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Thermal equipment operation cleaning agent and its application

A thermal equipment and cleaning agent technology, applied in the field of cleaning agents, can solve the problems of steam turbine efficiency decline and corrosive cleaning medium, etc., and achieve the effects of reduced total emissions, broad commercial application prospects, and outstanding economic efficiency

Active Publication Date: 2012-01-11
BEIJING CHINA POWER LONG YUAN ENVIRONMENTAL PROTECTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] (2) The efficiency of the steam turbine has dropped significantly
The problem is that these cleaning media are corrosive, and they also dissolve and corrode metal equipment while dissolving scale
[0023] At present, the use of fatty substances such as octadecylamine as a "cleaning agent for thermal system operation" has not been reported.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0094] Embodiment 1, when the thermal equipment is running, use the pure octadecylamine emulsion with a dosing pump (lift: 4Mpa, flow: 1.5~2m 3 / h, power supply 380V) into the thermal system through the water supply pipeline. The dosing point is selected on the water pipe of the deaerator. The resulting cleaning process is as follows:

[0095]Deaerator Downpipe→ Feedwater Prepump→ Feedwater Pump→ High Pressure Heater→ Economizer→ Steam Drum→ Surrounding Water Cooling Wall (Including Concentrated Downcomer)→ Low Pressure Superheater→ High Pressure Superheater→ Steam Turbine High Pressure Cylinder and Blades→Low Pressure Reheater → high pressure reheater → medium and low pressure cylinder and blades of steam turbine → entire steam side surface of condenser tube → condensate pump → condensate pipe → shaft seal cooler → low pressure heater → deaerator.

[0096] The scale and corrosion product powder on the water side of the boiler are discharged through the boiler blowdown syste...

Embodiment 2

[0099] Embodiment 2, when the thermal equipment is running, the pure hexadecylamine emulsion is used with a dosing pump (lift: 4Mpa, flow: 1.5~2m 3 / h, power supply 380V) into the thermal system through the water supply pipeline. The dosing point is selected on the water pipe of the deaerator. The rest are the same as embodiment 1.

Embodiment 3

[0100] Embodiment 3, when the thermal equipment is running, the pure tetradecylamine emulsion is used with a dosing pump (lift: 4Mpa, flow: 1.5~2m 3 / h, power supply 380V) into the thermal system through the water supply pipeline. The dosing point is selected on the water pipe of the deaerator. The rest are the same as embodiment 1.

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Abstract

The invention provides an application of alicyclic amine, such as octadecylamine, cetylamine, tetradecy lamine and dodecylamine, in thermal equipment operation cleaning as a cleaning agent. The invention further provides an application of a mixture of any two or three or four components selected from octadecylamine or cetylamine or tetradecy lamine or dodecylamine at random mass ratio in thermal equipment operation cleaning as a cleaning agent. According to the invention, insoluble peeling descaling replaces soluble descaling, thus not dissolving and corroding metal, eradicating the harm of traditional cleaning technologies to equipment and accomplishing the production mode of cleaning thermal equipment during operation, protecting during cleaning and efficiently operating during protection. Powder units are always in cleaning state, therefore making powder units to operate safely and stably and reaching the purpose of energy saving and emission reduction. The cleaning agent provided by the invention is a grate breakthrough in traditional cleaning technologies. In addition, the medicine addition condition of using octadecylamine as a thermal equipment outage anticorrosion protective agent is changed, the film forming quality and anticorrosion effect are guaranteed, and the function of outage anticorrosion is reinforced.

Description

Technical field [0001] The invention relates to a cleaning agent, in particular to a cleaning agent used in running and cleaning thermal equipment and its application. Background technique [0002] In today's society, the development of human production and the limitation of natural resources have constituted an inevitable contradiction in modern production. Saving resources has become a common goal around the world. [0003] According to the “Twelfth Five-Year Plan” Comprehensive Work Plan for Energy Conservation and Emission Reduction promulgated by the state, for thermal power generation companies, tapping their potential, reducing energy consumption, increasing output, and improving labor productivity are the foundation of their foothold and survival. The fundamental way to achieve the above goals is to ensure the water vapor quality of the boiler, keep the unit clean, free from corrosion and scale, and operate safely and efficiently. [0004] Corrosion and fouling of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23G1/14
Inventor 张啸
Owner BEIJING CHINA POWER LONG YUAN ENVIRONMENTAL PROTECTION TECH
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