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Method for using coal tar as starting ignition fuel of pulverized coal firing boiler

A pulverized coal boiler and coal tar technology, which is applied in the direction of combustion methods, fuels, and liquid carbon-containing fuels, can solve problems such as environmental pollution, high cost, and large diesel consumption

Inactive Publication Date: 2012-11-07
洛阳香江万基铝业有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the existing diesel ignition technology for pulverized coal boilers, there is a large consumption of diesel oil and high cost, and a certain amount of phenol water will be produced during the operation of the gasifier, which will pollute the environment; the invention provides a Coal tar is used as the method for starting the ignition fuel of pulverized coal boiler

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] A kind of method of using coal tar as the starting ignition fuel of pulverized coal boiler of the present invention is to implement under the condition of not changing boiler operation mode, and specific content is as follows:

[0021] 1. Preparation of mixed fuel

[0022] Prepare a 5m next to the coal tar storage tank in the gas workshop 3 First, add the diesel oil that needs to be added into the mixing tank, turn on the stirring device, then add waste engine oil, and stir evenly; then add EP-V additives for outsourcing, and finally add coal tar, and stir evenly; continuously stir for 30~ 60 minutes, mix well. Keep the temperature in the mixing tank above 40°C during the mixing process. The mixed fuel is transported to the thermal power station by car and pumped into the mixed fuel storage tank. During the injection process, it passes through a filter with a 50-mesh filter to remove coarse particles and impurities, and stores at 40°C, about 15 to 20 tons at a time. ...

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PUM

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Abstract

The invention discloses a method for using coal tar as starting ignition fuel of a pulverized coal firing boiler. In the method, the coal tar generated by a gas generator is modified and improved in quality by coal tar combustion technology so as to replace diesel as the ignition fuel of the boiler to greatly reduce the consumption of expensive diesel, and simultaneously polluting 'phenol water' which is generated in the production process of the gas generator can be burnt out so as to reduce the environmental pollution. The method comprises the following steps of: 1, preparing mixed fuel of coal tar; 2, transporting; 3, filtering; 4, preparing aqueous solution of EP-II type additive; 5, mixing the mixed fuel of coal tar and the aqueous solution of EP-II type additive; and 6, transferringthe mixed fuel of coal tar to four ignition oil guns of the boiler respectively. The method fully utilizing coal tar, phenol water and waste lubricant to replace diesel to ignite and start the boilerhas the advantages of saving boiler ignition operation cost, reducing diesel consumption, saving energy, reducing environmental pollution and realizing clean production.

Description

technical field [0001] The invention relates to the technical field of ignition of a pulverized coal boiler, in particular to a method for using coal tar as a fuel for starting and igniting a pulverized coal boiler. Background technique [0002] At present, coal-fired boilers are used in the production of alumina to provide high-pressure steam for the production of alumina. The fuel used for the ignition of the boiler is diesel or heavy oil, and the cost is relatively high. In the alumina production process, the fuel used for the roasting of aluminum hydroxide is self-produced gas. In the process of self-gas production, the gasifier produces a certain amount of coal tar. Coal tar has been difficult to digest internally for a long time, and it has been used as a chemical raw material that can only be disposed of cheaply externally. Coal tar has not been well utilized. At the same time, a certain amount of phenolic water will be produced during the operation of the gasifier,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23K5/10F23K5/06F23K5/18C10L1/10C10L1/04C10L1/183
Inventor 金立业周孑民蒋炜邓胜祥李自强匡中付
Owner 洛阳香江万基铝业有限公司