Independent closed chlorine gas compressor heat exchange circulating water system

Abstract

The utility model discloses an independent closed chlorine gas compressor heat exchange circulating water system, which relates to the technical field of chlorine gas compressors and comprises a chlorine gas compressor, and the output end of the chlorine gas compressor is fixedly connected with a primary cooler through a pipeline. According to the chlorine gas cooling device, the chlorine gas compressor, the first-stage cooler, the second-stage cooler, the third-stage cooler, the fourth-stage cooler and the chlorine gas distribution table are matched for use, and after entering the first-stage cooler, the chlorine gas enters the second-stage cooler; due to the fact that the compression of gas consumes mechanical energy and converts the mechanical energy into heat energy, the compression ratio of each section of the compressor cannot be too large, the volume of the gas is reduced so as to facilitate step-by-step proceeding of the compression process, chlorine is cooled after heat exchange is conducted through circulating cooling water, and then chlorine enters the second-stage compression, the third-stage compression and the fourth-stage compression and cooling in sequence. The chlorine is sent to the chlorine liquefaction storage and packaging for sale, so that the working efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of chlorine compressors, in particular to an independent closed chlorine compressor heat exchange circulating water system. Background Art

[0002] The chlorine compressor is the most critical core equipment of chlor-alkali enterprises. Its function is to pressurize the dried dry chlorine to 0.65MPa through a four-stage centrifugal compressor and then send it to the chlorine distribution station. According to production needs, the chlorine is sent to the liquefaction or chlorine product production process. The temperature of chlorine rises rapidly during the four-stage compression process. If the heat is not removed in time, it will inevitably affect the next stage of compression; if the temperature is ≥500℃, chlorine will react chemically with steel, thereby damaging the equipment. Therefore, an intermediate cooler must be configured between each stage of compression. In the cooler, chlorine goes through the shell side and circulating cooling water goes through the tube side.

[0003] The prior art, such as: CN204555496U, a composite enhanced cooling device for a circulating water system, ensures that the water temperature in the circulating water system meets the requirements when the cooling tower has poor cooling effect in the summer high temperature and high humidity season, and can be easily modified and upgraded in the original circulating water system and cooling tower structure. The cooling water plate exchanger and the chilled water plate exchanger are arranged in sequence according to the flow direction of water in the first pipeline. Pre-cooling can be performed by cooling water, and deep cooling can be performed by chilled water, which saves the electric energy consumed by the refrigerator and has no adverse effect on the original cooling tower cooling system. It can be promoted and used in systems with high requirements for water temperature control of the cooled medium.

[0004] However, the device still has certain shortcomings when in use. If there is a leak in the pipe, the chlorine will react with water to produce hydrochloric acid and hypochlorous acid, which will cause serious corrosion to carbon steel equipment. At the very least, it will damage key equipment such as the chlorine compressor. At worst, it may cause the water content in the liquid chlorine system to exceed the standard, seriously affecting the production of subsequent equipment and the entire circulating cooling water system, causing the chlorine compressor to shut down, which will directly lead to the complete shutdown of the chlor-alkali device. Utility Model Content

[0005] The utility model aims to provide an independent closed chlorine compressor heat exchange circulating water system to solve the problem of the existing CN204555496U composite enhanced cooling device for a circulating water system: if there is a leak in the pipe, chlorine and water will react to generate hydrochloric acid and hypochlorous acid, which will cause serious corrosion to carbon steel equipment, which will damage key equipment such as the chlorine compressor at the least, and may cause excessive water content in the liquid chlorine system at the worst, seriously affecting the production of subsequent devices and the entire circulating cooling water system, causing the chlorine compressor to stop, and directly leading to the comprehensive shutdown of the chlor-alkali device.

[0006] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0007] The utility model discloses an independent closed chlorine compressor heat exchange circulating water system, comprising a chlorine compressor, wherein the output end of the chlorine compressor is fixedly connected with a primary cooler through a pipeline, a secondary cooler, a tertiary cooler and a quaternary cooler are sequentially installed on the side of the primary cooler, an ORP online monitor is installed between the primary cooler and the secondary cooler, the side of the quaternary cooler is fixedly connected with a chlorine distribution platform through a connecting pipeline, and the side of the chlorine distribution platform is respectively fixedly connected with an absorption tower, a synthesis tower, a chlorine liquefied gas station and an exhaust gas discharge pipe through pipelines.

[0008] Furthermore, an independent circulating water pool is provided on the side of the chlorine compressor, a sealing cover is provided on the top of the independent circulating water pool, a circulating water cooler and a circulating water pump are respectively installed on the sides of the independent circulating water pool, and a refrigeration station is provided on the side of the circulating water cooler.

[0009] Furthermore, one circulating water cooler is provided, the outlet of the circulating water pump is connected to the circulating water cooler, and the corrosion inhibitor solution pipe and the pure tap water station are directly connected to the independent circulating water pool.

[0010] Furthermore, two circulating water pumps are provided, and outlets of the two circulating water pumps are connected to a circulating water cooler.

[0011] Furthermore, an oil cooler is provided on the side of the primary cooler, and the oil cooler is connected to the circulating water pump through a pipeline.

[0012] Furthermore, the volume of the independent circulating water pool is 6*9*4 meters, and a pH value online analysis and monitoring instrument is installed at the inlet of the independent circulating water pool.

[0013] Furthermore, the model of the chlorine compressor is STC-SH (8-4-VRZ), and the shell of the chlorine compressor adopts a single-axis multi-stage horizontal decomposition design.

[0014] Furthermore, concrete covers are respectively provided at the bottom of the two circulating water pumps and the one circulating water cooler, and the two circulating water pumps and the one circulating water cooler are fixedly connected to the concrete covers.

[0015] The utility model has the following beneficial effects:

[0016] 1. The utility model uses a chlorine compressor, a primary cooler, a secondary cooler, a tertiary cooler, a quaternary cooler and a chlorine distribution table in coordination. After entering the primary cooler, because the compression of the gas consumes mechanical energy and is converted into heat energy, the compression ratio of each section of the compressor cannot be too large. An intermediate cooler must be arranged between the stages to remove heat and reduce the gas volume to facilitate the step-by-step compression process. The chlorine is cooled after heat exchange with circulating cooling water, and then enters the secondary, tertiary and quaternary compression and cooling in sequence. The chlorine is then sent to the chlorine liquefaction storage and packaged for sale, thereby improving work efficiency.

[0017] 2. The utility model sets up an independent circulating water pool, a circulating water cooler and a circulating water pump for coordinated use, and introduces the circulating water return into the circulating water pool to form a separate closed-loop circulating water system, thereby avoiding the frequent use of heat exchangers in the chlor-alkali production system. At the same time, the circulating water of the chlorine compressor interstage cooler is separated from the circulating water system of the chlor-alkali device, thereby reducing the corrosion effect on the chlorine compressor cooler after the water quality is polluted by leakage of other heat exchangers, thereby improving practicality.

[0018] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 This is a schematic diagram of the circulating water structure of the interstage cooler of the independent closed chlorine compressor of the utility model;

[0021] Figure 2 This is a schematic diagram of the structure of a chlorine compressor system of the utility model;

[0022] Figure 3 It is a schematic diagram of the structure of the circulating water pool of the utility model.

[0023] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0024] 1. Chlorine compressor; 2. Primary cooler; 3. Secondary cooler; 4. Third-stage cooler; 5. Fourth-stage cooler; 6. Chlorine distribution table; 7. Absorption tower; 8. Synthesis tower; 9. Chlorine liquefied gas station; 10. Waste gas discharge pipe; 11. Oil cooler; 12. Corrosion inhibitor solution pipe; 13. Pure tap water station; 14. Sewage treatment station; 15. Refrigeration station; 16. Circulating water cooler; 17. Circulating water pump; 18. Independent circulating water pool. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-Figure 3 As shown, the utility model is an independent closed chlorine compressor heat exchange circulating water system, comprising a chlorine compressor 1, the output end of the chlorine compressor 1 is fixedly connected to a primary cooler 2 through a pipeline, a secondary cooler 3, a tertiary cooler 4 and a quaternary cooler 5 are sequentially installed on the side of the primary cooler 2, an ORP online monitor is installed between the primary cooler 2 and the secondary cooler 3, the side of the quaternary cooler 5 is fixedly connected to a chlorine distribution table 6 through a connecting pipe, the side of the chlorine distribution table 6 is respectively fixedly connected to an absorption tower 7, a synthesis tower 8, a chlorine liquefied gas station 9 and a waste gas discharge pipe 10 through pipelines, an independent circulating water pool 18 is opened on the side of the chlorine compressor 1, a sealing cover is arranged on the top of the independent circulating water pool 18, a circulating water cooler 16 and a circulating water pump 17 are respectively installed on the side of the independent circulating water pool 18, and a refrigeration station 15 is arranged on the side of the circulating water cooler 16.

[0027] A circulating water cooler 16 is provided, and the outlet of a circulating water pump 17 is connected to the circulating water cooler 16. The corrosion inhibitor solution pipe 12 and the pure tap water station 13 are directly connected to the independent circulating water pool 18. Two circulating water pumps 17 are provided, and the outlets of the two circulating water pumps 17 are connected to the circulating water cooler 16. An oil cooler 11 is provided on the side of the primary cooler 2, and the oil cooler 11 is connected to the circulating water pump 17 through a pipeline. The volume of the independent circulating water pool 18 is 6*9*4 meters. An online pH analysis monitor is installed at the inlet of the independent circulating water pool 18. The model of the chlorine compressor 1 is STC-SH (8-4-VRZ). The shell of the chlorine compressor 1 adopts a single-axis multi-stage horizontal decomposition design. Concrete covers are respectively provided at the bottom of the two circulating water pumps 17 and the one circulating water cooler 16, and the two circulating water pumps 17 and the one circulating water cooler 16 are fixedly connected to the concrete covers.

[0028] A specific application of this embodiment is as follows: when working, the chlorine compressor 1 is a centrifugal turbine compressor. When the rotor of the compressor rotates at a high speed under the drive of the motor to generate centrifugal force to work on the chlorine, a negative pressure is generated at the inlet of the impeller, thereby continuously sucking the gas into the machine. Under the action of the strong centrifugal force, the pressure of the gas is increased, and the kinetic energy is greatly increased. Subsequently, when the gas flows in the expanded flow channel, this part of the kinetic energy is converted into static pressure energy, so that the pressure of the gas is further increased, thereby achieving the purpose of increasing the gas pressure. The temperature and pressure of the chlorine gas after the first stage of compression increase and enter the first stage cooler 2. Because the compression of the gas consumes mechanical energy and converts it into heat energy, the compression ratio of each stage of the compressor cannot be too large. An intercooler must be set between the stages to remove heat and reduce the gas volume to facilitate the step-by-step progress of the compression process. The chlorine is cooled by circulating cooling water after heat exchange, and then enters the secondary, tertiary and quaternary compression and cooling in sequence. The chlorine is then sent to the chlorine liquefaction storage and packaged for sale. An independent circulating water pool 18 of 6*9*4 meters is built underground to form a closed storage pool. Two circulating water pumps 17 (one open and one standby), a shell and tube heat exchanger and pipelines are installed on the pool to supply water to the interstage cooler. At the same time, a circulating water return ditch is designed to introduce the circulating water return into the independent circulating water pool 18 to form a separate closed-loop circulating water system. This avoids the use of more heat exchangers in the chlor-alkali production system, can effectively avoid shutdown accidents caused by leakage of interstage coolers, ensure the long-term and stable operation of the ion membrane production device, conform to the equipment structure optimization and upgrading and development trend of chlor-alkali enterprises, and is conducive to the chlor-alkali enterprises to achieve the fundamental goal of long-term, stable and safe operation of production equipment.

[0029] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0030] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. An independent closed chlorine compressor heat exchange circulating water system, comprising a chlorine compressor (1), characterized in that: The output end of the chlorine compressor (1) is fixedly connected to a primary cooler (2) via a pipeline; a secondary cooler (3), a tertiary cooler (4) and a quaternary cooler (5) are sequentially installed on the side of the primary cooler (2); an ORP online monitor is installed between the primary cooler (2) and the secondary cooler (3); a side of the quaternary cooler (5) is fixedly connected to a chlorine distribution platform (6) via a connecting pipeline; and a side of the chlorine distribution platform (6) is respectively fixedly connected to an absorption tower (7), a synthesis tower (8), a chlorine liquefied gas station (9) and a waste gas discharge pipe (10) via pipelines.

2. An independent closed chlorine compressor heat exchange circulating water system according to claim 1, characterized in that: An independent circulating water pool (18) is provided on the side of the chlorine compressor (1), a sealing cover is provided on the top of the independent circulating water pool (18), a circulating water cooler (16) and a circulating water pump (17) are respectively installed on the side of the independent circulating water pool (18), and a refrigeration station (15) is provided on the side of the circulating water cooler (16).

3. An independent closed chlorine compressor heat exchange circulating water system according to claim 2, characterized in that: The circulating water cooler (16) is provided with one unit, the outlet of the circulating water pump (17) is connected to the circulating water cooler (16), and the corrosion inhibitor solution pipe (12) and the pure tap water station (13) are directly connected to the independent circulating water pool (18).

4. The independent closed chlorine compressor heat exchange circulating water system according to claim 2, characterized in that: Two circulating water pumps (17) are provided, and the outlets of the two circulating water pumps (17) are connected to the circulating water cooler (16).

5. An independent closed chlorine compressor heat exchange circulating water system according to claim 4, characterized in that: An oil cooler (11) is provided on the side of the primary cooler (2), and the oil cooler (11) is connected to a circulating water pump (17) via a pipeline.

6. An independent closed chlorine compressor heat exchange circulating water system according to claim 2, characterized in that: The volume of the independent circulating water pool (18) is 6*9*4 meters, and a pH value online analysis and monitoring instrument is installed at the inlet of the independent circulating water pool (18).

7. The independent closed chlorine compressor heat exchange circulating water system according to claim 1, characterized in that: The model of the chlorine compressor (1) is STC-SH (8-4-VRZ), and the shell of the chlorine compressor (1) adopts a single-shaft multi-stage horizontal decomposition design.

8. The independent closed chlorine compressor heat exchange circulating water system according to claim 2, characterized in that: Concrete covers are respectively provided at the bottoms of the two circulating water pumps (17) and the one circulating water cooler (16), and the two circulating water pumps (17) and the one circulating water cooler (16) are fixedly connected to the concrete covers.

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