CN110643406A

CN110643406A - Preparation of coal-saving combustion improver

Info

Publication number: CN110643406A
Application number: CN201910909786.1A
Authority: CN
Inventors: 马明安; 傅宏伟; 李翔宇
Original assignee: Weihai Xiang Ze New Mstar Technology Ltd
Current assignee: Weihai Xiang Ze New Mstar Technology Ltd
Priority date: 2019-09-25
Filing date: 2019-09-25
Publication date: 2020-01-03

Abstract

The invention relates to a preparation method of a coal-saving combustion improver, which comprises the following components in percentage by weight: cerium nitrate: 2% -6%, copper nitrate: 5-15%, sodium silicate: 5-10%, ethanol: 1-5%, potassium permanganate: 0.1-1%, water: 65-75 percent. Adding the mixture into a liquid stirring kettle in a certain sequence and mixing the mixture evenly to obtain the product. The coal-saving combustion improver disclosed by the invention is simple in production process, reasonable in raw material selection, convenient to add and small in dosage, can act with coal dust under a high-temperature condition, is long in combustion-supporting time, enables the coal dust to be fully combusted to release a large amount of heat, and reduces the pollution of waste gas to the environment in the coal dust combustion process.

Description

Preparation of coal-saving combustion improver

Technical Field

The invention belongs to the field of coal-saving combustion, and particularly relates to a preparation method of a coal-saving combustion improver.

Background

The environmental pollution of air quality in China is mainly coal, the coal as a main primary energy in China accounts for a large proportion of energy consumption of power station boilers, industrial boilers, various related power equipment and the like, especially the coal is reformed and opened, along with the development of national economy in China, the demand of electricity is greatly increased, the consumption of the coal is greatly increased, and a large amount of COx and SO are released in the combustion process of the coal₂And NOx, etc., and therefore, clean combustion technology of coal has become one of the important issues of research.

Disclosure of Invention

Aiming at the defects of the prior art, the invention aims to develop a coal-saving combustion improver to improve the combustion efficiency of fire coal, and the coal-saving combustion improver can shorten the ignition time of the fire coal by 20-25 percent and improve the thermal efficiency of the coal by 3-6 percent.

The technical scheme of the invention is as follows:

a coal-saving combustion improver comprises the following components in percentage by weight: cerium nitrate: 2% -6%, copper nitrate: 5-15%, sodium silicate: 5-10%, ethanol: 1-5%, potassium permanganate: 0.1-1%, water: 65-75 percent.

Preferably, the coal-saving combustion improver comprises the following components in percentage by weight: cerium nitrate: 3% -5%, copper nitrate: 7-15%, sodium silicate: 5-8%, ethanol: 3-5%, potassium permanganate: 0.5-1%, water: 60-80 percent.

When in use, 1-6 per mill of the combustion improver is added into raw coal. After the combustion improver is added, cerium nitrate, ethanol and potassium permanganate induce combustion supporting, so that the ignition rate and the combustion rate of coal are accelerated, and the ignition time of the coal is shortened; the raw coal is activated under the catalysis of copper nitrate and sodium silicate, so that the ignition point of the coal is reduced, the ignition time of the raw coal is shortened, meanwhile, the activation of the raw coal also improves the thermal efficiency of the coal, the thermal efficiency of the coal is improved, the coal consumption for obtaining the same temperature is reduced, and the purpose of saving the coal is achieved. Tests show that the ignition time of coal is shortened by 20-25%, and the thermal efficiency of coal is improved by 3-6%.

DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION

The present invention will be described in detail with reference to specific examples.

Example 1

The coal-saving combustion improver is prepared by uniformly mixing 4 mass percent of cerium nitrate, 10 mass percent of copper nitrate, 7 mass percent of sodium silicate, 4 mass percent of ethanol, 0.6 mass percent of potassium permanganate and 74.4 mass percent of water.

The ignition time of the raw coal before and after the coal-saving combustion improver of the embodiment is added into the raw coal is shown in the following table:

	before adding the medicament	After the medicament is added
			Time of ignition	5s	4s

Example 2

The coal-saving combustion improver is prepared by uniformly mixing 5 mass percent of cerium nitrate, 8 mass percent of copper nitrate, 6 mass percent of sodium silicate, 3 mass percent of ethanol, 0.7 mass percent of potassium permanganate and 77.3 mass percent of water.

The ignition time of the raw coal before and after adding 4 ‰ of the coal-saving combustion improver of this example to the raw coal is shown in the following table:

	before adding the medicament	After the medicament is added
			Time of ignition	5s	3.9s

Example 3

The coal-saving combustion improver is prepared by uniformly mixing 6 mass percent of cerium nitrate, 15 mass percent of copper nitrate, 10 mass percent of sodium silicate, 3 mass percent of ethanol, 0.7 mass percent of potassium permanganate and 65.3 mass percent of water.

The ignition time of the raw coal before and after 2 ‰ of the coal-saving combustion improver of this example was added to the raw coal is shown in the following table:

	before adding the medicament	After the medicament is added
			Time of ignition	5s	3.7s

Claims

1. The coal-saving combustion improver is characterized by comprising the following components in percentage by weight: cerium nitrate: 2-6%, copper nitrate: 5-15%, sodium silicate: 5-10%, ethanol: 1-5%, potassium permanganate: 0.1-1%, water: 65-75 percent.

2. The coal-saving combustion improver as claimed in claim 1, wherein the components of the coal-saving combustion improver and the weight percentages of the components are as follows: cerium nitrate: 2-6%, copper nitrate: 5-15%, sodium silicate: 5-10%, ethanol: 1-5%, potassium permanganate: 0.1-1%, water: 65-75 percent.

3. The coal-saving combustion improver as claimed in claim 2, wherein the components of the coal-saving combustion improver and the weight percentages of the components are as follows: cerium nitrate: 3-5%, copper nitrate: 4-16%, sodium silicate: 5-15%, ethanol: 1-4%, potassium permanganate: 0.1-0.5%, water: 60 to 80 percent.

4. The biomass fuel coking inhibitor according to claim 2, is characterized in that the components and the weight percentages of the components of the coking inhibitor are as follows: cerium nitrate: 4%, copper nitrate: 15%, sodium silicate: 12%, ethanol: 1%, potassium permanganate: 0.2%, water: 67.8 percent.