Automatic control system for chemical production

Abstract

The utility model relates to the technical field of chemical production, in particular to an automatic control system for chemical production, which comprises a pressure relief pipe, a pressure relief control valve, a pressure sensor and a controller, the pressure relief pipe is mounted on a pressure relief opening of a reaction furnace, and the pressure relief control valve is mounted on the pressure relief pipe. An outlet of the pressure relief control valve is connected with a dust-containing gas discharge pipe, an outlet of the dust-containing gas discharge pipe is connected with an unpowered acceleration assembly, the unpowered acceleration assembly is connected with a dust-containing gas-liquid mixing assembly, and an outlet of the unpowered acceleration assembly is connected with a purification assembly; the automatic control system for chemical production realizes effective control and management of dust-containing high-pressure gas in the reaction furnace, accelerates gas flow by using a fluid dynamics principle, prevents dust from depositing in a pipeline, and performs purification treatment, so that the dust-containing high-pressure gas in the reaction furnace is effectively controlled and managed, and the dust-containing high-pressure gas in the reaction furnace is effectively controlled and managed. And the stability of the pressure in the reaction furnace is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of chemical production, specifically is a kind of automatic control system for chemical production. BACKGROUND

[0002] Chemical production includes raw material preparation, reaction process, separation and purification, energy supply, control and automation and waste disposal links.Chemical production control system is a kind of highly integrated technical application, aims at realizing the optimization control and management to entire production process by automatic detection, analysis and adjustment key parameters in production process.

[0003] In the reaction process of chemical production, after the material in reaction furnace fully reacts, the gas generated is absorbed and purified by negative pressure absorption fan and gas guide pipe into subsequent system.Due to the rotary reaction of reaction furnace, dust is generated in production, when dust accumulates too much, it will cause the area of gas guide pipe to reduce, form positive pressure in reaction furnace, and a large amount of dust is positively accumulated to gas guide pipe, and the inner wall of gas guide pipe becomes smaller.And the reaction in furnace is continuously, causing the gas in reaction furnace to continuously positively, when pressure continuously becomes larger, there will be spouting phenomenon, which will pose a threat to on-site operator, and dust will cause damage to ecological environment. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of automatic control system for chemical production to solve the problems raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical scheme: an automatic control system for chemical production, including installation is located on the relief pipe of reaction furnace, relief control valve, pressure sensor and controller, the relief control valve is installed on the relief pipe, the relief control valve outlet is connected with dust-containing gas exhaust pipe, the dust-containing gas exhaust pipe outlet is connected with powerless acceleration assembly, the dust-containing gas gas-liquid mixing assembly is connected on the powerless acceleration assembly, the powerless acceleration assembly outlet is connected with purification assembly, the pressure sensor is installed on the reaction furnace for detecting the pressure inside reaction furnace, the pressure sensor is electrically connected with the controller by wire.

[0006] As the preferred scheme of the utility model, the controller includes data acquisition module, data processing module and execution module, the data acquisition module is responsible for collecting the pressure, temperature key parameters in the reaction furnace in real time, the data processing module is used for analyzing and processing the data collected in the reaction furnace, and whether the starting emergency pressure relief measure of the reaction furnace needs to be adjusted is judged, the execution module is used for controlling the operation of the pressure relief control valve according to the instruction of the data processing module, and it ensures the coordination and efficiency of the whole system, can respond quickly in emergency, and protects equipment and personnel safety.

[0007] As the preferred scheme of the utility model, the unpowered acceleration assembly includes a venturi tube, a turbine bucket and a dust deposition prevention self-rotating blade, the venturi tube inlet is connected with the dust-containing gas discharge pipe outlet, and the venturi tube outlet is connected with the purification assembly.

[0008] The turbine bucket is located inside the venturi tube and close to the throat pipe side, gas inlets are formed through the outer circumferential wall of the turbine bucket, the dust deposition prevention self-rotating blade is located inside the turbine bucket, and the bottom of the dust deposition prevention self-rotating blade is connected with the inner bottom of the turbine bucket through a shaft rod.

[0009] As the preferred scheme of the utility model, the gas-liquid mixing assembly includes a mixing water inlet pipe connected with the throat pipe of the venturi tube, the mixing water inlet pipe includes a water inlet ring and a water inlet conduit arranged in a ring shape and connected to the water inlet ring, eight water inlet conduits are arranged, and the water outlet of each water inlet conduit is connected with the throat pipe of the venturi tube in a ring shape.

[0010] As the preferred scheme of the utility model, the purification assembly includes a cyclone separator, the inlet on the upper side of the cyclone separator is connected with the outlet of the venturi tube, a purification gas outlet conduit is connected and arranged through the top of the cyclone separator, and a dust hopper is connected and arranged at the bottom of the cyclone separator.

[0011] As the preferred scheme of the utility model, the pressure relief control valve is electrically connected with the controller through wires.

[0012] Compared with the prior art, the utility model has the beneficial effects that:

[0013] In view of the problems in the background art, the automatic control system for chemical production of the application integrates the unpowered acceleration assembly, the gas-liquid mixing assembly and the purification assembly, realizes effective treatment and control of dust-containing gas during pressure relief when the pressure in the reaction furnace is large, improves production efficiency and product quality, significantly reduces energy consumption and environmental impact, and provides strong support for sustainable development of the chemical industry.

[0014] The automatic control system for chemical production realizes effective control and management of dust-containing gas in the reaction furnace by integrating the non-powered acceleration assembly, the gas-liquid mixing assembly and the purification assembly, the non-powered acceleration assembly accelerates the airflow by using the principle of fluid dynamics to prevent dust from depositing in the pipeline, the gas-liquid mixing assembly fully mixes the water mist with the dust-containing gas to form a gas-liquid mixture, and the purification assembly separates the dust from the gas by the centrifugal force to realize purification treatment, the whole system ensures the stability of the pressure in the reaction furnace, avoids the explosion risk caused by the excessively high pressure, and reduces the threat of dust to the environment and the operating personnel through effective gas-liquid mixing and purification treatment;

[0015] When the reaction furnace rotates, too much dust is generated, the dust accumulates, the area of the gas guide pipe is reduced, the positive pressure is formed in the reaction furnace, the dust positive pressure accumulates to the gas guide pipe, the inner wall of the gas guide pipe becomes smaller, the reaction in the furnace continues, the gas in the reaction furnace continues to be under positive pressure, and the pressure continues to increase, which may cause the gas to be sprayed out, the directly sprayed gas may threaten the operating personnel on site and cause damage to the ecological environment, the pressure sensor detects when the internal pressure of the reaction furnace exceeds the threshold value, and the controller starts the pressure relief control valve on the pressure relief pipe to release pressure, the dust-containing gas enters the turbine bucket through the gas inlet on the front side of the venturi pipe, the gas inlet limits the airflow, the airflow entering the turbine bucket increases significantly in speed, the gas inlet guides the airflow to the inside of the anti-dust deposition self-rotating blade, the high-speed airflow in the turbine bucket exerts force on the anti-dust deposition self-rotating blade to make it rotate quickly, agitate the airflow, prevent dust deposition, and cannot be mixed with the water sprayed from the water inlet pipe, which affects the purification effect, the accelerated dust-containing airflow is mixed with the water sprayed from the water inlet pipe which is uniformly distributed in a ring structure, the water enters the throat pipe at a high speed from the water inlet pipe which is uniformly distributed in a ring structure and collides with the high-speed gas to form mist droplets, the dust collides with the mist droplets to form large particles which are dropped, and the dropped dust is separated and purified by the cyclone separator and then discharged into the absorption and purification equipment for subsequent treatment.

[0016] The utility model will be explained in detail below in combination with the specific embodiments and the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a schematic diagram of the reaction furnace of the utility model.

[0018] Figure 2 It is a schematic diagram of the structure of the venturi pipe and the mixed water inlet pipe of the utility model.

[0019] Figure 3 It is a schematic diagram of the turbine bucket and the anti-dust deposition self-rotating blade of the utility model.

[0020] Figure 4The utility model discloses a water inlet ring side view.

[0021] Figure 5 The utility model discloses a control equipment connection block diagram.

[0022] In the drawing: 1, pressure relief pipe; 2, pressure relief control valve; 21, dust-containing gas discharge pipe; 3, venturi tube; 31, turbine hopper; 311, gas inlet; 32, anti-dust deposition self-rotating blade; 4, mixed water inlet pipe; 401, water inlet ring; 402, water inlet conduit; 5, cyclone separator. DETAILED DESCRIPTION

[0023] In order to facilitate understanding the utility model, below will be more comprehensive description of the utility model with reference to relevant drawings, the drawings show several embodiments of the utility model, but the utility model can be realized through different forms, and is not limited to the embodiments described in the text, on the contrary, provide these embodiments are to make the disclosed content of the utility model more thorough and comprehensive. EMBODIMENT

[0024] The various devices in the present application file all adopt conventional models in the prior art, and the control mode is controlled through a controller. The control circuit of the controller can be realized through simple programming by those skilled in the art, and belongs to the common knowledge in the art. Therefore, the present application will not be explained in detail.

[0025] Please refer to Figures 1-5 The utility model provides a kind of automatic control system for chemical production, including installation located on the pressure relief pipe (1) of reaction furnace pressure release port, pressure relief control valve (2), pressure sensor and controller, pressure relief control valve (2) is installed on pressure relief pipe (1), pressure relief control valve (2) outlet is connected with dust-containing gas discharge pipe (21) is set, dust-containing gas discharge pipe (21) outlet is connected with unpowered acceleration component and is set, unpowered acceleration component is connected with dust-containing gas gas-liquid mixing component and is set, unpowered acceleration component outlet is connected with purification component and is set, pressure sensor is installed on reaction furnace for detecting the pressure inside reaction furnace, pressure sensor is electrically connected with controller by wire, pressure relief control valve (2) is electrically connected with controller by wire;Controller includes data acquisition module, data processing module and execution module, and data acquisition module is responsible for real-time collection of pressure, temperature key parameters in reaction furnace;Data processing module is used to analyze and process the data collected in the reaction furnace, to judge whether the start emergency pressure relief measure of reaction furnace needs to be adjusted;Execution module is used to control the operation of pressure relief control valve (2) according to the instruction of data processing module, which ensures the coordination and efficiency of the whole system, can respond quickly in emergency, and protects equipment and personnel safety.

[0026] It should be noted that in the present embodiment, the pressure sensor monitors the pressure condition inside the reaction furnace in real time and transmits the data to the controller. The data acquisition module of the controller is responsible for collecting these key parameters, including pressure and temperature, etc. The pressure sensor adopts model 3051 series, which is suitable for pressure monitoring and control in various industrial fields and can meet the needs of different working conditions.

[0027] The data processing module of the controller analyzes the collected data to determine whether the internal pressure of the reaction furnace exceeds the preset safety threshold. If the pressure is too high, it indicates that there is a risk of dust accumulation, and emergency pressure relief measures need to be taken. Once the data processing module determines that the pressure relief measures need to be started, the execution module will issue an instruction to control the pressure relief control valve 2 on the pressure relief pipe to open. In this way, the dust-containing gas in the reaction furnace will be discharged through the pressure relief control valve 2. The discharged dust-containing gas first enters the unpowered acceleration assembly, the Venturi tube 3, which uses the principle of fluid dynamics to accelerate the airflow to prevent dust from depositing in the pipeline. Subsequently, the dust-containing gas enters the gas-liquid mixing assembly and is fully mixed with the sprayed water mist to form a gas-liquid mixture. The gas-liquid mixture then enters the purification assembly, the cyclone separator, which separates the dust from the gas through centrifugal force. The purified gas is discharged through the top purification gas outlet conduit, while the separated dust falls into the hopper at the bottom. Throughout the process, the control system ensures the stability of the internal pressure of the reaction furnace, avoiding the risk of explosion caused by excessive pressure. At the same time, through effective gas-liquid mixing and purification treatment, the threat of dust to the environment and operating personnel is reduced.

[0028] Please refer to Figure 2 , 3And 4, the unpowered acceleration assembly includes a Venturi tube (3), a turbine bucket (31) and a dust deposition prevention self-rotating blade (32), the inlet of the Venturi tube (3) is connected with the outlet of the dust-containing gas discharge pipe (21), and the outlet of the Venturi tube (3) is connected with the purification assembly; the turbine bucket (31) is located inside the Venturi tube (3) and close to one side of the throat pipe, a gas inlet (311) is formed through the outer circumferential wall of the turbine bucket (31), the dust deposition prevention self-rotating blade (32) is located inside the turbine bucket (31), and the bottom of the dust deposition prevention self-rotating blade (32) is connected with the inner bottom of the turbine bucket (31) in a rotating mode through a shaft rod; the gas-liquid mixing assembly includes a mixing water inlet pipe (4) connected with the throat pipe of the Venturi tube (3), the mixing water inlet pipe (4) includes a water inlet ring (401) and water inlet conduits (402) distributed in a ring shape and connected to the water inlet ring (401), eight water inlet conduits (402) are arranged, and the water outlet of each water inlet conduit (402) is connected with the throat pipe of the Venturi tube (3) in a ring shape and through connection; the purification assembly includes a cyclone separator (5), one side of the top of the cyclone separator (5) is connected with the outlet of the Venturi tube (3), a purified gas outlet conduit is arranged through the top of the cyclone separator (5), and a dust hopper is arranged at the bottom of the cyclone separator (5).

[0029] It should be noted that, in the embodiment, the unpowered acceleration assembly includes the Venturi tube 3, the turbine bucket 31 and the dust deposition prevention self-rotating blade 32, the inlet of the Venturi tube 3 is connected with the outlet of the dust-containing gas discharge pipe 21, the outlet is connected with the purification assembly, the turbine bucket 31 is located inside the Venturi tube and close to one side of the throat pipe, a gas inlet 311 is formed through the outer circumferential wall of the turbine bucket 31, the dust deposition prevention self-rotating blade 32 is located inside the turbine bucket 31, and the bottom of the dust deposition prevention self-rotating blade 32 is connected with the inner bottom of the turbine bucket 31 in a rotating mode through a shaft rod; when the dust-containing gas enters the turbine bucket 31 through the gas inlet 311 on the front side of the Venturi tube 3, the gas inlet 311 limits the airflow, at this time, the airflow moving speed in the turbine bucket 31 is significantly increased, the gas inlet 311 guides the airflow to the dust deposition prevention self-rotating blade 32 inside in a tangential direction, the high-speed airflow in the turbine bucket 31 exerts force on the dust deposition prevention self-rotating blade 32, so that the dust deposition prevention self-rotating blade 32 rotates rapidly, the airflow is stirred, dust deposition is prevented, and the unpowered rotating acceleration mode saves power resources;

[0030] Further, the gas-liquid mixing assembly includes the mixing water inlet pipe 4 connected with the throat pipe of the Venturi tube 3, the mixing water inlet pipe 4 includes the water inlet ring 401 and the water inlet conduits 402 distributed in a ring shape and connected to the water inlet ring 401, eight water inlet conduits 402 are arranged, the water outlet of each water inlet conduit 402 is connected with the throat pipe of the Venturi tube 3 in a ring shape and through connection, the accelerated gas is uniformly mixed with the water sprayed by the water inlet conduits 402, the purification assembly includes the cyclone separator 5, one side of the top of the cyclone separator 5 is connected with the outlet of the Venturi tube 3, and a purified gas outlet conduit is arranged through the top of the cyclone separator 5.

[0031] The automatic control system for chemical production realizes effective control and management of dust-containing gas in the reaction furnace by integrating the non-powered acceleration assembly, the gas-liquid mixing assembly and the purification assembly, the non-powered acceleration assembly accelerates airflow by using the principle of fluid dynamics to prevent dust from depositing in the pipeline, the gas-liquid mixing assembly fully mixes water mist with the dust-containing gas to form a gas-liquid mixture, the purification assembly separates dust from the gas by the action of centrifugal force to realize purification treatment, the whole system ensures the stability of the pressure in the reaction furnace, avoids the explosion risk caused by excessively high pressure, and reduces the threat of dust to the environment and operating personnel through effective gas-liquid mixing and purification treatment.

[0032] The working process of the utility model:

[0033] In use, when the pressure in the reaction furnace exceeds the threshold value, the controller starts the pressure relief control valve 2 on the pressure relief pipe 1 to relieve pressure, the dust-containing gas enters the turbine bucket 31 inside through the gas inlet 311 on the front side of the Venturi tube 3, the gas inlet 311 limits the airflow, at this time the airflow entering the turbine bucket 31 increases significantly in speed, the gas inlet 311 guides the airflow tangentially to the inside of the anti-dust deposition self-rotating blade 32, the high-speed airflow entering the turbine bucket 31 exerts force on the anti-dust deposition self-rotating blade 32, causing it to rotate rapidly, stirring the airflow to prevent dust deposition, preventing the dust from mixing with the water sprayed by the water inlet pipe 402 behind, affecting the purification effect, the accelerated dust-containing airflow mixes with the water sprayed by the water inlet pipe 402 which is uniformly distributed in a ring structure, the water enters the throat pipe at high speed from the water inlet pipe 402 which is uniformly distributed in a ring structure, collides with the high-speed gas to form droplets, the dust collides with the droplets to form large particles which are precipitated, the precipitated dust is separated and purified by the cyclone separator and then discharged into the absorption and purification equipment for subsequent treatment, the automatic control system for chemical production realizes effective control and management of dust-containing gas in the reaction furnace by integrating the non-powered acceleration assembly, the gas-liquid mixing assembly and the purification assembly, the non-powered acceleration assembly accelerates airflow by using the principle of fluid dynamics to prevent dust from depositing in the pipeline, the gas-liquid mixing assembly fully mixes water mist with the dust-containing gas to form a gas-liquid mixture, the purification assembly separates dust from the gas by the action of centrifugal force to realize purification treatment, the whole system ensures the stability of the pressure in the reaction furnace, avoids the explosion risk caused by excessively high pressure, and reduces the threat of dust to the environment and operating personnel through effective gas-liquid mixing and purification treatment.

[0034] The utility model has carried out the exemplary description to the utility model in the above-mentioned combination drawing, obviously the utility model concrete realization is not limited by above-mentioned mode, only if the method conception and technical scheme of the utility model have been used to carry out this kind of non-essential improvement, or the conception and technical scheme of the utility model are directly applied to other occasions without improvement, all are within the protection scope of the utility model.

Claims

1. An automatic control system for chemical production, comprising a pressure relief pipe (1) installed at a pressure relief port of a reactor, a pressure relief control valve (2), a pressure sensor, and a controller, characterized in that: The pressure relief control valve (2) is installed on the pressure relief pipe (1), the outlet of the pressure relief control valve (2) is connected with a dust-containing gas discharge pipe (21), the outlet of the dust-containing gas discharge pipe (21) is connected with a non-powered acceleration assembly, the non-powered acceleration assembly is connected with a dust-containing gas liquid mixing assembly, the outlet of the non-powered acceleration assembly is connected with a purification assembly, the pressure sensor is installed on the reaction furnace to detect the pressure inside the reaction furnace, and the pressure sensor is electrically connected with the controller through a wire.

2. The automatic control system for chemical production according to claim 1, characterized in that: The controller includes a data acquisition module, a data processing module and an execution module, the data acquisition module is responsible for collecting the pressure and temperature key parameters in the reaction furnace in real time, the data processing module is used for analyzing and processing the data collected in the reaction furnace, and whether the starting emergency pressure relief measure of the reaction furnace needs to be adjusted is judged, and the execution module is used for controlling the operation of the pressure relief control valve (2) according to the instruction of the data processing module, which ensures the coordination and efficiency of the whole system, can quickly respond in emergency, and protects the safety of equipment and personnel.

3. The automatic control system for chemical production according to claim 1, characterized in that: The non-powered acceleration assembly includes a Venturi tube (3), a turbine bucket (31) and a dust deposition prevention self-rotating blade (32), the inlet of the Venturi tube (3) is connected with the outlet of the dust-containing gas discharge pipe (21), and the Venturi tube (3) is connected with the outlet and the purification assembly; The turbine bucket (31) is located inside the Venturi tube (3) close to one side of the throat pipe, the gas inlet (311) is throughly arranged on the outer circumferential wall of the turbine bucket (31), the dust deposition prevention self-rotating blade (32) is located inside the turbine bucket (31), and the bottom of the dust deposition prevention self-rotating blade (32) is connected with the inner bottom of the turbine bucket (31) through a shaft rod.

4. The automatic control system for chemical production according to claim 3, characterized in that: The gas liquid mixing assembly includes a mixing water inlet pipe (4) connected with the throat pipe of the Venturi tube (3), the mixing water inlet pipe (4) includes a water inlet ring (401) and a water inlet guide pipe (402) arranged in a ring shape on the water inlet ring (401), eight water inlet guide pipes (402) are arranged, and the water outlet of each water inlet guide pipe (402) is connected with the throat pipe of the Venturi tube (3) in a ring shape.

5. The automatic control system for chemical production according to claim 4, characterized in that: The purification assembly includes a cyclone separator (5), one side of the top of the cyclone separator (5) is connected with the outlet of the Venturi tube (3), a purification gas outlet guide pipe is throughly connected and arranged at the top of the cyclone separator (5), and a dust hopper is connected and arranged at the bottom of the cyclone separator (5).

6. The automatic control system for chemical production according to claim 1, characterized in that: The pressure relief control valve (2) is electrically connected with the controller through a wire.

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