Chlorination process whole-process automatic control software and method

Abstract

The invention relates to the technical field of chlorine chemical industry, in particular to chlorination process full-flow automatic control software and method.The chlorination process full-flow automatic control software comprises a chlorination kettle body, a sealing cover is clamped to the top of the chlorination kettle body, a stirrer is installed at the top of the sealing cover, and the stirring end of the stirrer penetrates through the sealing cover and extends into the chlorination kettle body; the stirring end of the stirrer is rotationally connected with the sealing cover, a pressure sensor and a temperature sensor are arranged at the top of the sealing cover, the detection ends of the temperature sensor and the pressure sensor penetrate through the sealing cover and extend into the chlorination kettle, and a first material outer circulation condenser and a second material outer circulation condenser are arranged at the top of the chlorination kettle; through the chlorination process full-process automatic control software and method, the full-process automatic control of the chlorination reaction is realized, and considerable economic benefits are brought to enterprises, such as economic and safety benefits in the aspects of solving the problem of high personnel density, reducing safety risks, reducing raw material production and manufacturing cost, reducing energy consumption and the like.

Description

Technical Field

[0001] The present invention relates to the technical field of chlorination technology, and in particular to software and method for automatic control of the entire process of a chlorination process. Background Art

[0002] In the production process of basic chemicals, due to the continuous adjustment of industrial policies and process synthesis routes, kettle stirred reaction is the most commonly used chemical material reaction tool in the actual production process. Taking into account the structure, performance and low cost of kettle reactors, most production enterprises in the industry use kettle stirred reactors. After a long period of summarizing and analyzing various gas-liquid chlorination chemical reaction mechanisms, I have considered how to effectively realize full-process automation control of the entire reaction process to meet the requirements of current industrial policies, reduce production and manufacturing costs, reduce the workload of on-site operators and reduce personal safety risks, ensure stable and reliable product quality, shorten the reaction cycle, and reduce the amount of infrastructure investment. These are the problems that all chlorine-related companies need to solve during the current downturn in the chemical industry.

[0003] The existing chlorination reactor has certain shortcomings. Aiming at the current kettle stirred reactor of chlorination chemical reaction, a set of functional algorithm control programs that meet the chlorination reaction mechanism of most fine chemical enterprises is designed. Due to different reaction mechanisms and conditions, different chlorination reactions require different algorithm libraries and field equipment for data collection. This design only designs the gas-liquid phase exothermic reaction mechanism of several chlorination processes. At the same time, in order to ensure process safety, this design adopts external circulation cooling treatment measures for the chlorination reaction products, modules and data acquisition equipment. The implementation and operation of this design scheme are carried out in a very safe on-site environment to ensure that no accidents will occur during the entire process. Summary of the invention

[0004] The purpose of the present invention is to provide a chlorination process full-process automation control software and method, so as to solve the above-mentioned background technology proposed for the kettle stirred reactor of the current chlorination chemical reaction, and design a set of functional algorithm control programs that meet the chlorination reaction mechanism of most fine chemical enterprises. Due to different reaction mechanisms and conditions, different chlorination reactions require different algorithm libraries and field equipment for data collection. This design is only designed for the gas-liquid phase exothermic reaction mechanism of several chlorination processes. At the same time, in order to ensure process safety, this design adopts external circulation cooling treatment measures for the chlorination reaction products, modules and data acquisition equipment. The implementation and operation of this design scheme are carried out in a very safe on-site environment to ensure that no accidents will occur during the whole process.

[0005] To achieve the above object, the present invention provides the following technical solutions: A chlorination process full-process automatic control software and method, comprising a chlorination kettle body, a sealing cover is clamped on the top of the chlorination kettle body, a stirrer is installed on the top of the sealing cover, a stirring end of the stirrer penetrates the sealing cover and extends into the chlorination kettle body, the stirring end of the stirrer is rotatably connected to the sealing cover, a pressure sensor and a temperature sensor are respectively arranged on the top of the sealing cover, the detection ends of the temperature sensor and the pressure sensor both penetrate the sealing cover and extend into the chlorination kettle, a first material external circulation condenser and a second material external circulation condenser are respectively arranged on the top of the chlorination kettle, and the first material external circulation condenser and the second material external circulation condenser are both communicated with the chlorination kettle body through a pipeline.

[0006] As a preferred solution of the present invention, the top of the chlorination kettle body is respectively provided with material A and material B, the top of the material A is provided with a first closing valve, the top of the material B is provided with a second closing valve, the bottom of the material A is provided with an A material discharge valve, the bottom of the material B is provided with a B material discharge valve, and the bottoms of the A material discharge valve and the B material discharge valve are respectively provided with A material flow accumulation and B material flow accumulation.

[0007] As a preferred solution of the present invention, a buffer tank is arranged on the top of the chlorination kettle body, a chlorine-passing and venting buffer tank is arranged on the top of the buffer tank, a chlorine-passing tank is arranged at the bottom of the buffer tank through a pipeline, a chlorine-passing gasifier is arranged on the side of the chlorine-passing tank, and a liquid chlorine feeding pump is arranged on the side of the chlorine-passing gasifier.

[0008] As a preferred solution of the present invention, a liquid chlorine regulating valve and a liquid chlorine shut-off valve are provided between the liquid chlorine feeding pump and the chlorine gasifier, and a radar level meter is provided on the side of the liquid chlorine feeding pump.

[0009] As a preferred solution of the present invention, the chlorine-passing tank and the chlorination kettle body are connected through a conduit, and a steam-chlorine flowmeter and a steam-chlorine regulating valve are respectively provided on the outer surface of the conduit, and the steam-chlorine regulating valve is located on the top of the steam-chlorine flowmeter.

[0010] As a preferred solution of the present invention, a first bottom valve is arranged at the bottom of the chlorination kettle body, a material circulation pump is arranged on the side of the first bottom valve through a conduit, and a second bottom valve and a discharge valve are arranged on the side of the material circulation pump.

[0011] As a preferred solution of the present invention, the second kettle bottom valve is located at the bottom of the second material external circulation condenser, and the second kettle bottom valve is located on the outer surface of the pipeline.

[0012] As a preferred solution of the present invention, a material A metering trough and a material B metering trough are respectively provided on the tops of the material A and the material B, and a volatile gas recovery tower is provided on the sides of the material A metering trough and the material B metering trough through a pipeline.

[0013] As a preferred solution of the present invention, the first material external circulation condenser and the second material external circulation condenser are of the same size, and control switches are respectively provided on the outer surfaces of the first material external circulation condenser and the second material external circulation condenser.

[0014] As a preferred solution of the present invention, a method for automating the entire process of a chlorination process is provided, the method being as follows: Step 1: first check the instrument air pressure and dew point; the chilled water pressure, temperature and pH; whether the liquid level of the liquid chlorine storage tank meets the requirements of the chlorination reaction and whether it meets the conditions for multiple batches of production; Step 2: After the production conditions are determined, the liquid chlorine feed pump is in a non-faulty state, the vaporizer steam pressure, temperature or hot water temperature meets the liquid chlorine vaporization conditions; whether the liquid chlorine shut-off valve and liquid chlorine regulating valve are normal; whether the steam-chlorine flowmeter is normal; whether the chlorination kettle body is flowing normally; the chlorination kettle body agitator has no faults; the bottom material high-level tank liquid level and discharge valve, steam-chlorine flowmeter are normal; the refrigeration system switch regulating valve and cold water valve are normal; the bottom material inventory fully meets the full process automatic control conditions; the chlorination kettle body temperature and pressure measurement values ​​fully meet the process requirements; the first kettle bottom valve, the second kettle bottom valve and the discharge valve are normal; the material circulation pump has no faults; the heat exchange effect of the external circulation condensation system fully meets the process requirements; the tail gas recovery system pressure, valves and process pipelines are normal; Step 3: After the basic control is completed, the liquid level of the liquid chlorine storage tank is interlocked with the liquid chlorine feeding pump, switch, regulating valve and the temperature and pressure of the chlorine gasifier; the pressure and temperature of the chlorine gasifier are interlocked with the steam chlorine regulating valve, liquid chlorine cut-off valve and steam chlorine flowmeter of the chlorination kettle body, and at the same time, they are interlocked with the temperature and pressure of the chlorination kettle body, the first material external circulation condenser and the second material external circulation condenser; the material metering tank of material A and material B is interlocked with the discharge valve, liquid level, material A, material B and material circulation pump; at the same time, the flow accumulation of material A and material B, the material circulation pump, and the chilled water system are interlocked; Step 4: The entire chlorination reaction process is a continuous production process, from the first batch of materials to the output of finished products and the next batch of materials to continue production. As long as the front and back sections meet the conditions for continued chlorination, the entire chlorination process can be completely unmanned.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, the software and method for automatic control of the whole process of chlorination process are designed in the spirit of reusing old and adding key equipment, optimizing process algorithms, and utilizing some basic equipment and facilities on site to judge the reaction process, when the reaction process ends, when the reaction products meet the conditions for release, and reasonably adjust and distribute the reaction "temperature" and "degree", so as to realize the automatic control of the whole process of chlorination reaction, and also bring considerable economic benefits to the enterprise, such as solving the economic and safety benefits of high personnel density, reducing safety risks, reducing raw material production and manufacturing costs, and reducing energy consumption.

[0016] 2. In the present invention, the full-process automated control software and method of the chlorination process can reduce the manufacturing cost of the enterprise, while improving the enterprise's inherent safety production goals, shortening the chlorination reaction time, increasing the material conversion yield, and reducing the overall energy consumption of production, so that the enterprise can fully realize digital management and operation in such production reaction processes. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall full-process automation structure of the present invention; Figure 2 It is a schematic diagram of the main structure of the chlorination kettle of the present invention; Figure 3 It is a schematic diagram of the material control structure of the present invention; Figure 4 It is a schematic diagram of the material adding structure of the present invention.

[0018] In the figure: 1, chlorination kettle body; 2, sealing cover; 3, agitator; 4, pressure sensor; 5, temperature sensor; 6, first material external circulation condenser; 7, second material external circulation condenser; 8, material A; 9, material B; 10, buffer tank; 11, first kettle bottom valve; 12, material circulation pump; 13, cold water valve; 14, chlorine tank; 15, chlorine gasifier; 16, radar level gauge; 17, liquid chlorine feeding pump; 18, second kettle bottom valve; 19, steam chlorine flowmeter; 20, steam chlorine regulating valve; 21, discharge valve; 22, liquid chlorine regulating valve; 23, liquid chlorine shut-off valve; 24, first closing valve; 25, second closing valve. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0020] For examples, see Figure 1-Figure 4 , the present invention provides a technical solution: A chlorination process full-process automatic control software and method, comprising a chlorination kettle body 1, a sealing cover 2 is clamped on the top of the chlorination kettle body 1, a stirrer 3 is installed on the top of the sealing cover 2, a stirring end of the stirrer 3 penetrates the sealing cover 2 and extends into the chlorination kettle body 1, the stirring end of the stirrer 3 is rotatably connected with the sealing cover 2, a pressure sensor 4 and a temperature sensor 5 are respectively arranged on the top of the sealing cover 2, the detection ends of the temperature sensor 5 and the pressure sensor 4 both penetrate the sealing cover 2 and extend into the chlorination kettle 1, a first material external circulation condenser 6 and a second material external circulation condenser 7 are respectively arranged on the top of the chlorination kettle 1, the first material external circulation condenser 6 and the second material external circulation condenser 7 are both communicated with the chlorination kettle body 1 through a pipeline, and A material 8 and B material 9 are respectively arranged on the top of the chlorination kettle body 1 A first shut-off valve 24 is arranged on the top of the material A 8, a second shut-off valve 25 is arranged on the top of the material B 9, an A material discharge valve is arranged on the bottom of the material A 8, a B material discharge valve is arranged on the bottom of the material B 9, and the bottoms of the A material discharge valve and the B material discharge valve are respectively provided with the A material flow accumulation and the B material flow accumulation, a buffer tank 10 is arranged on the top of the chlorination kettle body 1, a chlorine-passing and venting buffer tank is arranged on the top of the buffer tank 10, a chlorine-passing tank 14 is arranged on the bottom of the buffer tank 10 through a pipeline, a chlorine-passing gasifier 15 is arranged on the side of the chlorine-passing tank 14, a liquid chlorine feeding pump 17 is arranged on the side of the chlorine-passing gasifier 15, a liquid chlorine regulating valve 22 and a liquid chlorine cut-off valve 23 are arranged between the liquid chlorine feeding pump 17 and the chlorine-passing gasifier 15, and a radar level meter 16 is arranged on the side of the liquid chlorine feeding pump 17.

[0021] The chlorine-passing tank 14 and the chlorination kettle body 1 are communicated with each other through a conduit, and a steam-chlorine flowmeter 19 and a steam-chlorine regulating valve 20 are respectively arranged on the outer surface of the conduit, and the steam-chlorine regulating valve 20 is located at the top of the steam-chlorine flowmeter 19. A first bottom valve 11 is arranged at the bottom of the chlorination kettle body 1, and a material circulation pump 12 is arranged on the side of the first bottom valve 11 through a conduit, and a second bottom valve 18 and a discharge valve 21 are respectively arranged on the side of the material circulation pump 12, and the second bottom valve 18 is located at the bottom of the second material external circulation condenser 7, and the second bottom valve 18 is located on the outer surface of the pipeline, and a material A metering groove and a material B metering groove are respectively arranged on the top of the A material 8 and the B material 9, and a volatile gas recovery tower is arranged on the side of the A material metering groove and the B material metering groove through a pipeline, and the first material external circulation condenser 6 and the second material external circulation condenser 7 are of the same size, and the outer surfaces of the first material external circulation condenser 6 and the second material external circulation condenser 7 are respectively provided with control switches.

[0022] Among them, the realization of full-process automated control of the chlorination reaction also brings considerable economic benefits to the enterprise, such as solving the economic and safety benefits of high labor density, reducing safety risks, reducing raw material production and manufacturing costs, and reducing energy consumption.

[0023] The working process of the present invention: when the chlorination process full-process automation control software and method designed by the present invention are used, first check whether each equipment link is used normally, first check the instrument air pressure and dew point; the chilled water pressure, temperature and pH; whether the liquid level of the liquid chlorine storage tank meets the needs of the chlorination reaction, whether it meets the conditions for multiple batches of production, after the production conditions are determined, the liquid chlorine feed pump 17 is in a non-fault state, the vaporizer steam pressure, temperature or hot water temperature meets the liquid chlorine vaporization conditions; whether the liquid chlorine cut-off valve 23 and the liquid chlorine regulating valve 22 are normal; the steam chlorine flowmeter 1 9 is normal; is the chlorination kettle body 1 chlorine flow normal; the chlorination kettle body 1 agitator 3 is fault-free; the bottom material high-level tank liquid level and discharge valve 21, steam chlorine flowmeter 19 are normal; the refrigeration system switch regulating valve and cold water valve 13 are normal; the bottom material inventory fully meets the full process automatic control conditions; the chlorination kettle body temperature, pressure measurement value accuracy and stability fully meet the process requirements; the first kettle bottom valve 11, the second kettle bottom valve 18 and the discharge valve 21 are normal; the material circulation pump 12 is fault-free; the heat exchange effect of the external circulation condensation system fully meets the process requirements. degree and stability; the pressure, valves and process pipelines of the tail gas recovery system are normal. After the basic control is completed, the liquid level of the liquid chlorine storage tank is interlocked with the liquid chlorine feeding pump 17, the switch, the regulating valve and the temperature and pressure of the chlorine gasifier 15; the pressure and temperature of the chlorine gasifier 15 are interlocked with the steam chlorine regulating valve 20, the liquid chlorine cut-off valve 23 and the steam chlorine flowmeter 19 of the chlorination kettle body 1, and are also interlocked with the temperature and pressure of the chlorination kettle body 1, the first material external circulation condenser 6 and the second material external circulation condenser 7; the material metering tank of material A 8 and material B 9 is interlocked with the discharge valve 21, the liquid level and the material A 8 and material B 9 with the material circulation pump 12; at the same time, the flow accumulation of material A 8 and material B 9, the material circulation pump 12, and the chilled water system are interlocked. The entire chlorination reaction process is a continuous production process. From the first batch of materials to the output of finished products and the next batch of materials to continue to be put into production, as long as the raw material supply and status detection points of the front and rear sections meet the process production requirements and there are no unexpected situations in the material receiving link to meet the conditions for the continued chlorination, the entire chlorination process can be completely unmanned.

[0024] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A chlorination process full process automation control software, including a chlorination kettle body (1), characterized in that: A sealing cover (2) is clamped on the top of the chlorination kettle body (1), and a stirrer (3) is installed on the top of the sealing cover (2). The stirring end of the stirrer (3) passes through the sealing cover (2) and extends into the chlorination kettle body (1). The stirring end of the stirrer (3) is rotatably connected to the sealing cover (2). A pressure sensor (4) and a temperature sensor (5) are respectively arranged on the top of the sealing cover (2). The detection ends of the temperature sensor (5) and the pressure sensor (4) both pass through the sealing cover (2) and extend into the chlorination kettle (1). A first material external circulation condenser (6) and a second material external circulation condenser (7) are respectively arranged on the top of the chlorination kettle (1). The first material external circulation condenser (6) and the second material external circulation condenser (7) are both connected to the chlorination kettle body (1) through a pipeline.

2. A chlorination process full-process automation control software according to claim 1, characterized in that: The top of the chlorination kettle body (1) is provided with material A (8) and material B (9), respectively; the top of the material A (8) is provided with a first closing valve (24), the top of the material B (9) is provided with a second closing valve (25), the bottom of the material A (8) is provided with an A material discharge valve, the bottom of the material B (9) is provided with a B material discharge valve, and the bottom of the material A discharge valve and the material B discharge valve are provided with A material flow accumulation and B material flow accumulation, respectively.

3. A chlorination process full-process automation control software according to claim 1, characterized in that: A buffer tank (10) is arranged on the top of the chlorination kettle body (1), a chlorine-passing and venting buffer tank is arranged on the top of the buffer tank (10), a chlorine-passing tank (14) is arranged on the bottom of the buffer tank (10) via a pipeline, a chlorine-passing gasifier (15) is arranged on the side of the chlorine-passing tank (14), and a liquid chlorine feeding pump (17) is arranged on the side of the chlorine-passing gasifier (15).

4. A chlorination process full-process automation control software according to claim 3, characterized in that: A liquid chlorine regulating valve (22) and a liquid chlorine shut-off valve (23) are provided between the liquid chlorine feeding pump (17) and the chlorine gasifier (15), and a radar level meter (16) is provided on the side of the liquid chlorine feeding pump (17).

5. A chlorination process full-process automation control software according to claim 3, characterized in that: The chlorine-passing tank (14) and the chlorination kettle body (1) are connected via a conduit, and a steam-chlorine flowmeter (19) and a steam-chlorine regulating valve (20) are respectively provided on the outer surface of the conduit, and the steam-chlorine regulating valve (20) is located on the top of the steam-chlorine flowmeter (19).

6. A chlorination process full-process automation control software according to claim 1, characterized in that: A first bottom valve (11) is arranged at the bottom of the chlorination kettle body (1), a material circulation pump (12) is arranged on the side of the first bottom valve (11) via a conduit, and a second bottom valve (18) and a discharge valve (21) are respectively arranged on the side of the material circulation pump (12).

7. A chlorination process full-process automation control software according to claim 6, characterized in that: The second bottom valve (18) is located at the bottom of the second material external circulation condenser (7), and the second bottom valve (18) is located on the outer surface of the pipeline.

8. A chlorination process full-process automation control software according to claim 2, characterized in that: A material A metering trough and a material B metering trough are respectively arranged on the top of the material A (8) and the material B (9), and a volatile gas recovery tower is arranged on the side of the material A metering trough and the material B metering trough through a pipeline.

9. A chlorination process full-process automation control software according to claim 1, characterized in that: The first material external circulation condenser (6) and the second material external circulation condenser (7) are of the same size, and control switches are respectively provided on the outer surfaces of the first material external circulation condenser (6) and the second material external circulation condenser (7).

10. A chlorination process full process automation method is applicable to a chlorination process full process automation control software described in claims 1-9 above, and the method is as follows: Step 1: First check the instrument air pressure and dew point; chilled water pressure, temperature and pH; whether the liquid level of the liquid chlorine storage tank meets the needs of chlorination reaction and whether it meets the conditions for multiple batches of production; Step 2: After the production conditions are determined, the liquid chlorine feed pump (17) is in a non-faulty state, the vaporizer steam pressure, temperature or hot water temperature meets the liquid chlorine vaporization conditions; whether the liquid chlorine shut-off valve (23) and the liquid chlorine regulating valve (22) are normal; whether the steam-chlorine flowmeter (19) is normal; whether the chlorination kettle body (1) is flowing normally; the agitator (3) of the chlorination kettle body (1) is fault-free; the liquid level of the bottom material high-level tank and the discharge valve (21) and the steam-chlorine flowmeter (19) are normal; the refrigeration system switch regulating valve and cold water valve (13) are normal; the bottom material inventory fully meets the full process automatic control conditions; the temperature and pressure measurement values ​​(accuracy and stability) of the chlorination kettle body fully meet the process requirements; the first kettle bottom valve (11), the second kettle bottom valve (18) and the discharge valve (21) are normal; the material circulation pump (12) is fault-free; the heat exchange effect of the external circulation condensation system fully meets the process requirements (accuracy and stability of the instrument); the tail gas recovery system pressure, valves and process pipelines are normal; Step 3: After the basic control is completed, the liquid level of the liquid chlorine storage tank is interlocked with the liquid chlorine feed pump (17), the switch, the regulating valve, and the temperature and pressure of the chlorine gasifier (15); the pressure and temperature of the chlorine gasifier (15) are interlocked with the steam chlorine regulating valve (20), the liquid chlorine shut-off valve (23), and the steam chlorine flowmeter (19) of the chlorination kettle body (1), and are also interlocked with the temperature and pressure of the chlorination kettle body (1), the first material external circulation condenser (6), and the second material external circulation condenser (7); the material metering tank of material A (8) and material B (9) is interlocked with the discharge valve (21), the liquid level, and the material A (8) and material B (9) and the material circulation pump (12); at the same time, the flow accumulation of material A (8) and material B (9), the material circulation pump (12), and the chilled water system are interlocked; Step 4: The entire chlorination reaction process is a continuous production process, starting from the first batch of materials to the output of finished products and the next batch of materials to continue production. As long as the front and back sections (raw material supply and status detection points meet the process production requirements and there are no unexpected situations in the material receiving link) meet the conditions for the continuation of chlorination, the entire chlorination process can be completely unmanned.

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