Waste heat grading recovery device for vinyl chloride converter

Abstract

The utility model relates to the technical field of vinyl chloride production, and discloses a vinyl chloride converter waste heat grading recovery device which comprises a converter main body fixedly connected with a steam exhaust port, and further comprises a steam treatment assembly installed on the steam exhaust port, a water storage tank I connected with the steam treatment assembly is mounted on one side of the converter main body; the water conveying assembly I is mounted between the converter main body and the water storage tank I; circulating water in the second water storage tank is heated through high-temperature steam, then the high-temperature steam is conveyed to the lithium bromide unit through the second water conveying assembly to provide energy for refrigeration of the lithium bromide unit, meanwhile, part of the high-temperature steam is condensed and liquefied in the condensation tank and falls into the first water storage tank again, and energy is saved. The steam is conveyed into the converter main body through the first water conveying assembly to be recycled, so that the situations that a large amount of steam is emptied, great resource waste is caused, soft water needs to be supplemented, water resources are wasted and the cost is increased are avoided.

Description

Technical Field

[0001] This utility model relates to the field of vinyl chloride production technology, specifically to a waste heat recovery device for vinyl chloride converters. Background Technology

[0002] Vinyl chloride conversion refers to the gas-phase addition of acetylene and hydrogen chloride to synthesize vinyl chloride under the catalysis of mercuric chloride. During vinyl chloride conversion, a large amount of heat is released from the reaction system. Currently, this is addressed by circulating hot water into the jacket of the reaction tank. The hot water absorbs the large amount of heat generated in the reaction system, ensuring a stable temperature. After absorbing the heat generated during the vinyl chloride conversion, the hot water returns to the hot water storage tank. Because the hot water absorbs heat, its temperature further increases, thus generating a large amount of steam.

[0003] To protect the equipment from pressure damage, hot water storage tanks are generally designed to be open, which allows a large amount of steam to evaporate into the atmosphere. This results in a significant waste of resources, and at the same time, soft water needs to be added, wasting water resources and increasing costs. Utility Model Content

[0004] The purpose of this invention is to provide a waste heat recovery device for vinyl chloride converters to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a waste heat recovery device for a vinyl chloride converter, comprising a converter body, wherein a steam exhaust port is fixedly connected to the converter body, and further comprising:

[0006] A steam treatment assembly capable of closed-loop steam processing is installed on the steam outlet, and a water storage tank connected to the steam treatment assembly is installed on one side of the converter body.

[0007] Water delivery component one is installed between the converter body and water storage tank one;

[0008] Water storage tank two is installed on one side of water storage tank one. A lithium bromide generator is installed on one side of water storage tank two. Water conveying assembly two is installed between water storage tank two and lithium bromide generator.

[0009] Preferably, the steam treatment assembly includes a steam transmission pipe fixedly connected to a steam outlet, and a condenser is fixedly connected to the end of the steam transmission pipe away from the steam outlet. The bottom of the condenser is fixedly connected to the top of a water storage tank.

[0010] Preferably, the water supply component includes a water supply pipe fixedly connected to the converter body, and a circulation pump is installed on the water supply pipe.

[0011] Preferably, the second water supply component includes a second water supply pipe fixedly connected between the second water storage tank and the lithium bromide unit, and a second circulation pump is installed on the second water supply pipe.

[0012] Preferably, a branch of the steam pipe is fixedly connected to the top of the second water storage tank.

[0013] Preferably, the steam transmission pipe is a tee pipe.

[0014] Preferably, the bottom of the converter body, water tank one, and water tank two are all fixedly installed with mounting bases.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] In this invention, high-temperature steam is used to heat the circulating water in the second water storage tank, and then the water is transported to the lithium bromide unit through the second water conveying component to provide energy for the cooling of the lithium bromide unit. At the same time, a portion of the high-temperature steam is condensed and liquefied in the condenser and falls back into the first water storage tank. It is then transported to the main body of the converter through the first water conveying component for recycling, avoiding the large amount of steam being discharged, which would cause a great waste of resources. In addition, soft water needs to be added at the same time, which would waste water resources and increase costs. Attached Figure Description

[0017] Figure 1 A schematic diagram of the waste heat recovery device for a vinyl chloride converter provided by this utility model;

[0018] Figure 2 Another perspective view of the waste heat recovery device for the vinyl chloride converter provided by this utility model;

[0019] Figure 3 A schematic diagram of the steam treatment component structure provided by this utility model;

[0020] Figure 4 A schematic diagram of the bottom structure of the converter body provided by this utility model.

[0021] In the diagram: 1. Converter body; 2. Steam outlet; 3. Steam treatment assembly; 301. Steam pipe; 302. Condensate tank; 4. Water storage tank 1; 5. Water supply assembly 1; 501. Water supply pipe 1; 502. Circulation pump 1; 6. Water supply assembly 2; 601. Water supply pipe 2; 602. Circulation pump 2; 7. Lithium bromide unit; 8. Water storage tank 2; 9. Mounting base. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-4 As shown, a waste heat recovery device for a vinyl chloride converter includes a converter body 1, a steam outlet 2 fixedly connected to the converter body 1, and a steam treatment component 3 capable of closed-loop steam treatment installed on the steam outlet 2. The steam treatment component 3 treats the steam discharged from the converter body 1. A water storage tank 4 connected to the steam treatment component 3 is installed on one side of the converter body 1. A water conveying component 5 is installed between the converter body 1 and the water storage tank 4, and the water conveying component 5 circulates water between the water storage tank 4 and the converter body 1. A second water storage tank 8 is installed on one side of the water storage tank 4. A lithium bromide generator 7 is installed on one side of the second water storage tank 8. A second water conveying component 6 is installed between the second water storage tank 8 and the lithium bromide generator 7, and the water conveying component 6 circulates water between the second water storage tank 8 and the lithium bromide generator 7.

[0024] It should be noted that: the high-temperature steam in the main body of the converter 1 is transferred to the second water storage tank 8 through the steam transmission pipe 301. The second water transmission assembly 6 transfers the circulating water in the lithium bromide unit 7 to the second water storage tank 8. The high-temperature steam heats the circulating water in the second water storage tank 8 and then sends it to the lithium bromide unit 7 through the second water transmission assembly 6 to provide energy for the cooling of the lithium bromide unit 7. At the same time, a part of the high-temperature steam is condensed and liquefied in the condenser tank 302 and falls back into the first water storage tank 4. It is then sent to the main body of the converter 1 through the first water transmission assembly 5 for recycling.

[0025] The steam treatment assembly 3 includes a steam pipe 301 fixedly connected to the steam outlet 2. A condenser 302 is fixedly connected to one end of the steam pipe 301 away from the steam outlet 2. The bottom of the condenser 302 is fixedly connected to the top of the water storage tank 4. A branch of the steam pipe 301 is fixedly connected to the top of the water storage tank 8. The steam pipe 301 is a three-way pipe. The steam pipe 301 transmits the high-temperature steam in the converter body 1 to the condenser 302 for condensation treatment. The condensed water falls into the water storage tank 4 and is then transmitted back to the converter body 1 for reuse using the water conveying assembly 5.

[0026] The water supply assembly 5 includes a water supply pipe 501 fixedly connected to the converter body 1. A circulation pump 502 is installed on the water supply pipe 501, and water is circulated between the converter body 1 and the water storage tank 4 through the circulation pump 502 and the water supply pipe 501.

[0027] Water supply assembly 26 includes a water supply pipe 2601 fixedly connected between water storage tank 28 and lithium bromide unit 7, and a circulation pump 2602 is installed on the water supply pipe 2601; water is circulated between water storage tank 28 and lithium bromide unit 7 through the circulation pump 2602.

[0028] The bottom of the converter body 1, water storage tank 4 and water storage tank 8 are all fixedly installed with a fixing seat 9; the fixing seat 9 can improve the stability of the converter body 1, water storage tank 4 and water storage tank 8 during operation.

[0029] Working principle: High-temperature steam in the converter body 1 is transferred to the water storage tank 8 through the steam pipe 301. The water conveying assembly 26 transfers the circulating water in the lithium bromide unit 7 to the water storage tank 8. The high-temperature steam heats the circulating water in the water storage tank 8 and then sends it to the lithium bromide unit 7 through the water conveying assembly 26 to provide energy for the cooling of the lithium bromide unit 7. At the same time, a portion of the high-temperature steam is condensed and liquefied in the condenser tank 302 and falls back into the water storage tank 4. It is then sent to the converter body 1 through the water conveying assembly 5 for recycling. It should be noted that the circulating pump and other electrical components in this application are powered by an external power source. The converter body 1 and the lithium bromide unit 7 refer to the vinyl chloride converter and lithium bromide unit in the system utilizing the waste heat of vinyl chloride conversion in the lithium bromide unit with publication number CN204902311U.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A waste heat recovery device for a vinyl chloride converter, comprising a converter body (1), wherein a steam outlet (2) is fixedly connected to the converter body (1), characterized in that, Also includes: A steam treatment assembly (3) capable of closed-loop steam treatment is installed on the steam outlet (2), and a water storage tank (4) connected to the steam treatment assembly (3) is installed on one side of the converter body (1). Water delivery assembly 1 (5) is installed between the converter body (1) and the water storage tank 1 (4); Water storage tank 2 (8) is installed on one side of water storage tank 1 (4). A lithium bromide generator unit (7) is installed on one side of water storage tank 2 (8). A water conveying assembly 2 (6) is installed between water storage tank 2 (8) and lithium bromide generator unit (7).

2. The waste heat recovery device for a vinyl chloride converter according to claim 1, characterized in that: The steam treatment assembly (3) includes a steam pipe (301) fixedly connected to the steam outlet (2). A condenser (302) is fixedly connected to one end of the steam pipe (301) away from the steam outlet (2). The bottom of the condenser (302) is fixedly connected to the top of the water storage tank (4).

3. The waste heat recovery device for a vinyl chloride converter according to claim 1, characterized in that: The water supply component 1 (5) includes a water supply pipe 1 (501) fixedly connected to the converter body (1), and a circulation pump 1 (502) is installed on the water supply pipe 1 (501).

4. The waste heat recovery device for a vinyl chloride converter according to claim 1, characterized in that: The second water supply component (6) includes a second water supply pipe (601) fixedly connected between the second water storage tank (8) and the lithium bromide unit (7), and a second circulation pump (602) is installed on the second water supply pipe (601).

5. A graded waste heat recovery device for a vinyl chloride converter according to claim 2, characterized in that: A branch of the steam pipe (301) is fixedly connected to the top of the water storage tank (8).

6. The waste heat recovery device for a vinyl chloride converter according to claim 2, characterized in that: The steam transmission pipe (301) is a three-way pipe.

7. The waste heat recovery device for a vinyl chloride converter according to claim 1, characterized in that: The bottom of the converter body (1), water storage tank one (4) and water storage tank two (8) are all fixedly installed with mounting bases (9).

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