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a soot blowing method

The technology of soot blower and soot blower is applied in the directions of combustion method, combustion product treatment, removal of solid residue, etc., which can solve the problems of low commissioning rate, high cost, affecting the use effect and equipment operation efficiency, etc. To achieve the effect of less dosage, accurate placement and good soot blowing effect

Active Publication Date: 2016-08-17
天津春辉兴科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Dosing 24 hours a day and running continuously for 2 weeks, the cost is high, which affects the use effect and equipment operation efficiency, so the operation rate is not high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] like figure 1 As shown, the use of solid sootblower, combined with gas pulse sootblower for chemical sootblowing.

[0049]Due to the large boiler, the tail flue rises from the working platform to the high temperature superheater at a height of about 50 meters or more. The small boiler also has a height of nearly 10 meters. To manually deliver these medicaments in each spout powder medicament storehouse, the labor intensity is relatively large. Boiler operators do not have this job post to be responsible for this matter. It is difficult to run. Powdered chemical agent (dispensing system) is a system that transports and distributes powdered chemical agent to each drug storehouse on the working platform (a plane where everyone usually works).

[0050] The solid dosing device includes a dust removal device, a silo and a connecting flange. A rotary feeding valve is provided at the outlet between the silo and the soot blowing pipe. The dust removal device is arranged on t...

Embodiment 2

[0056] like figure 2 As shown, the use of solid sootblower, combined with gas energy pulse sootblower for chemical sootblowing.

[0057] Compared with the previous embodiment, the difference is that the soot blower adopts the gas energy pulse type, and the lower end of the gas energy pulse generating device needs to be equipped with a quick release valve.

[0058] There are mainly two kinds of soot blowing equipment for spraying chemicals, one is gas pulse soot blower; the other is gas energy pulse soot blower. The methods and principles of the two sootblowers are slightly different. But all of them can generate large energy and high-speed airflow in an instant, and spray the medicament to each heating surface of the boiler.

Embodiment 3

[0060] like image 3 As shown, the liquid sootblower is used in conjunction with the gas pulse sootblower for chemical sootblowing.

[0061] The dosing device includes a slurry cylinder, a suction pipe and a Venturi tube. One end of the suction pipe communicates with the slurry cylinder, and the other end communicates with the throat in the middle of the Venturi tube. The two ends of the Venturi tube Connect with soot blowing pipe.

[0062] The cloth conveying device includes a general silo, a slurry pump, a compressor, a material guide pipe, a discharge pipe and an air source pipe. The slurry pump includes an air inlet, a material inlet and a material outlet. The inlet The gas port is connected with the output end of the compressor through the gas source pipe, the feed port is connected with the main storage bin through the feed pipe, and the discharge port is connected with the slurry cylinder through the discharge pipe.

[0063] The main difference between the liquid chem...

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Abstract

The invention provides a soot blowing method, which includes a pulse generating device connected to each other through a soot blowing pipe, a dosing device and a nozzle, the dosing device communicates with a cloth conveying device, and the cloth conveying device regularly delivers medicine to the dosing device, and the nozzle Extending into the flue, the dosing device and the cloth conveying device are connected to the programmable logic controller, and the dosing device is equipped with a cleaning agent control valve. The present invention selects a chemical cleaning agent, uses a physical method to turn the ash into loose ash and blows it off through oxidation-reduction reaction, so as to achieve an ideal soot blowing effect; the feeding device is directly and accurately put in, the drug is placed in a precise position, and the amount of drug to be put in is accurate. Small, the agent that actually participates in the chemical reaction increases, and the content of the agent in the flue gas decreases. In the present invention, the function of adding chemical agent is added, and a smaller amount of chemical cleaning agent is used to achieve the effect of less agent consumption, good soot blowing effect, and convenient agent replacement, which is better than physical soot blowing method in dealing with hard shell ash. Incomparable effect.

Description

technical field [0001] The invention belongs to the field of auxiliary machinery for boilers, and in particular relates to a chemical soot blowing method for blowing soot on the heated area of ​​a flue. Background technique [0002] At present, the commonly used physical soot blowing methods include steam soot blowing, gas energy pulse soot blowing and gas pulse soot blowing, which have obvious effects on loose ash deposits, but are difficult to work on hard shell ash deposits. [0003] Therefore, some chemical dedusting agent manufacturers have developed a series of dedusting agents according to the hard shell ash accumulation caused by different salts. They are added to coal, and after combustion and gasification, they are reassembled through a series of equipment and high temperature zones. Enter the tail flue that needs to be cleaned for cleaning. There are many problems in the chemical cleaning method currently used. After the cleaning agent passes through the high tem...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23J3/02
Inventor 王胜军
Owner 天津春辉兴科技有限责任公司