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Method for automatically controlling methylhydrazine production process through DCS

A technology of production process and methyl hydrazine, which is applied in general control system, program control, comprehensive factory control, etc., to achieve a stable and sufficient reaction process, avoid hidden dangers, and ensure the safety of workers

Pending Publication Date: 2022-03-01
DONGLI NANTONG CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the above-mentioned problems that existing methylhydrazine production technique exists, propose a kind of method by DCS automatic control methylhydrazine production process

Method used

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Examples

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Embodiment Construction

[0019] The technical solution of the present invention will be further described below according to an embodiment. In the description of the present specification, the contents of the examples are included in at least one embodiment of the present invention in conjunction with the particular techniques described herein. In the present specification, schematic representation of the above terms is not necessarily the same embodiment or examples. Moreover, the specific technical features described may be combined in any one or more embodiments or examples.

[0020] This embodiment proposes a method of automatically controlling the methyl hydrazine production process by DCS, including the steps of:

[0021] 1) Setting stage: According to the operation ticket, the operation parameters are preset by the DCS system;

[0022] 2) Turning stage: DCS system is transferred to hydrochloride by the rotation system to the methylated kettle, then methanol and hydrochloric acid;

[0023] 3) Startu...

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PUM

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Abstract

The invention provides a method for automatically controlling a methylhydrazine production process through a DCS (Distributed Control System), which comprises the following steps of: presetting operation parameters through the DCS, controlling the opening degree of a steam regulating valve, stably raising the kettle temperature, closing the steam regulating valve after the pressure in the kettle reaches a pressure set value for closing steam, and then releasing heat through reaction until the temperature in the kettle reaches a heat preservation temperature set value, or after the pressure in the kettle reaches a heat preservation pressure set value, entering a pressure control heat preservation stage; according to the fluctuation of the difference value between the actual pressure value in the kettle and the heat preservation pressure set value, the pressure in the kettle is kept stable through water dripping operation, after the heat preservation time reaches the heat preservation duration set value, the circulating water inlet and outlet valve is fully opened, and the circulating water inlet and outlet valve is closed when the temperature and pressure in the kettle reach the temperature reduction pressure set value. The automatic production process of methylhydrazine is realized through the DCS system, the reaction process is accurate and controllable, the product quality is effectively improved, the labor cost is saved, hidden dangers caused by manual misoperation are avoided, and meanwhile, the safety of workers is guaranteed.

Description

Technical field [0001] The present invention relates to a method of automatically controlling the production process by DCS, belonging to the technical field of chemical pharmaceutical. Background technique [0002] Methyl hydrazine is also known as a methylhydrazine, is an important chemical product, structural formula for CH 3 NHNH 2 . Methyl hydrazine and strong oxidant contact can self-ignition, encounter fire and high thermally vulnerable combustion explosion, often composed of oxidant and other oxidant and other oxidant, for aerospace, spacecraft and satellite monitoring system, nearly a few Emergency has been widely used in refined chemical products such as synthetic pharmaceuticals, pesticides. [0003] The conventional methylhydrazine production process is made of hydrochloride by methanol and hydrochloric acid. The hydrochloric acid is hydrochloric acid, and the heating temperature is warmed, and the kettle is controlled by a point water during the insulation phase, and...

Claims

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Application Information

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IPC IPC(8): G05B19/418C07C241/02C07C243/14
CPCG05B19/41865C07C241/02C07C243/14G05B2219/33273
Inventor 陆凌军沈建祥李鑫鑫
Owner DONGLI NANTONG CHEM