Unlock instant, AI-driven research and patent intelligence for your innovation.

Two-section type rotary kiln pyrogenation charcoal producing technique

A production process and pyrolysis carbon technology, which are applied in the petroleum industry, indirect heating and dry distillation, coke ovens, etc., can solve the problems of low efficiency, large waste of resources and serious pollution of small vertical carbonization furnaces, and are beneficial to the stable production of blast furnaces. The effect of operation, saving resources contribution, and expanding the scope of resources

Inactive Publication Date: 2008-03-26
梁尚彧
View PDF0 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the shortcomings of low efficiency, serious pollution, and large waste of resources brought about by the production of pyrolytic carbon by small-scale vertical carbonization furnaces due to the increasingly tight supply of high-quality coal injected into blast furnaces, the present invention provides an energy-saving, environmentally friendly, high-efficiency waste heat utilization, Two-stage rotary kiln pyrolytic carbon production process to improve the operating environment of pyrolytic carbon production

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
  • Two-section type rotary kiln pyrogenation charcoal producing technique

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The coal preparation workshop sends the raw coal to the sieve 2 through the belt conveyor 1 for screening. The lump coal is a high-quality lump coal with high volatile content, and its specification is 6 mm∽40 mm. Pulverized coal smaller than 6 mm is used as steam coal, and coal larger than 6 mm is sent to the pyrolysis workshop through the storage hopper 3, and enters the first-stage rotary kiln 4 for dry distillation and pyrolysis. Lump coal is added from the kiln tail of the first-stage rotary kiln 4, and the lump coal The pyrolysis temperature in the first-stage rotary kiln 4 is 600∽900 degrees Celsius, the pyrolysis pressure is -0.3Kpa∽-0.45Kpa, and the pyrolysis time is 100∽150 minutes.

[0028] During the rotation process of the rotary kiln 4, the lump coal is constantly turned and moved towards the kiln head, and at the same time, it is in contact with the hot air flow generated by the combustion to carry out the thermal decomposition process of the coal; The co...

Embodiment 2

[0032] Send raw material lump coal with a grain size of 6 to 40 mm to the first-stage rotary kiln 4 through the belt conveyor 1, sieve 2, and storage hopper 3 for dry distillation and pyrolysis. The pyrolysis temperature in the first-stage rotary kiln 4 is 800 degrees Celsius, and the pyrolysis pressure is -0.4 Kpa, the pyrolysis time is 120 minutes, using the internal heat heating method; blower 5 secondary air supply, dry and pyrolyze the lump coal, the pyrolysis charcoal produced after coal pyrolysis enters the second stage rotary kiln (rotary coke quenching device), using the internal spraying method to cool the pyrolytic carbon, spray water to quench the coke, the cooling temperature is 70 degrees Celsius, and the cooling time is 50 minutes, and then the pyrolytic carbon is sieved through the pyrolytic carbon sieve 7 according to the product requirements, different Grain-sized products are stacked in the coke field to provide high-quality injection materials for blast furn...

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 new process of producing pyrolytic carbon in metallurgy industry includes the following steps: dry distilling sieved coal to pyrolyze in the first section of a rotary kiln with twice blasting with blowers, cooling the pyrolytic carbon in the second section of the rotary kiln, sieving to obtain pyrolytic carbon pellet applied as the blown material for blast furnace, burning the pyrolysis generated coal gas in a second burning furnace to burn out harmful gas, and utilizing the burnt gas to produce steam in a afterheat boiler and generate electricity in a steam turbine. The present invention has advanced technological process, environment friendship, reasonable utilization of resource and other advantages.

Description

technical field [0001] The invention relates to the technical field of coking and producing pyrolytic carbon in the metallurgical industry, in particular to a two-stage rotary kiln pyrolytic carbon production technology, and uses pyrolytic charcoal instead of coal to provide high-quality injection raw materials for blast furnaces, which can relieve blast furnace blowouts. Blowing the increasingly tight supply of high-quality coal. Background technique [0002] With the rapid increase of coking production capacity, the supply of coking coal tends to be tight. In order to alleviate this contradiction and reduce the amount of coke used in blast furnaces, pulverized coal injection technology in blast furnaces has been developed rapidly. Pulverized coal injection in blast furnaces is the main measure to save coke and reduce production costs in blast furnaces, and it can also improve the energy structure of the iron and steel industry. Vigorously promoting and developing blast fu...

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
IPC IPC(8): C10B47/30
Inventor 胡军杨文彪陈亚飞杜名华
Owner 梁尚彧