PH automatic measurement and control device in external cycle
An external circulation and automatic technology, applied in the direction of non-electric variable control, ratio control, chemical variable control, etc., can solve problems such as product quality impact, reduce safety risks, and realize the effect of automatic detection and control
Pending Publication Date: 2019-06-11
YIBIN TIANYUAN GRP CO LTD
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Problems solved by technology
[0003] The invention discloses an external circulation automatic pH measurement and control device, which can realize the automatic detection and control of the pH value to adjust the pH value of the solution in the kettle, and solve the problem of the temperature change of the measurement medium caused by the heat dissipation of the pipeline while the external circulation detection is performed. quality impact issues
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[0017] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0018] Such as figure 1 As shown, the present invention provides a device for automatic pH measurement and control of external circulation, including a reactor body 1, which is respectively provided with a sampling port 2 and a sample return port 3, and is also provided with a pH regulator inlet 15 , the reaction kettle body 1 is provided with the following device, which includes a sampling pump 4 and a pH detection unit 56 connected in series between the sampling port 2 and the sample return port 3 in series with the heat tracing pipe 7; The value signal controls the adjustment unit 57 that drips the pH regulator into the pH regulator inlet 15; and the temperature control unit 55 that controls the temperature of the medium in the heating pipe 7 according to the temperature of the medium in the reactor body 1 to keep it consistent.
[0019] The tempera...
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The invention belongs to the field of ACR seed polymerization production, particularly relates to automatic measurement and control of material pH, and provides a pH automatic measurement and controldevice in an external cycle. The device comprises a reactor body that is respectively provided with a sampling port, a sample return port and a pH modifier adding port; and the reactor body is externally provided with the following devices of a sampling pump and a pH detecting unit which are sequentially connected between the sampling port and the sample return port to connect a heat tracing tubein series; a modifying unit for controlling to dropwise add the pH modifier into the pH modifier adding port according to a pH signal of the pH detecting unit; and a temperature control unit for controlling the temperature of the medium in the heat tracing tube to keep consistent to the temperature of the medium in the reactor body according to the temperature of the medium in the reactor body. The pH automatic measurement and control device can realize automatic detection and control of the pH value by automatically controlling pH values of each reaction stage, and solves the problem that themeasurement medium has an influence on the product quality due to the heat dissipation temperature change of the pipeline while performing the external circulation detection.
Description
technical field [0001] The invention belongs to the field of ACR seed polymerization production, and in particular relates to automatic detection and control of material pH. Background technique [0002] The production of ACR (high-impact special resin) adopts the emulsion polymerization method for batch polymerization reaction. After adding materials to the ACR seed reactor, the ACR seed reactor will go through three stages of reaction, and each stage needs to measure the ACR seed reactor. The pH value of the material inside. The existing technology is to compare the manually measured pH value with the pH set value of each stage after the end of the reaction in each stage. In the past, the pH measurement was carried out inside the container, and the pH adjustment dose was manually controlled until the pH was manually analyzed. The value reaches the control range of the pH set point. In each stage, the pH value needs to be analyzed multiple times, and the pH value and the ...
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Login to View More IPC IPC(8): G05D21/02
Inventor 肖正君陈洪钟志宏缑可贞
Owner YIBIN TIANYUAN GRP CO LTD