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Method for automatic control of water cooler recirculated water

A water cooler and circulating water technology, which is applied in lighting and heating equipment, petroleum industry, cracking, etc., can solve problems such as uneconomical, safety accidents, waste of circulation, etc., and achieve the effect of saving circulating water

Active Publication Date: 2011-05-25
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are 16 hours in a day to vent the circulating water in the automatic control of the aftercooler of the tower, which has been wasting and circulating, which is very uneconomical. If the hand valve for turning off the water cooler is used, the operator will not have any problems in the event of an accident. Time to open the water cooler will also cause safety accidents

Method used

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  • Method for automatic control of water cooler recirculated water
  • Method for automatic control of water cooler recirculated water
  • Method for automatic control of water cooler recirculated water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0011] The model of the automatic control valve: ZSHWY-25B, the limit is set through DCS configuration.

[0012] This process can realize the commissioning and deactivation of the water cooler under the emergency state, and will not cause safety accidents during the venting and pressure relief.

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Abstract

The invention relates to a method for automatically controlling circulating water of a water cooler at the top of a vent tower of a delaying coking device. A self-controlling adjusting valve is connected on the main water returning pipeline of the water cooler, a thermoelectric couple connected with the adjusting valve is installed on a pipeline at an outlet opening at the top of the vent tower to perform temperature limiting control, when the temperature of the outlet opening of the vent tower is set to reach 150 DEG C, a self-controlling valve is opened by 50 percent, when the temperature reaches 250 DEG C, the self-controlling valve is opened by 100 percent, the gradual closing of the adjusting valve can be realized along with temperature reduction, finally the closing is realized under the circumstance of not venting, and the circulating water quantity is reasonably saved by about 4000 to 6000 tons per day.

Description

Technical field: [0001] The invention relates to a method for automatically controlling the circulating water of a water cooler at the top of a delayed coking device for venting. Background technique: [0002] The aftercooler at the top of the vent tower of the delayed coking unit generally adopts two or several groups of water coolers connected in parallel or in series, and there is basically no adjustment method. In the daily production of the coking unit, only 6-8 is used in the operation of large steam blowing and water supply. For a small time, it is not used for the rest of the time, and the water cooler must always be used for circulating water. The reason is that there is an emergency venting requirement in the event of an accident, especially the coke tower safety valve is connected to the venting tower. If it is not put into use, Safety accidents will occur after the safety valve of the coke drum is opened and jumped. However, there are 16 hours in a day to vent t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G9/16F28F27/00
Inventor 张峰
Owner PETROCHINA CO LTD