Acetylene production process operation displacement and charging control method

A technology of production process and control method, applied in the parts of acetylene gas generator, acetylene generator, comprehensive factory control, etc., can solve problems such as chaotic execution, potential safety hazards of replacement time, non-execution of procedures, etc., to overcome product quality influence, optimize product quality, and realize the effect of automatic control

Inactive Publication Date: 2016-11-16
石河子天域新实化工有限公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because there is no special limit or guarantee for the replacement time, there is a risk of safety hazards due to insufficient replacement time; secondly, because there is no reset for all internal switches and valve positions, there is a risk of program non-execution or chaotic execution

Method used

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  • Acetylene production process operation displacement and charging control method
  • Acetylene production process operation displacement and charging control method

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Experimental program
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Effect test

Embodiment 2

[0018] The difference between embodiment 2 and embodiment 1 is: the preset nitrogen replacement time value T 1 is 6 minutes, if the nitrogen main pipe pressure is less than the preset A value, then T 1 +2 minutes. That is, 8 minutes of nitrogen filling is the basis for judgment.

Embodiment 3

[0019] Embodiment 3 differs from Embodiment 1 in that: the control station newly adds a time relay device, and the preset time relay value T 2 is 6 minutes, if the nitrogen main pipe pressure is less than the preset A value, then T 2 +2 minutes. That is, 8 minutes of nitrogen filling is the basis for judging, and T 1 with T 2 The time condition must be satisfied at the same time.

Embodiment 4

[0020] The difference between embodiment 4 and embodiment 1 is that the DCS controls the internal switching value, and the internal switch and valve position start and reset program is newly added. Its function is to reset all internal switches and valve positions to initial state.

[0021] The preset pressure, temperature, and replacement time reference values ​​in the above embodiments can be multiple based on experience, and the specific values ​​are very important to the size and reaction characteristics of the acetylene generator, hopper, and storage hopper.

[0022] In the above embodiment, the preset nitrogen replacement time T 1 = T 2 .

[0023] The present invention mainly adds a time relay to the control station in the replacement and feeding stage, adds a DCS control replacement time setting and judgment program, and improves the program by adding an internal switch and a valve position start and reset program. Others are the same as the prior art.

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Abstract

The invention discloses an acetylene production process operation control method and particularly relates to a displacement and charging operation process DCS control method. An emptying-displacement-charging-reaction process of an acetylene generator is controlled through a DCS, a displacement and charging process is changed into an automatic control mode, a nitrogen filling pressure A value is preset, an automatic replacement time T1 value is set, a time relay is newly added, the time T2 is set, operation starts to reach the A value, a replacement button starts to enter a replacement stage, the replacement time satisfies the T1 and the T2, a next program step is automatically carried out, if the nitrogen filling pressure is determined by the DCS to be smaller than the A value, the replacement time is T1+2 minutes and the T2+2 minutes, the T1+2 minutes and the T2+2 minutes are both satisfied, a next step is automatically carried out, the program is over, all internal switches and valve positions are reset to initial states, a reaction stage is finally entered, and ideal control standards can be realized through the previous operations. The method is further advantaged in that operation is convenient and rapid, influence of artificial factors can be solved, and automatic control and precision for the key acetylene production process are realized.

Description

technical field [0001] The invention relates to a method for controlling the operation of an acetylene production process in the field of automation control, in particular to a DCS control method for the replacement and feeding operation process. Background technique [0002] At present, the known acetylene production process technology is very mature. The main technological process is: the production of acetylene by calcium carbide method. The crushed calcium carbide blocks of a certain specification enter the generating bin of the generator from the small hopper and storage hopper of the acetylene generator of the bucket elevator, and the calcium carbide and water react to form acetylene gas, and the crude acetylene gas produced enters the generator after gas-liquid separation. Stored in a gas cabinet, the acetylene in the gas cabinet removes impurities such as hydrogen sulfide and phosphine to become refined acetylene, then removes moisture and enters the compressor, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/418C10H21/00C10H11/00
CPCY02P90/02G05B19/41875C10H11/00C10H21/00G05B19/4183
Inventor 吴彬朱江军张俊平周红燕李春江
Owner 石河子天域新实化工有限公司
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