the prior art, an object of the present invention is to provide a benzene hydrogenation wastewater treatment apparatus and a treatment method, which can utilize the waste heat (300-800 ℃) of the coke oven bridge pipe crude gas to perform pyrolysis gasification on the wastewater generated by the benzene hydrogenation process, so as to make the wastewater become a crude gas component, and realize resource reutilization, thereby avoiding the environment pollution caused by the wastewater generated by the benzene hydrogenation process, and simultaneously, reducing the wastewater treatment cost of the benzene hydrogenation process and increasing the yield of chemical products.
In order to achieve the above object, the present invention provides a benzene hydrogenation wastewater treatment apparatus, comprising:
the coke oven bridge pipe is stored with raw coke oven gas;
the ejector is arranged in the coke oven bridge pipe and used for spraying benzene hydrogenation wastewater into the coke oven bridge pipe so as to exchange heat between the benzene hydrogenation wastewater and the raw coke oven gas, and thus the benzene hydrogenation wastewater is pyrolyzed and gasified;
and the cooling mechanism is installed at the inlet position of the ejector, the benzene hydrogenation wastewater enters the cooling mechanism to cool the contact surface of the ejector, and the cooling mechanism enters the ejector and sprays the cooling mechanism to the coke oven bridge pipe.
In some embodiments, the temperature reduction mechanism has a hollow cavity structure, and the benzene hydrogenation wastewater enters the cavity structure to cool the contact surface of the ejector and enters the ejector through the cavity structure.
In some embodiments, the injector is a quantitative atomization anti-blocking injector, so that the benzene hydrogenation wastewater is atomized and then sprayed into the coke oven bridge pipe.
In some embodiments, the inner spray aperture of the spray head of the sprayer is 2.0mm, and the spraying amount of the sprayer is less than 1.0m 3 /h。
In some embodiments, a top cover plate is fixed to the top of the coke oven bridge tube, and the injector is mounted to the top cover plate by a fixing mechanism.
In some embodiments, the bottom of the fixing mechanism is fixed to the top cover plate by welding or bonding, and the injector is mounted to the fixing mechanism by internal threads or welding; the cooling mechanism is mounted on the top of the ejector through a bolt.
In some embodiments, the treatment device further comprises a wastewater storage tank, the wastewater storage tank is connected with the inlet of the cooling mechanism through a pipeline, and a spray pump is arranged on the pipeline so as to pump the benzene hydrogenation wastewater in the wastewater storage tank into the cooling mechanism.
In some embodiments, the treatment apparatus further comprises a spray pump interlock mechanism for interlocking the spray pump with a level gauge for detecting the level of the wastewater storage tank to control operation of the treatment apparatus.
In some embodiments, the coke oven bridge pipe is further provided with an ammonia water spraying mechanism, the injector and the ammonia water spraying mechanism are respectively arranged at different positions of the coke oven bridge pipe, and the spraying directions of the injector and the ammonia water spraying mechanism are not overlapped.
The invention provides a treatment method of benzene hydrogenation wastewater, which comprises the following steps:
conveying benzene hydrogenation wastewater generated by a benzene hydrogenation process to a temperature reduction mechanism, cooling a contact surface of an ejector connected with the temperature reduction mechanism by using the benzene hydrogenation wastewater entering the temperature reduction mechanism, and conveying the benzene hydrogenation wastewater into the ejector;
spraying the benzene hydrogenation wastewater in the injector into a coke oven bridge pipe to exchange heat between the benzene hydrogenation wastewater and raw coke gas in the coke oven bridge pipe, so that the benzene hydrogenation wastewater is pyrolyzed and gasified;
the injector is arranged on the coke oven bridge pipe, and the cooling mechanism is arranged at the inlet position of the injector.
Compared with the prior art, the benzene hydrogenation wastewater treatment device and the treatment method provided by the embodiment of the invention introduce the benzene hydrogenation wastewater generated by the benzene hydrogenation process into the coke oven bridge pipe 1 through the ejector, contact with the raw coke oven gas in the coke oven bridge pipe for heat exchange, carry out pyrolysis gasification, can fully utilize waste heat resources such as high-temperature waste heat of the raw coke oven gas (300-800 ℃) in the coking industry as heat sources, and recycle the benzene hydrogenation wastewater after pyrolysis, so that the resource utilization of the wastewater can be realized, the benzene hydrogenation wastewater is prevented from polluting the environment, and the aim of zero discharge of the wastewater is fulfilled. In addition, the benzene hydrogenation wastewater treatment device provided by the embodiment of the invention has the advantages of simple structure, low construction investment and low operation cost, and can effectively reduce the wastewater treatment cost of the benzene hydrogenation process; meanwhile, the benzene hydrogenation wastewater after pyrolysis gasification is used as a raw gas component, so that the yield of chemical products can be increased. In addition, the adoption sets up cooling mechanism in the import position of sprayer can avoid the dry back of waste water to block up the pipeline, and prevents stifled type sprayer through the ration atomizing and can prevent that tar gas from blockking up the shower nozzle.
Drawings
In the drawings, which are not necessarily drawn to scale, like reference numerals may describe similar components in different views. Like reference numerals having letter suffixes or different letter suffixes may represent different instances of similar components. The drawings illustrate various embodiments, by way of example and not by way of limitation, and together with the description and claims, serve to explain the inventive embodiments. The same reference numbers will be used throughout the drawings to refer to the same or like parts, where appropriate. Such embodiments are illustrative, and are not intended to be exhaustive or exclusive embodiments of the present apparatus or method.
FIG. 1 is a schematic structural view of a benzene hydrogenation wastewater treatment apparatus according to an embodiment of the present invention.
Reference numerals are as follows:
1-a coke oven bridge pipe; 2-an ejector; 3-a cooling mechanism; 4-a top cover plate; 5-a fixing mechanism; 6-ammonia water spraying mechanism.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention.
Unless defined otherwise, technical or scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used only to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
In order to keep the following description of the embodiments of the invention clear and concise, a detailed description of known functions and known parts of the invention is omitted.
FIG. 1 is a schematic view showing the structure of a benzene hydrogenation wastewater treatment apparatus according to an embodiment of the present invention (the dotted line in the figure is a spray pattern). As shown in fig. 1, an embodiment of the present invention provides a benzene hydrogenation wastewater treatment apparatus, including:
the coke oven bridge pipe 1 is stored with crude gas;
the ejector 2 is arranged in the coke oven bridge pipe 1 and used for spraying benzene hydrogenation wastewater into the coke oven bridge pipe 1 so as to exchange heat between the benzene hydrogenation wastewater and the raw coke oven gas, and thus the benzene hydrogenation wastewater is pyrolyzed and gasified;
and the cooling mechanism 3 is arranged at the inlet of the ejector 2, and the benzene hydrogenation wastewater enters the cooling mechanism 3 to cool the contact surface of the ejector 2, enters the ejector 2 through the cooling mechanism 3, and is sprayed into the coke oven bridge pipe 1 through the ejector 2.
Specifically, benzene hydrogenation waste water that benzene hydrogenation technology produced can save in advance in the waste water storage tank, and the waste water storage tank passes through the access connection of pipeline and cooling mechanism 3, is equipped with the spray pump on the connecting line of waste water storage tank and cooling mechanism 3 to in pumping the benzene hydrogenation waste water pressure pump in the waste water storage tank into cooling mechanism 3, and then get into sprayer 2, and spray to in the coke oven bridge pipe 1 through sprayer 2.
In other embodiments, a waste water storage tank is not required, and the benzene hydrogenation waste water generated in the benzene hydrogenation process can be directly pumped into the temperature reduction mechanism 3 through a spray pump. In the embodiment of the invention, the benzene hydrogenation wastewater can be buffered by arranging the wastewater storage tank, and meanwhile, the benzene hydrogenation wastewater entering the ejector 2 can be accurately controlled.
According to the benzene hydrogenation wastewater treatment device provided by the embodiment of the invention, the benzene hydrogenation wastewater generated by the benzene hydrogenation process is introduced into the coke oven bridge pipe 1 through the injector 2, and is contacted with the raw coke oven gas in the coke oven bridge pipe 1 for heat exchange to carry out pyrolysis gasification, so that the waste heat resources such as the high-temperature waste heat of the raw coke oven gas (300-800 ℃) in the coking industry can be fully utilized as heat sources, the benzene hydrogenation wastewater is pyrolyzed and then reused, the resource utilization of the wastewater can be realized, the benzene hydrogenation wastewater is prevented from polluting the environment, and the aim of zero discharge of the wastewater is fulfilled. In addition, the benzene hydrogenation wastewater treatment device provided by the embodiment of the invention has the advantages of simple structure, low construction investment and low operation cost, and can effectively reduce the wastewater treatment cost of the benzene hydrogenation process; meanwhile, the benzene hydrogenation wastewater after pyrolysis and gasification is used as a raw coke oven gas component, so that the yield of chemical products can be increased.
In the embodiment of the invention, the cooling mechanism 3 is fixedly connected with the ejector 2 in a bolt connection mode and the like. Cooling mechanism 3 has hollow cavity structure, and benzene hydrogenation waste water passes through the pipeline and gets into cavity structure utilizes the space of cavity structure, can hold more waste water, with the contact surface parcel of sprayer 2, can the effectual temperature that reduces 2 contact surfaces of sprayer, prevents 2 heat transfer of sprayer and with benzene hydrogenation waste water evaporation to dryness to prevent the pipe blockage. The benzene hydrogenation waste water simultaneously enters the ejector 2 through the cavity structure, and the benzene hydrogenation waste water is sprayed into the coke oven bridge pipe 1 through the ejector 2.
Preferably, the injector 2 is a quantitative atomization anti-blocking injector, and can atomize the benzene hydrogenation wastewater and spray the atomized benzene hydrogenation wastewater into the coke oven bridge pipe 1, and meanwhile, can quantitatively control the benzene hydrogenation wastewater entering the coke oven bridge pipe 1. In addition, the quantitative atomization anti-blocking type ejector can ensure the atomization effect of the benzene hydrogenation wastewater and prevent the nozzle of the ejector 2 from being blocked by tar gas in the raw coke oven gas.
In specific implementation, the aperture size of the inner jet hole of the spray head of the injector 2 and the field installation mode of the injector 2 can be determined through a field spraying test, so that the spray head is prevented from being blocked by tar gas.
Preferably, the inner spray aperture of the nozzle head of the sprayer 2 is 2.0mm, and the spraying amount of the sprayer 2 is less than 1.0m 3 And h, ensuring the heat exchange efficiency and simultaneously fully contacting and mixing the benzene hydrogenation wastewater and the crude gas in the coke oven bridge pipe 1. For example, the spraying amount of the sprayer 2 is less than 1.0m 3 The method can prevent excessive spraying amount of the benzene hydrogenation wastewater, so that part of the benzene hydrogenation wastewater cannot be contacted and mixed with the raw coke oven gas.
Further, the pressurizing pressure of the spray pump is preferably 0.5MPa, so that the benzene hydrogenation wastewater can be smoothly pumped into the temperature reduction mechanism 3.
In the embodiment of the present invention, the cross-sectional shape of the ejector 2 may be a circular shape, a square shape, or the like, and the present invention is not particularly limited. In specific implementation, the cross section of the injector 2 is preferably circular, so that the atomization spraying effect of the benzene hydrogenation wastewater can be ensured, and meanwhile, the accumulation of part of the benzene hydrogenation wastewater can be prevented.
In some embodiments, a top cover plate 4 is fixed on the top of the coke oven bridge 1, and the injector 2 is mounted on the top cover plate 4 through a fixing mechanism 5.
Specifically, the top cover plate 4 is fixed on the top of the coke oven bridge pipe 1 in a detachable connection mode through bolts and the like, so that the injector 2 is convenient to mount. The bottom of the fixing mechanism 5 is fixed to the top cover plate 4 by welding or bonding, and the injector 2 is mounted to the fixing mechanism 5 by internal threads or welding. The cooling mechanism 3 is mounted on the top of the ejector 2 through bolts. The top cover plate 4 is preferably made of carbon steel, so that the fixing mechanism 5 can be conveniently installed.
In some embodiments, as shown in fig. 1, an ammonia spraying mechanism 6 is further installed on the coke oven bridge pipe 1, and the injector 2 and the ammonia spraying mechanism 6 are respectively arranged at different positions of the coke oven bridge pipe 1 so as to respectively spray. The sprayer 2 and the ammonia water spraying mechanism 6 can spray respectively along different directions, and the spraying directions of the sprayer 2 and the ammonia water spraying mechanism 6 are not overlapped and do not influence each other.
The coke oven bridge pipe 1 is provided at the top with a cover plate, preferably a cast iron cover plate, for fixing the ammonia spraying mechanism 6, while ensuring reliable connection and fixation, so as to prevent the ammonia from corroding the bridge pipe.
In some embodiments, the apparatus for treating benzene-hydrogenated wastewater further comprises a spray pump interlocking mechanism for interlocking the spray pump with a level gauge for detecting a liquid level of a wastewater storage tank to control operation of the apparatus. Specifically, spray pump interlocking gear can be according to the liquid level change control spray pump of waste water storage tank open and stop to can control the work of cooling mechanism 3 and sprayer 2.
After the spraying pump interlocking mechanism detects that the waste water storage tank reaches a certain liquid level, the spraying pump is controlled to be started and pressurized to 0.5MPa, so that the benzene hydrogenation waste water in the waste water storage tank enters the cooling mechanism 3, is filled with the cavity structure therein, cools the contact surface of the injector 2, enters the coke oven bridge pipe 1 through the injector 2 to be atomized and sprayed, and is pyrolyzed and gasified after being in contact with and heat-exchanged with the crude gas in the coke oven bridge pipe 1.
The spray pump interlock also prevents air from entering the coke oven bridge 1 through the spray pump. Specifically, benzene hydrogenation waste water enters into coke oven bridge pipe 1 after being pressurized through the spray pump and is sprayed, when the liquid level of the waste water storage tank drops to a certain position (the position can be set manually), the spray pump can be controlled to stop through the spray pump interlocking mechanism, air is prevented from entering into coke oven bridge pipe 1 through the spray pump and mixing with coal gas, explosive mixed gas is formed, and safe and reliable operation of a treatment device is guaranteed.
The embodiment of the invention also provides a treatment method of the benzene hydrogenation wastewater, which comprises the following steps:
s1: conveying benzene hydrogenation wastewater generated by a benzene hydrogenation process to a temperature reduction mechanism 3, cooling a contact surface of an ejector 2 connected with the temperature reduction mechanism 3 by using the benzene hydrogenation wastewater entering the temperature reduction mechanism 3, and conveying the benzene hydrogenation wastewater into the ejector 2;
s2: spraying the benzene hydrogenation wastewater in the injector 2 into a coke oven bridge pipe 1 to exchange heat between the benzene hydrogenation wastewater and raw coke oven gas in the coke oven bridge pipe 1, so that the benzene hydrogenation wastewater is pyrolyzed and gasified;
the ejector 2 is mounted on the coke oven bridge pipe 1, and the cooling mechanism 3 is mounted at the inlet position of the ejector 2.
The apparatus and method for treating benzene-containing wastewater provided by the embodiments of the present invention correspond to each other, and therefore, based on the apparatus and method for treating benzene-containing wastewater, those skilled in the art can understand the specific implementation of the treatment method and various modifications thereof in the embodiments of the present invention, and the detailed description of the treatment method is omitted here. So long as those skilled in the art can practice the method for treating benzene hydrogenation wastewater using the treatment device in the embodiment of the present invention, they are within the protection scope of the present invention.
In the above embodiments, the treatment apparatus and the treatment method are used for treating benzene hydrogenation wastewater, and in specific implementation, the treatment apparatus may also be used for treating high-concentration wastewater generated in other chemical production.
The above embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and the scope of the present invention is defined by the claims. Various modifications and equivalents may be made by those skilled in the art within the spirit and scope of the present invention, and such modifications and equivalents should also be considered as falling within the scope of the present invention.
Claims (10)
1. A benzene hydrogenation effluent's processing apparatus, characterized by includes:
the coke oven bridge pipe is stored with raw coke oven gas;
the ejector is arranged in the coke oven bridge pipe and used for spraying benzene hydrogenation wastewater into the coke oven bridge pipe so as to exchange heat between the benzene hydrogenation wastewater and the raw coke oven gas and pyrolyze and gasify the benzene hydrogenation wastewater;
the cooling mechanism is installed in the inlet position of the ejector, the benzene hydrogenation wastewater enters the cooling mechanism to cool the contact surface of the ejector, and the cooling mechanism enters the ejector, and the ejector is sprayed to the inner part of the coke oven bridge pipe.
2. The treatment device according to claim 1, wherein the temperature reduction mechanism has a hollow cavity structure, and the benzene hydrogenation wastewater enters the cavity structure to cool the contact surface of the ejector and enters the ejector through the cavity structure.
3. The treatment device according to claim 1, wherein the injector is a quantitative atomization anti-blocking injector, so that the benzene hydrogenation wastewater is atomized and sprayed into the coke oven bridge pipe.
4. The processing apparatus as claimed in claim 1, wherein the inner spray aperture of the nozzle head of the sprayer is 2.0mm, and the spraying amount of the sprayer is less than 1.0m 3 /h。
5. The processing apparatus of claim 1, wherein a top cover plate is secured to a top of the coke oven bridge tube, the injector being mounted to the top cover plate by a securing mechanism.
6. The processing apparatus according to claim 5, wherein the bottom of the fixing means is fixed to the top cover plate by welding or bonding, and the injector is mounted to the fixing means by internal thread or welding; the cooling mechanism is mounted on the top of the ejector through a bolt.
7. The treatment device according to claim 1, further comprising a wastewater storage tank, wherein the wastewater storage tank is connected with an inlet of the temperature reduction mechanism through a pipeline, and a spray pump is arranged on the pipeline so as to pump the benzene hydrogenation wastewater in the wastewater storage tank into the temperature reduction mechanism.
8. The treatment apparatus of claim 7, further comprising a spray pump interlock mechanism for interlocking the spray pump with a level gauge for detecting a level of the wastewater storage tank to control operation of the treatment apparatus.
9. The processing device according to claim 1, wherein an ammonia water spraying mechanism is further installed on the coke oven bridge pipe, the injector and the ammonia water spraying mechanism are respectively arranged at different positions of the coke oven bridge pipe, and the spraying directions of the injector and the ammonia water spraying mechanism are not overlapped.
10. A treatment method of benzene hydrogenation wastewater is characterized by comprising the following steps:
conveying benzene hydrogenation wastewater generated by a benzene hydrogenation process to a temperature reduction mechanism, cooling a contact surface of an ejector connected with the temperature reduction mechanism by using the benzene hydrogenation wastewater entering the temperature reduction mechanism, and conveying the benzene hydrogenation wastewater into the ejector;
spraying the benzene hydrogenation wastewater in the injector into a coke oven bridge pipe to exchange heat between the benzene hydrogenation wastewater and raw coke gas in the coke oven bridge pipe, so that the benzene hydrogenation wastewater is pyrolyzed and gasified;
the ejector is mounted on the coke oven bridge pipe, and the cooling mechanism is mounted at the inlet of the ejector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110458938.8A CN115246662A (en) | 2021-04-27 | 2021-04-27 | Treatment device and treatment method for benzene hydrogenation wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110458938.8A CN115246662A (en) | 2021-04-27 | 2021-04-27 | Treatment device and treatment method for benzene hydrogenation wastewater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115246662A true CN115246662A (en) | 2022-10-28 |
Family
ID=83697271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110458938.8A Pending CN115246662A (en) | 2021-04-27 | 2021-04-27 | Treatment device and treatment method for benzene hydrogenation wastewater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115246662A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1328479A (en) * | 1998-10-01 | 2001-12-26 | 阿姆巴克国际公司 | Fluid-cooled injector |
| CN204344211U (en) * | 2014-12-15 | 2015-05-20 | 东莞市长原喷雾技术有限公司 | A kind of urea nozzle with self-cooling function |
| CN112062194A (en) * | 2020-08-05 | 2020-12-11 | 国家能源集团煤焦化有限责任公司 | Method for treating sulfur-containing sewage and bridge pipe |
-
2021
- 2021-04-27 CN CN202110458938.8A patent/CN115246662A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1328479A (en) * | 1998-10-01 | 2001-12-26 | 阿姆巴克国际公司 | Fluid-cooled injector |
| CN204344211U (en) * | 2014-12-15 | 2015-05-20 | 东莞市长原喷雾技术有限公司 | A kind of urea nozzle with self-cooling function |
| CN112062194A (en) * | 2020-08-05 | 2020-12-11 | 国家能源集团煤焦化有限责任公司 | Method for treating sulfur-containing sewage and bridge pipe |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109453921B (en) | A kind of spraying equipment and its spraying process for cylindrical component | |
| CN101941720B (en) | Tube furnace ammonia evaporation process and equipment | |
| CN201037120Y (en) | Condensation water refined processing high-speed mixing bed | |
| CN103145287B (en) | Method for recovering ammonia and synthesis gas from coking wastewater | |
| CN105152509A (en) | Supercritical reactor, supercritical reaction system and supercritical treatment method of sludge | |
| CN103482835B (en) | Sludge hydrolysis device and hydrolysis process | |
| CN105505471B (en) | A kind of coal-water slurry gasification method for being suitable for processing ammonia nitrogen in high density, COD sewage | |
| CN204939232U (en) | Supercritical reaction device and supercritical reaction system | |
| CN103466874A (en) | High-concentration phenol-ammonia sewage treatment method | |
| CN115246662A (en) | Treatment device and treatment method for benzene hydrogenation wastewater | |
| CN102086251B (en) | Continuous alkali washing method of C5 petroleum resin | |
| CN101037605B (en) | Acid tar processing method | |
| KR102276891B1 (en) | Cement kiln nitrogen oxide reduction device and reduction method using acid fermentation food wastewater and anaerobic digestion wastewater | |
| CN100378012C (en) | Method for treating ammonia nitrogen in charking deposed ammonia | |
| CN113083204A (en) | NMP synthesis process | |
| CN205856407U (en) | A kind of waste heat recovery heating water-coal-slurry is for coal gasification apparatus | |
| US11459260B2 (en) | System and method for treating high-salt high-organic wastewater and recovering energy | |
| CN101941768A (en) | The method for treatment of the spent cuastic | |
| CN103818879B (en) | Tiny structure black liquor gasification method and system device | |
| CN103834441B (en) | A kind of gasification production waste recoverying and utilizing method | |
| CN110669554A (en) | Gasification device for treating waste solids and wastewater | |
| CN101724281A (en) | Method for preparing high strength asphalt by utilizing acid residue | |
| CN211665010U (en) | Entrained flow bed device for efficiently utilizing organic wastewater | |
| CN209076064U (en) | A kind of hybrid gas-liquid mixed vapourizing unit | |
| CN203486931U (en) | Sewage treatment unit for production of coal chemical industry |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |