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Chemical process control solution

Chemical process control solution

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With the continuous expansion of the production scale, the intensification of the production process, the strict requirements for the quality of the products, and the fierce competition among the companies, the manual operation and general control far can not meet the requirements of modern production. The industrial process control system has become an essential part of the industrial production process. It is the main technical means to ensure the safety, optimization, low consumption and efficient production of modern enterprises.

The experienced Hongye for the overall development of the chemical industry, the production of ring bamboo to provide a full set of enterprise level intelligent solution. In our solution, integrated into the industrial control technology of Hongye automation leading industry, rich engineering face, all directional technical support and customized engineering and after-sales service provided by the manufacturer. Hung Ye has been providing solutions for the chemical industry for a long time to help businesses cope with the more complex challenges brought about by rapid changes in regulatory environment. Hongye is committed to providing a modular, integrated and open control platform to the chemical industry to help enterprises reduce the cost of the product cycle, to ensure the safety of production in every link, to shorten the time for the product to be put in the market, to save resources and to improve the efficiency of production. The complete production control plan of equipment and automatic control system provides the mature production process to the enterprise.

 

Typical application case

Control scheme

Typical application case control plan for glycerin workshop

In general, the production of glycerol is divided into the following parts: the raw material warehouse and the tank area, the pre treatment section, the distillation section, the circulating water section and the finished tank area.

The following are some automatic control schemes for typical sections:

First, Raw materials storehouse and tank farm liquid level detection.

Control requirements:

1. Two line system.

2.The range is 0~5000t, and the error range is 0.5%

3. Alarm for upper and lower limit alarm. Yin Chao Shi trend function. Save 1 times a second

 

Second, distillation stage

 

1. system interface diagram

 

2. control requirements

  1. The upper and lower limits of the parameters can be set.
  2. The control mode is PID control.
  3. Parameters retain historical and historical trends, save once per minute.

 

3. Take one cold bubble and two cold hot water tank as an example.

The mechanism of water replenishment control:

  1.  you can set the pump in automatic mode or manual mode. In automatic mode, the start and stop of the pump is controlled by computer. In manual mode, the start and stop of the pump is controlled by the control button on the scene.
  2. The water level of B and two hot and cold water tanks will decrease with the evaporation of water and the increase of cold water. When the water is automatically supplied, when the water level is low enough to set off the line, the two cold water pump will start automatically, and the water level will be automatically closed when the water level is set to the upper limit.
  3. The water level of a cold drum will decrease with the evaporation of water. When the water level is low enough to set off the line, a cold water pump will start automatically, and the water level will be automatically closed when the water level is set to the upper limit.

 

Third: historical report service

(1) overview

Data report is an important form to record data and status in production process and record data. It is an essential part of the production process. It can reflect the real time production situation of the system. It can also make statistics and analysis of the long-term production process, so that managers can grasp and analyze the production situation in real time.

(2) function

  1. Automatically and regularly backup the data files to be cleaned up on the production report server daily to process the system.
  2. Check the previous history at any time, review the previous process parameters.

 

Fourth, Historical trend

(1) overview

Trend chart is computer real time (in seconds) record run data, with time as abscissa, to run the data as the ordinate of the curve According to the length of the storage time can be divided into real-time trends and historical trend Real-time trend began to record only open real-time trend diagram, when close the real-time trend. This data is not stored and historical trend can be stored for a long time, this time to quote according to the control system of hard disk capacity and specific needs

(2) the role of the trend circle

  1. By looking at the historical trend, we can understand the change of a certain data and provide guidance for the next stage of operation.
  2. By looking at the historical trend, we can understand the operation of a certain enemy.
  3. By looking at the historical trend, we can analyze the problems in the system and provide the data basis for solving the problem.
  4. By by looking at the historical trend, we can analyze the occurrence of the accident, find out the cause of the accident and determine the responsibility of the accident.
  5. By by looking at the historical trend, we can also determine whether there are some problems in some meters, such as whether the liquid level is drifting, whether the valve is tracking and adjusting or not.

HDC company has a full set of solutions for the whole product production cycle. It meets the requirements of end users and industry specifications. To help them achieve quality control and meet the requirements of consumers. This series of strategic pigs makes HDC company as the preferred cooperation in the chemical industry. Partners provide a comprehensive and rich solution for the entire product life cycle.

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