Anti-pollution vinyl chloride synthesis system

Abstract

The utility model provides an anti-pollution vinyl chloride synthesis system which comprises treatment reaction equipment, a hydrogen chloride supply device, an acetylene supply device and a nitrogen supply device, wherein the treatment reaction equipment is used for generating vinyl chloride; the hydrogen chloride supply device comprises a hydrogen chloride storage tank and a gas pipeline, and the gas pipeline is connected with the treatment reaction equipment hydrogen chloride storage tank and the treatment reaction equipment; the acetylene gas supply device is connected with the treatment reaction equipment through a pipeline; and the nitrogen supply device is communicated with the gas conveying pipeline of the treatment reaction equipment. In the utility model, the nitrogen supply device is connected with the gas conveying pipeline of the hydrogen chloride gas supply device, and when the equipment needs to be replaced and maintained, the nitrogen supply device supplies nitrogen into the gas conveying pipeline, so that residual hydrogen chloride gas in the pipeline and the equipment moves towards the treatment reaction equipment and is reacted, thereby ensuring that no hydrogen chloride gas escapes during replacement and maintenance; the working environment safety of personnel is guaranteed, and the situation that the personnel are in gas is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to vinyl chloride manufacturing equipment technical field especially relates to a kind of pollution-preventing vinyl chloride synthesis system. BACKGROUND

[0002] Vinyl chloride is the monomer of synthetic polyvinyl chloride, and polyvinyl chloride is one of the resins with the largest output in the world, which has good mechanical strength, stable chemical properties, and excellent properties such as easy processing, and is widely used in industry, agriculture, building materials and daily necessities. Vinyl chloride is generally prepared by acetylene method. In order to make the preparation effect of vinyl chloride better, hydrogen chloride gas and acetylene gas need to be dried to ensure the reaction.

[0003] For example, the patent application file CN212492290U provides an acetylene method vinyl chloride raw gas drying system, relating to the acetylene method vinyl chloride process technical field; the drying system includes an acetylene cleaning tower connected with an acetylene gas inlet pipeline and a first sulfuric acid liquid inlet pipeline, a hydrogen chloride drying tower connected with a hydrogen chloride gas inlet pipeline and a second sulfuric acid liquid inlet pipeline, and a mixer, so that the sulfur and phosphorus in the acetylene are cleaned by sulfuric acid in the acetylene cleaning tower, and the water in the acetylene is removed, and the water in the hydrogen chloride is removed by sulfuric acid in the hydrogen chloride drying tower. The mixer is connected with the acetylene gas outlet pipeline and the hydrogen chloride gas outlet pipeline, so that the dried acetylene and hydrogen chloride are mixed in the mixer. By implementing the technical scheme, the technical problem that the existing freezing dehydration process cannot meet the dehydration process requirements can be effectively solved. The acetylene and HCL are dried and dehydrated separately before mixing. The water content of the mixed gas is below 20 ppm, which is much lower than the existing freezing dehydration process, effectively meeting the acetylene method raw gas dehydration process requirements.

[0004] The above scheme has the following problems: the drying capacity of the drying material in the drying tower will gradually decrease. When the drying material in the drying tower is replaced, the residual hydrogen chloride gas in the drying tower and the pipeline will escape, causing pollution to the environment and harming the health of workers. Utility model content

[0005] Therefore, it is necessary to provide a pollution-preventing vinyl chloride synthesis system that can solve the problem of residual hydrogen chloride gas escaping when replacing equipment in the prior art.

[0006] The utility model provides a pollution-preventing vinyl chloride synthesis system, comprising:

[0007] A treatment reaction device is used to treat and react hydrogen chloride and acetylene to generate vinyl chloride.

[0008] A hydrogen chloride gas supply device includes a hydrogen chloride storage tank and a gas pipeline, which is connected to the hydrogen chloride storage tank and the treatment reaction device to supply hydrogen chloride gas.

[0009] an acetylene gas supply device connected to the processing reaction equipment pipeline for supplying acetylene gas; and

[0010] a nitrogen gas supply device connected to the gas supply pipeline for supplying nitrogen gas to evacuate hydrogen chloride in the processing reaction equipment and the gas supply pipeline.

[0011] In some possible solutions, a three-way valve is arranged on the gas supply pipeline, and three ports of the three-way valve are respectively connected to the hydrogen chloride storage tank, the processing reaction equipment and the nitrogen gas supply device.

[0012] In some possible solutions, the hydrogen chloride storage tank is detachably connected to the gas supply pipeline, and a valve for controlling opening and closing of the pipeline is arranged on the gas supply pipeline.

[0013] In some possible solutions, the processing reaction equipment comprises a drying device, a mixing device and a reaction device, an air inlet end of the drying device is connected to the gas supply pipeline and the acetylene gas supply device, an air inlet end of the mixing device is connected to an air outlet end of the drying device, an air inlet end of the reaction device is connected to an air outlet end of the mixing device, the drying device is used for drying hydrogen chloride gas and acetylene gas, the mixing device is used for mixing the hydrogen chloride gas and the acetylene gas to form mixed gas, and the reaction device is used for reacting the mixed gas to generate chloroethylene.

[0014] In some possible solutions, the drying device comprises two first-stage drying modules and two second-stage drying modules, two first-stage drying modules are respectively connected to the hydrogen chloride gas supply device and the acetylene gas supply device, and are respectively used for drying hydrogen chloride gas and acetylene gas, and two second-stage drying modules are respectively connected to the two first-stage drying modules and are used for detecting whether the gas is dry.

[0015] In some possible solutions, the first-stage drying module comprises a plurality of first-stage dryers, an air inlet pipeline and an air outlet pipeline, the air inlet pipeline is connected to air inlet ends of the plurality of first-stage dryers, and the air outlet pipeline is connected to air outlet ends of the plurality of first-stage dryers.

[0016] In some possible solutions, the second-stage drying module comprises a second-stage upper cover, a second-stage tank body and a second-stage lower cover, the second-stage upper cover is detachably connected to one end of the second-stage tank body, the second-stage lower cover is detachably connected to the other end of the second-stage tank body, the second-stage tank body is filled with a drying substance that changes color when coming into contact with water, and an observation window is arranged on a surface of the second-stage tank body, so that the color of the drying substance in the second-stage tank body can be observed.

[0017] In some possible solutions, the mixing device comprises two flow regulating assemblies and a mixing assembly, the gas inlet ends of the two flow regulating assemblies are connected with two secondary drying modules respectively, the gas outlet ends of the two flow regulating assemblies are connected with the gas inlet end of the mixing assembly, and the gas outlet end of the mixing assembly is connected with the reaction device.

[0018] In some possible solutions, the reaction device comprises a reaction tube body, a first sealing member, the reaction tube body is provided with a first opening at one end, gas inlet pipes and gas outlet pipes for gas flow only are respectively formed on the side wall of the reaction tube body, a gas reaction area filled with catalyst for gas reaction is formed in the reaction tube body, and the first sealing member is detachably connected with the first opening to close the gas reaction area.

[0019] In some possible solutions, the reaction device further comprises a heating sleeve, the heating sleeve is sleeved on the outer periphery of the reaction tube body, and a closed heating area is formed between the heating sleeve and the reaction tube body for heating the reaction tube body.

[0020] The utility model discloses beneficial effects are:

[0021] The utility model discloses a processing reaction equipment is used for processing and reacting hydrogen chloride and acetylene to generate chloroethylene, a hydrogen chloride gas supply device including hydrogen chloride storage tank and gas pipeline, the gas pipeline connects hydrogen chloride storage tank with processing reaction equipment, and is used for supplying hydrogen chloride gas, an acetylene gas supply device is connected with processing reaction equipment pipeline, and is used for supplying acetylene gas, a nitrogen supply device, nitrogen supply device is connected with the gas pipeline, and is used for supplying nitrogen to empty hydrogen chloride in processing reaction equipment and gas pipeline. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical scheme in the embodiment of the utility model, the following will be needed to use the drawing in the embodiment description briefly introduces, obviously, the following description in the drawing is only some embodiments of the utility model, for the ordinary skilled person in the art, under the premise of not paying the creative labor, can also obtain other drawings according to these drawings.

[0023] Figure 1 It is a structure schematic view of the pollution prevention vinyl chloride synthesis system in the utility model;

[0024] Figure 2 It is a structure schematic view of the pollution prevention vinyl chloride synthesis system in the utility model; Figure 1 It is a connection schematic view of the hydrogen chloride supply device and the nitrogen supply device in the utility model;

[0025] Figure 3 It is a structure schematic view of the pollution prevention vinyl chloride synthesis system in the utility model; Figure 1 It is a structure schematic view of the pollution prevention vinyl chloride synthesis system in the utility model;

[0026] Figure 4 It is a structure schematic view of the pollution prevention vinyl chloride synthesis system in the utility model; Figure 1 It is a structure schematic view of the pollution prevention vinyl chloride synthesis system in the utility model;

[0027] Figure 5 It is a structure schematic view of the pollution prevention vinyl chloride synthesis system in the utility model; Figure 1 It is a structure schematic view of the pollution prevention vinyl chloride synthesis system in the utility model;

[0028] Figure 6 It is a structure schematic view of the pollution prevention vinyl chloride synthesis system in the utility model; Figure 5 It is a structure schematic view of the pollution prevention vinyl chloride synthesis system in the utility model;

[0029] Wherein: 1-hydrogen chloride supply device, 11-hydrogen chloride storage tank, 12-gas pipeline, 121-three-way valve, 2-acetylene supply device, 3-drying device, 31-first stage drying module, 311-first stage dryer, 311a-first stage upper cover, 311b-first stage tank body, 311c-first stage lower cover, 312-gas inlet pipeline, 312a-gas inlet main pipeline, 312b-gas inlet branch pipeline, 312c-gas inlet valve, 313-gas outlet pipeline, 313a-gas outlet main pipeline, 313b-gas outlet branch pipeline, 313c-gas outlet valve, 32-second stage drying module, 321-second stage upper cover, 322-second stage tank body, 323-second stage lower cover, 4-mixing device, 41-flow regulating assembly, 411-flow meter, 412-regulating valve, 42-mixing assembly, 5-reaction device, 51-reaction tube body, 511-first opening, 511a-first flange, 512-gas inlet pipe, 513-gas outlet pipe, 514-second opening, 514a-second flange, 52-first sealing element, 521-first insertion plug body, 522-first fixing element, 523-catalyst supporting element, 523a-vertical rod, 523b-supporting tray, 523c-ventilation hole, 53-second sealing element, 531-second insertion plug body, 532-second fixing element, 54-heating sleeve, 541-liquid inlet, 542-liquid outlet, 6-nitrogen supply device. DETAILED DESCRIPTION

[0030] The preferred embodiments of the utility model are described in detail below in combination with the drawings, wherein the drawings constitute a part of the present application, and are used together with the embodiments of the utility model to explain the principles of the utility model, and are not used to limit the scope of the utility model.

[0031] As Figure 1 , Figure 2 shown, the embodiment of the utility model provides a kind of pollution prevention vinyl chloride synthesis system, it includes: processing reaction equipment, hydrogen chloride gas supply device, acetylene gas supply device, nitrogen supply device, the processing reaction equipment is handled to hydrogen chloride and acetylene and carries out reaction, generates vinyl chloride;The hydrogen chloride gas supply device 1, including hydrogen chloride storage tank 11 and gas pipeline 12, the gas pipeline 12 is connected the hydrogen chloride storage tank 11 with the processing reaction equipment, for supply hydrogen chloride gas;Acetylene gas supply device 2 is connected with the processing reaction equipment pipeline, for supply acetylene gas;Nitrogen supply device 6, the nitrogen supply device 6 is communicated with the gas pipeline 12, for supply nitrogen to empty hydrogen chloride in the processing reaction equipment and the gas pipeline 12.

[0032] In the utility model, be provided with nitrogen supply device 6, the nitrogen supply device 6 is connected with the gas pipeline of hydrogen chloride gas supply device 1, when needing to replace the equipment in processing reaction equipment and overhaul, nitrogen supply device 6 supplies nitrogen to gas pipeline, makes the hydrogen chloride gas remaining in pipeline and equipment move to processing reaction equipment, and is reacted, to ensure that no hydrogen chloride gas escapes when replacing the equipment in processing reaction equipment and overhaul, guarantee the working environment safety of personnel, avoid the situation that personnel appears gas.

[0033] Specifically, the processing reaction equipment includes drying device 3, mixing device 4 and reaction device 5, the gas inlet end of drying device 3 is connected with the gas pipeline 12, the acetylene gas supply device 2, the gas outlet end of drying device 3 is connected with the gas inlet end of mixing device 4, and the gas outlet end of mixing device 4 is connected with the gas inlet end of reaction device 5.The drying device 3 is used for drying hydrogen chloride gas and acetylene gas, the mixing device 4 is used for mixing hydrogen chloride gas and acetylene gas to form mixed gas, and the reaction device 5 makes the mixed gas react to generate vinyl chloride.

[0034] Specifically, the hydrogen chloride storage tank 11 is detachably connected with the gas pipeline 12, and a valve for controlling the opening and closing of the pipeline is arranged on the gas pipeline 12.When the gas supply in the hydrogen storage tank 11 is insufficient, the valve can be closed, and the hydrogen chloride storage tank 11 can be replaced.

[0035] Specifically, a three-way valve 121 is arranged on the gas pipeline 12, and the three ports of the three-way valve 121 are respectively connected with the hydrogen chloride storage tank 11, the processing reaction equipment and the nitrogen supply device 6.

[0036] Specifically, the acetylene gas supply device 2 is an acetylene storage tank, the acetylene storage tank is connected with the primary drying module 31 through a pipeline, the acetylene storage tank and the pipeline are detachably connected, and a valve for controlling opening and closing of the pipeline is arranged on the pipeline.

[0037] Further, as shown in the figure, Figure 3 The two secondary drying modules 32 are connected with the two primary drying modules 31 respectively, and are used for detecting whether the gas is dried. The secondary drying module 32 can detect whether the gas is completely dried, when the primary drying module 31 cannot dry the gas completely because the drying efficiency of the internal drying material is reduced, the secondary drying module 32 can detect that the gas is not completely dried in time, and the drying capacity of the drying material in the primary drying module 31 is reduced and needs to be replaced, so that the operator can find that the drying material is invalid in time and replace it in time, thereby ensuring the quality of the chloroethylene product.

[0038] Further, the primary drying module 31 comprises a plurality of primary dryers 311, an air inlet pipeline 312 and an air outlet pipeline 313, the air inlet pipeline 312 is connected with air inlet ends of the plurality of primary dryers 311, and the air outlet pipeline 313 is connected with air outlet ends of the plurality of primary dryers 311. In the utility model, the plurality of primary dryers 311 are arranged in parallel, the capacity of the primary drying module 31 for drying the gas in unit time can be enhanced, and the efficiency of drying the gas can be effectively improved.

[0039] Further, the air inlet pipeline 312 comprises an air inlet main pipeline 312a and air inlet branch pipelines 312b, the air inlet branch pipelines 312b are arranged in one-to-one correspondence with the primary dryers 311, one end of the air inlet branch pipeline 312b is connected with the air inlet end of the primary dryer 311, the other end is connected with the air inlet main pipeline 312a, and an air inlet valve 312c for controlling conduction or cut-off of the air inlet branch pipeline 312b is arranged on the air inlet branch pipeline 312b.

[0040] Further, the air outlet pipeline 313 comprises an air outlet main pipeline 313a and air outlet branch pipelines 313b, the air outlet branch pipelines 313b are arranged in one-to-one correspondence with the primary dryers 311, one end of the air outlet branch pipelines 313b is connected with the air outlet end of the primary dryers 311, the other end is connected with the air outlet main pipeline 313a, and the air outlet branch pipelines 313b are provided with air outlet valves 313c for controlling the conduction or cutoff of the air outlet branch pipelines 313b.

[0041] In use, the lossless replacement of the drying substance can be realized by controlling the air inlet valves 312c and the air outlet valves 313c. For example, only part of the air inlet valves 312c and the air outlet valves 313c are opened in use, so that the gas only passes through part of the primary dryers 311, when the secondary drying module 2 located in the primary drying module group 31 is discolored, the currently opened air inlet valves 312c and the air outlet valves 313c are closed, and the air inlet valves 312c and the air outlet valves 313c in the closed state before are opened. The switching of the primary dryers 311 is realized. At this time, the primary dryers 311 with lower efficiency can be removed, and the drying substance inside can be replaced.

[0042] Further, the primary dryers 311 comprise a primary upper cover 311a, a primary tank body 311b and a primary lower cover 311c, one end of the primary upper cover 311a is detachably connected with the primary tank body 311b, the other end of the primary lower cover 311c is detachably connected with the primary tank body 311b, and the primary tank body 311b is filled with a drying substance.

[0043] Further, the primary upper cover 311a comprises a cover body and a wind distribution plate, the wind distribution plate is fixed on the inner wall of the cover body and forms an abutting surface abutting against the primary tank body 311b. The wind distribution plate can uniformly distribute the gas flowing through it, so that the gas can enter the primary tank body 311b at a uniform speed, improving the drying effect of the gas. In addition, the wind distribution plate can also support the drying substance in the primary tank body 311b.

[0044] In this embodiment, the drying substance in the primary tank body 311b is one of a molecular sieve desiccant or alumina, and the molecular sieve desiccant and alumina have good drying effect.

[0045] Specifically, the secondary drying module 32 comprises a secondary upper cover 321, a secondary tank body 322 and a secondary lower cover 323. The secondary upper cover 321 is detachably connected with one end of the secondary tank body 322, and the secondary lower cover 323 is detachably connected with the other end of the secondary tank body 322. The secondary tank body 322 is filled with a drying substance which changes color when meeting water. An observation window is arranged on the surface of the secondary tank body 322, so as to facilitate observation of the color of the drying substance in the secondary tank body 322.

[0046] In the embodiment, the substance filled in the secondary tank body 322 is color-changing silica gel. The main component of the color-changing silica gel is cobalt chloride which has strong toxicity and strong adsorption to water vapor in the air. The color-changing silica gel can display different colors by changing the amount of crystal water of the contained cobalt chloride, i.e., gradually changing from blue before absorbing moisture to light red with the increase of the amount of absorbed moisture. The user can observe the color of the color-changing silica gel in the secondary tank body 322 through the observation window on the surface of the secondary tank body 322. Once the color-changing silica gel changes color, it indicates that the drying efficiency of the primary drying module 31 decreases and needs to be replaced.

[0047] Specifically, as shown in Figure 4 The mixing device 4 comprises two flow regulating assemblies 41 and a mixing assembly 42. The gas inlet ends of the two flow regulating assemblies 41 are connected with the two secondary drying modules 32 respectively, the gas outlet ends of the two flow regulating assemblies 41 are connected with the gas inlet end of the mixing assembly 42, and the gas outlet end of the mixing assembly 42 is connected with the reaction device 5. The flow regulating assemblies 41 are used to regulate the flow rate of the gas, so that the hydrogen chloride gas and the acetylene gas are introduced into the mixing assembly 42 according to a specific ratio, and the mixing assembly 42 is used to mix the gas and then send it into the reaction device 5 for reaction.

[0048] Further, the flow regulating assembly 41 comprises a flow meter 411 and a regulating valve 412. The gas inlet end of the flow meter 411 is connected with the secondary drying module 32, the gas outlet end of the flow meter 411 is connected with the regulating valve 412, and the regulating valve 412 is connected with the gas inlet end of the mixing assembly 42. In use, the user can adjust the regulating valve 412 according to the flow detected by the flow meter 411, so that the hydrogen chloride gas and the acetylene gas are introduced into the mixing assembly 42 according to a specific ratio.

[0049] Further, the mixing assembly 42 comprises a mixing tank, a stirring motor, a stirring shaft and stirring blades, the mixing tank is provided with an inlet valve connected with the flow regulating assembly 41 and an outlet valve connected with the reaction device 5, the stirring motor is fixed on the mixing tank, one end of the stirring shaft is fixed with the output end of the stirring motor and the other end extends into the mixing tank, and the stirring blades are fixed on one end of the stirring shaft in the mixing tank. In use, the flow regulating assembly 41 introduces hydrogen chloride gas and acetylene gas into the mixing tank according to a specific ratio, and the stirring motor drives the stirring blades to rotate to quickly mix the hydrogen chloride gas and the acetylene gas.

[0050] Specifically, as shown in Figure 5 、 Figure 6 The reaction device 5 comprises a reaction tube body 51 and a first sealing member 52, one end of the reaction tube body 51 is provided with a first opening 511, the side wall of the reaction tube body 51 is respectively extended to form a gas inlet pipe 512 and a gas outlet pipe 513 for gas flow only, a gas reaction area for filling catalyst and for gas reaction is formed in the reaction tube body 51, and the first sealing member 52 is detachably connected with the first opening 511 to close the gas reaction area. The catalyst is directly placed in the reaction tube body 51, and the first opening 511 is arranged at both ends of the reaction tube body 51; in use, the gas is introduced into the reaction tube body 51 from the gas inlet pipe 512 and directly contacts with the catalyst to improve the reaction efficiency, and the gas after reaction is discharged from the gas outlet pipe 513; when the catalyst needs to be replaced, the first sealing member 52 is only needed to be detached from the first opening 511, the catalyst in the reaction tube body 51 is poured out, the new catalyst is put in, and finally the first sealing member 52 is connected and fixed with the first opening 511.

[0051] Specifically, the reaction tube body 51 is in a cylindrical shape and arranged in a vertical direction, and the first opening 511 is arranged at the lower end of the reaction tube body 51.

[0052] Further, the gas inlet pipe 512 is closer to the first opening 511 than the gas outlet pipe 513, and the gas outlet pipe 513 is farther away from the first opening 511 than the gas inlet pipe 512. The purpose of this design is to make the gas enter the reaction tube body 51 from the lower side and be discharged from the upper side, so that the gravity can prolong the residence time of the gas in the reaction tube body 51, thereby increasing the contact time with the catalyst and improving the reaction effect.

[0053] Specifically, the first sealing member 52 comprises a first plug body 521 and a first fixing member 522. The first plug body 521 is at least partially inserted into the first opening 511 and is in interference fit with the inside of the reaction tube 51. The first fixing member 522 is fixed to the portion of the first plug body 521 outside the reaction tube 51. The first fixing member 522 is detachably fixed to the reaction tube 51.

[0054] In the present embodiment, the end of the reaction tube 51, where the first opening 511 is located, extends to form a first flange 511a. The first fixing member 522 is detachably connected to the first flange 511a by means of bolts. When the gas reaction is carried out, the first fixing member 522 is locked to the first flange 511a by means of bolts, and the first plug body 521 closes the first opening 511, so that the catalyst is enclosed in the gas reaction area. When the catalyst needs to be replaced, the bolts between the first fixing member 522 and the first flange 511a are removed, the first plug body 521 is pulled out of the first opening 511, and the catalyst is poured out of the first opening 511. Then, the new catalyst is put into the first opening 511, the first plug body 521 is inserted into the first opening 511, and the first fixing member 522 is fixed to the first flange 511a by means of bolts. In this way, the replacement of the catalyst is completed.

[0055] Further, the first sealing member 52 further comprises a catalyst support 523. The catalyst support 523 is fixed to the portion of the first plug body 521 inserted into the first opening 511, and is used to support the catalyst in the reaction tube 51.

[0056] Further, the catalyst support 523 comprises a vertical rod 523a and a support tray 523b. The vertical rod 523a is vertically arranged, and one end of the vertical rod 523a is fixed to the first plug body 521. The support tray 523b is fixed to the other end of the vertical rod 523a. The outer diameter of the support tray 523b matches the inner diameter of the reaction tube 51.

[0057] Further, as shown in Figure 2 The support tray 523b is provided with a plurality of air permeable holes 523c. The diameter of the air permeable holes 523c is smaller than the diameter of the catalyst particles. The purpose of the air permeable holes 523c is to allow the gas flow.

[0058] Further, the reaction device 5 further comprises a second sealing member 53. The other end of the reaction tube 51 is provided with a second opening 514. The second sealing member 53 is detachably connected to the second opening 514. The second sealing member 53 is provided with a temperature detection device 533, which is used to detect the reaction temperature in the reaction tube 51.

[0059] Further, the second sealing member 53 comprises a second insertion plug 531 and a second fixing member 532, the second insertion plug 531 is capable of being inserted into the second opening 514 at least partially and is in interference fit with the inside of the reaction tube 51, the second fixing member 532 is fixed with the part of the second insertion plug 531 which is outside the reaction tube 51, the second fixing member 532 is detachably fixed with the reaction tube 51, and a temperature detecting device 533 is fixed on the second insertion plug 531.

[0060] Correspondingly, in the embodiment, the reaction tube 51 is provided with a second flange 514a which is formed by extending the end of the second opening 514, and the second fixing member 532 is detachably connected with the second flange 514a through bolts.

[0061] Specifically, the reaction device 5 further comprises a heating sleeve 54, the heating sleeve 54 is sleeved on the outer periphery of the reaction tube 51, and a closed heating area is formed between the heating sleeve 54 and the reaction tube 51, which is used for heating the reaction tube 51 to make the gas react.

[0062] Further, the heating sleeve 54 is provided with a liquid inlet 541 and a liquid outlet 542, and the liquid inlet 541 and the liquid outlet 542 are in communication with the heating area. In use, the liquid inlet 541 and the liquid outlet 542 are in communication with external heating equipment, and the liquid heated by the external equipment is introduced into the heating area, so as to heat the reaction tube 51 and the gas reaction area in the reaction tube 51.

[0063] Further, the distance between the liquid inlet 541 and the first opening 511 is less than the distance between the liquid outlet 542 and the first opening 511. The purpose of such arrangement is to prolong the contact time of the liquid with the reaction tube 51, so as to guarantee the heating effect on the reaction tube 51 and the gas reaction area in the reaction tube 51.

[0064] The utility model has the advantages of:

[0065] The utility model discloses a processing reaction equipment for processing and reacting hydrogen chloride and acetylene to generate chloroethylene, a hydrogen chloride gas supply device, an acetylene gas supply device and a nitrogen supply device.

[0066] The above is only a preferred embodiment of the present application, and the scope of protection of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed by the present application, which shall be covered within the scope of protection of the present application.

Claims

1. A pollution-free vinyl chloride synthesis system characterized by comprising: The application relates to a hydrogen chloride and acetylene processing and reaction device. The device comprises: a processing and reaction device for processing and reacting hydrogen chloride and acetylene to generate chloroethylene; a hydrogen chloride gas supply device comprising a hydrogen chloride storage tank and a gas pipeline connected to the hydrogen chloride storage tank and the processing and reaction device, for supplying hydrogen chloride gas in the hydrogen chloride storage tank to the processing and reaction device; an acetylene gas supply device connected to the processing and reaction device pipeline, for supplying acetylene gas to the processing and reaction device; and a nitrogen supply device connected to the gas pipeline, for supplying nitrogen to exhaust hydrogen chloride in the processing and reaction device and the gas pipeline. A three-way valve is arranged on the gas pipeline, and three ports of the three-way valve are respectively connected to the hydrogen chloride storage tank, the processing and reaction device and the nitrogen supply device. The hydrogen chloride storage tank and the gas pipeline are detachably connected, and a valve for controlling opening and closing of the gas pipeline is arranged on the gas pipeline. The processing and reaction device comprises a drying device, a mixing device and a reaction device, the gas inlet end of the drying device is connected to the gas pipeline and the acetylene gas supply device, the gas outlet end of the drying device is connected to the gas inlet end of the mixing device, the gas outlet end of the mixing device is connected to the gas inlet end of the reaction device, the drying device is used for drying hydrogen chloride gas and acetylene gas, the mixing device is used for mixing hydrogen chloride gas and acetylene gas to form mixed gas, and the reaction device is used for reacting the mixed gas to generate chloroethylene. The drying device comprises two first-stage drying modules and two second-stage drying modules, the two first-stage drying modules are respectively connected to the hydrogen chloride gas supply device and the acetylene gas supply device, and are respectively used for drying hydrogen chloride gas and acetylene gas, and the two second-stage drying modules are respectively connected to the two first-stage drying modules and are used for detecting whether the gas is dry.

2. The pollution control vinyl chloride synthesis system of claim 1, wherein, The first-stage drying module comprises a plurality of first-stage dryers, a gas inlet pipeline and a gas outlet pipeline, the gas inlet pipeline is connected to the gas inlet ends of the first-stage dryers, and the gas outlet pipeline is connected to the gas outlet ends of the first-stage dryers.

3. The pollution control vinyl chloride synthesis system of claim 1, wherein, The second-stage drying module comprises a second-stage upper cover, a second-stage tank body and a second-stage lower cover, the second-stage upper cover is detachably connected to one end of the second-stage tank body, the second-stage lower cover is detachably connected to the other end of the second-stage tank body, the second-stage tank body is filled with water-color-changing drying substances, and an observation window is arranged on the surface of the second-stage tank body, so that the color of the drying substances in the second-stage tank body can be observed.

4. The pollution control vinyl chloride synthesis system of claim 1, wherein, The mixing device comprises two flow regulating components and a mixing component, the gas inlet ends of the two flow regulating components are respectively connected to the two second-stage drying modules, the gas outlet ends of the two flow regulating components are connected to the gas inlet end of the mixing component, and the gas outlet end of the mixing component is connected to the reaction device.

5. The pollution control vinyl chloride synthesis system of claim 4, wherein, ​ 6. The pollution control vinyl chloride synthesis system of claim 5, wherein, ​ 7. The pollution control vinyl chloride synthesis system of claim 5, wherein, ​ 8. The pollution control vinyl chloride synthesis system of claim 5, wherein, ​ 9. The pollution control vinyl chloride synthesis system of claim 7, wherein, The reaction device comprises a reaction tube body, a first sealing member, one end of the reaction tube body is provided with a first opening, a gas inlet pipe and a gas outlet pipe are respectively formed on the side wall of the reaction tube body, the gas inlet pipe and the gas outlet pipe are only used for gas flow, a gas reaction area filled with catalyst and used for gas reaction is formed in the reaction tube body, and the first sealing member is detachably connected with the first opening to close the gas reaction area.

10. The pollution control vinyl chloride synthesis system of claim 9, wherein, The reaction device further comprises a heating sleeve pipe, the heating sleeve pipe is sleeved on the outer periphery of the reaction tube body, a closed heating area is formed between the heating sleeve pipe and the reaction tube body, and the reaction tube body is heated.

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