Device and method for manufacturing dry ice by utilizing radiant heat to produce active lime

A technology of active lime and radiant heat, applied in the fields of chemical industry and metallurgy, can solve the problem of high cost of production and operation of raw materials, and achieve the effect of easy control of decomposition temperature, solution of environmental pollution and easy operation.

Inactive Publication Date: 2015-01-07
李正福
View PDF8 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is relatively high in terms of raw material cost and production operation cost.

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Device and method for manufacturing dry ice by utilizing radiant heat to produce active lime
  • Device and method for manufacturing dry ice by utilizing radiant heat to produce active lime

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0037] The technical solutions of the present invention are described below through specific embodiments. On the premise that there is no conflict with the purpose of the present invention, the embodiments mentioned below and the technical features in the embodiments can be combined with each other.

[0038] Such as figure 1 As shown, the technical solution adopted in the present invention is: use pulverized coal or coal gas to burn in the combustion chamber 5 to generate heat and pass through the heat transfer wall 9 to heat the limestone to the decomposition temperature of 1000-1050 degrees for indirect calcination to produce qualified high-performance Activated lime and pure carbon dioxide are recycled to generate steam from waste heat of waste gas.

[0039] An embodiment of the device for producing active lime using radiant heat to make dry ice of the present invention includes: a plurality of combustion chambers 5, a plurality of forehearths 6 arranged between the plurali...

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 provides a device and a method for manufacturing dry ice by utilizing radiant heat to produce dry ice. The device and the method are applied to lime stones with small particle size of 20-40 mm in mine production. Roasting is carried out through heat transferred through radiation by a combustion chamber in a roasting chamber, the roasted lime stones are decomposed into calcium oxide and carbon dioxide, the calcium oxide is cooled, discharged out through an ash discharging device and fed into an ash bin for storage, the carbon dioxide passes through a drying device, a pressure device, a carbon dioxide liquefying plant and a dry ice device through connected waste gas pipelines to generate dry ice, after coal gas or powdered coal in the combustion chamber is combusted, the coal gas or powdered coal is discharged out through a fan for waste heat recovery and are discharged through a chimney. Active lime with higher quality can be obtained, pure carbon dioxide can be effectively recycled and is processed and manufactured into food grade dry ice, and meanwhile waste heat can be recycled for secondary use, so that a new way with larger market prospect is developed for the production of active lime and comprehensive application of resources in our country.

Description

technical field [0001] The invention relates to the technical fields of metallurgy and chemical industry, in particular to a device and a method for producing high-performance active lime in the metallurgical industry and utilizing waste gas to produce dry ice. Background technique [0002] The 2009 Copenhagen Climate Change Symposium brought the low-carbon economy into the global focus. The low-carbon economy is an economic development model based on low energy consumption, low pollution, and low emissions. It is a fundamental change to the current production mode that consumes a lot of fossil energy and emits a lot of carbon dioxide. In 2005, it decreased by 40-45%, and was included in the medium and long-term planning of national economic and social development as a binding indicator. [0003] As an important resource, carbon dioxide is widely used. At the same time, the emission of carbon dioxide is also one of the main causes of global warming. Therefore, effective rec...

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 Applications(China)
IPC IPC(8): C04B2/10C01B31/22C01B32/55
CPCY02P20/10Y02P20/129Y02P40/40
Inventor 李正福
Owner 李正福
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap