Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A kind of coal slime combustion-supporting desulfurization composite additive and its preparation method

A compound additive and coal slime technology, which is applied in fuel, solid fuel, petroleum industry, etc., can solve the problems of high cost of flue gas desulfurization technology, difficult by-product treatment, and easy pollution of the environment, so as to save resources, reduce production costs, The effect of reducing environmental impact

Active Publication Date: 2017-05-10
SHANXI UNIV
View PDF14 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0020] In order to overcome the technical problems that coal slime and dry discharge calcium carbide slag are difficult to handle, accumulation is easy to cause pollution to the environment, and the combustion efficiency of existing coal-fired power plant boilers is low, the cost of flue gas desulfurization technology is high, and the by-products are difficult to handle, the present invention provides a Coal slime combustion-supporting sulfur-fixing composite additive made of coal slime, dry discharge carbide slag, fly ash and additives, and burned in the boiler to increase the combustion and desulfurization efficiency in the furnace

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Step 1: Sieve the dry carbide slag produced in the dry acetylene production process, use the particles with a size of 100 μm and below directly, and grind the large particles above 100 μm to 100 μm and below for use;

[0043] Step 2: Feed the mixture of calcium carbide slag and fly ash and additives through the star wheel feeder, and drop them onto the coal slime conveyor belt. Among them, the mass percentage of mixed materials: 80% for coal slime, 17% for dry discharge carbide slag and fly ash as a whole, 1% for auxiliary agent weathered coal, 1% for auxiliary agent potassium carbonate, and 1% for strontium carbonate. The mass ratio of fly ash to carbide slag is 1:10;

[0044] Step 3: The mixture of coal slime and step 2 enters the twin-shaft mixer for stirring;

[0045] Step 4: The feeding belt conveyor sends the uniformly stirred material into the stuffing bin for homogenization. The homogenization temperature is 40°C and the time is 8 hours;

[0046] Step 5: The f...

Embodiment 2

[0049] Step 1: Sieve the dry carbide slag produced in the dry acetylene production process, use the particles with a size of 100 μm and below directly, and grind the large particles above 100 μm to 100 μm and below for use;

[0050] Step 2: Feed the mixture of calcium carbide slag and fly ash and additives through the star wheel feeder, and drop them onto the coal slime conveyor belt. Among them, the mass percentage of mixed materials: 70% for coal slime, 18% for dry discharge carbide slag and fly ash as a whole, 10% for auxiliary agent weathered coal, 1% for auxiliary agent potassium carbonate, and 1% for strontium carbonate. The mass ratio of fly ash to carbide slag is 1:12;

[0051] Step 3: The mixture of coal slime and step 2 enters the twin-shaft mixer for stirring;

[0052] Step 4: The feeding belt conveyor sends the uniformly stirred material into the stuffing bin for homogenization. The homogenization temperature is 60°C and the time is 5 hours;

[0053] Step 5: The ...

Embodiment 3

[0056] Step 1: Sieve the dry carbide slag produced in the dry acetylene production process, use the particles with a size of 100 μm and below directly, and grind the large particles above 100 μm to 100 μm and below for use;

[0057] Step 2: Feed the mixture of calcium carbide slag and fly ash and additives through the star wheel feeder, and drop them onto the coal slime conveyor belt. Among them, the mass percentage of mixed materials: 40% for coal slime, 48% for dry discharge carbide slag and fly ash as a whole, 10% for auxiliary agent weathered coal, 1% for auxiliary agent potassium carbonate, and 1% for strontium carbonate. The mass ratio of fly ash and carbide slag is 1:15;

[0058] Step 3: The mixture of coal slime and step 2 enters the twin-shaft mixer for stirring;

[0059] Step 4: The feeding belt conveyor sends the uniformly stirred material into the stuffing bin for homogenization. The homogenization temperature is 60°C and the time is 5 hours;

[0060] Step 5: The...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to the technical field of slime combustion-supporting desulfurizing composite additives, in particular to a slime combustion-supporting desulfurizing composite additive and a preparing method thereof. The slime combustion-supporting desulfurizing composite additive is made from slime, dry-discharged carbide slag, fly ash and aid; the additive is combusted in a boiler so as to improve interior combustion efficiency and desulfurizing efficiency (65% to 75%); according to percent by weight, the components include 40% to 80% of slime, 18% to 48% of the dry-discharged carbide slag and fly ash, 1% to 10% of aid weathered coal, 0.1% to 1% of aid potassium carbonate, and 0.1 to 1% of aid strontium carbonate; the slime is 20% to 30% in water content, and the mass ratio of the fly ash to the carbide slag is 1:(10:15). The additive is applied mainly for interior desulfurization in thermal power plants.

Description

technical field [0001] The invention relates to the technical field of a combustion-supporting desulfurization composite additive used in boilers, and more specifically relates to a coal slime combustion-supporting desulfurization composite additive and a preparation method thereof. The composite additive is made from the by-product coal slime in the coal washing process, the waste slag produced in the dry process of acetylene production, the fly ash produced in the circulating fluidized bed of the thermal power plant, and additives. Desulfurization achieves treating waste with waste. Background technique [0002] my country is a country that uses coal as its main energy source. Sulfur dioxide (SO 2 ) is one of the main air pollutants, and among them, coal-fired power plants emit SO 2 proportion ranks first. As the country pays more and more attention to environmental protection, the research and application of boiler desulfurization technology for ultra-low emissions fro...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C10L9/10
Inventor 程芳琴武俊智杨凤玲娄慧茹王宝凤
Owner SHANXI UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com