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

Method for producing liquefied natural gas by automatically supplementing carbon by using retort gas as raw material

A technology for liquefied natural gas and dry distillation gas, which is applied in the direction of gas fuel, combustible gas purification, combustible gas purification/transformation, etc., can solve the problems of complex process, difficult coal dry distillation enterprise promotion, large one-time investment, etc., to achieve simple process, Improvement of environmental quality and low investment in equipment

Active Publication Date: 2014-06-25
太原科瑞康洁净能源有限公司
View PDF3 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The above-mentioned existing technologies are complicated in process and large in one-time investment, so it is difficult to popularize them in coal dry distillation enterprises in my country

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
  • Method for producing liquefied natural gas by automatically supplementing carbon by using retort gas as raw material
  • Method for producing liquefied natural gas by automatically supplementing carbon by using retort gas as raw material
  • Method for producing liquefied natural gas by automatically supplementing carbon by using retort gas as raw material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0098] Limestone ore composition (wt%): CaO 54.3%, burning loss rate 42.7%, impurity 3.0%.

[0099] The furnace coal is composed of 30% lean coal, 35% 1 / 3 coking coal, 20% fat coal and 15% main coking coal; its quality index (wt%): V adf 30.0%, A d 13.5%, FC d 60.6%, S t,d 0.67%, cohesion index G=74, fineness (≤3mm)=73.6%.

[0100] The coal into the furnace was tested in a 40kg small coke oven (the furnace charge was isolated from the air and continuously heated for 24 hours, the temperature of the center of the furnace charge reached 1100°C before being released from the furnace, and it was cooled to room temperature after coke quenching): the gas production rate of the furnace charge was 353.4 Nm 3 / t; In dry distillation gas before adding carbonate carbon replenishing raw materials: H 2 60.1%, CH 4 22.8%, CO6.8%, CO 2 2.3%, the rest is N 2 、C m h n , O 2 Wait. CO 2 The conversion ratio is calculated as 0.60, and the hydrogen-to-carbon ratio is calculated as 3.0...

Embodiment 2

[0113] Dolomite ore composition (wt%): CaO 30.4%, MgO 21.7%, burning loss rate 47.4%, impurity 0.46%.

[0114] The furnace coal is composed of 30% lean coal, 35% 1 / 3 coking coal, 20% fat coal and 15% main coking coal; its quality index (wt%): V adf 30.0%, A d 13.5%, FC d 60.6%, S t,d 0.67%, cohesion index G=74, fineness (≤3mm)=73.6%.

[0115] The coal into the furnace was tested in a 40kg small coke oven (the charge was continuously heated for 20 hours without air, and the center temperature of the charge reached 1050°C before being released from the furnace, and it was cooled to room temperature after coke quenching): the gas production rate of the charge into the furnace was 353.4 Nm 3 / t; In dry distillation gas before adding carbonate carbon replenishing raw materials: H 2 57.5%, CH 4 24.5%, CO7.5%, CO 2 2.8%, the rest is N 2 、C m h n , O 2 Wait. CO 2 The conversion ratio is calculated as 0.55, and the hydrogen-to-carbon ratio is calculated as 3.20. According ...

Embodiment 3

[0128] Siderite composition (wt%): FeO 52.7%, burning loss rate 26.3%, impurity 21.0%.

[0129] The furnace coal is composed of 30% lean coal, 35% 1 / 3 coking coal, 20% fat coal and 15% main coking coal; its quality index (wt%): V adf 30.0%, A d 13.5%, FC d 60.6%, S t,d 0.67%, cohesion index G=74, fineness (≤3mm)=73.6%.

[0130] The coal into the furnace was tested in a 40kg small coke oven (the charge was continuously heated for 15 hours in isolation from the air, the center temperature of the charge reached 950°C before being released from the furnace, and it was cooled to normal temperature after coke quenching): the gas production rate of the charge into the furnace was 353.4 Nm 3 / t; In dry distillation gas before adding carbonate carbon replenishing raw materials: H 2 54.5%, CH 4 25.5%, CO10.7%, CO 2 3.7%, the rest is N 2 、C m h n , O 2 Wait. CO 2 The conversion ratio is calculated as 0.55, and the hydrogen-to-carbon ratio is calculated as 3.10. According to ...

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

PropertyMeasurementUnit
cohesion indexaaaaaaaaaa
cohesion indexaaaaaaaaaa
cohesion indexaaaaaaaaaa
Login to View More

Abstract

The invention relates to a method for producing liquefied natural gas by automatically supplementing carbon by using retort gas as a raw material, which comprises the following steps: adding carbonate carbon supplementing raw powder into coal, mixing, putting into a retort, heating, cooling for coke quenching, screening to obtain a solid clean fuel, directly sending generated CO2 and CO gases into retort gas to be matched with surplus H2 gas, carrying out chemical recovery and deep purification on the spilled retort gas to obtain methane synthetic gas, carrying out methanation to obtain crude synthetic natural gas, carrying out decarbonization, drying and purification to obtain purified synthetic natural gas, and liquefying by copious cooling to obtain the liquefied natural gas. The carbonate mineral is directly added into the coal for the retort, and the CO2 and CO gases generated by thermal decomposition are used as retort gas to supplement carbon; and thus, the method has the characteristics of abundant raw material sources, simple technical process, equipment investment saving, low carbon supplementing cost, favorable economical efficiency and the like, and can be widely used in comprehensive utilization projects of high / medium-temperature retort gas.

Description

technical field [0001] The invention relates to a method for producing liquefied natural gas, and furthermore, the method for producing liquefied natural gas is realized by supplementing carbon by using retort coal gas as a raw material. Background technique [0002] Natural gas is a high-quality, efficient, clean and low-carbon energy. At present, natural gas accounts for 4.6% of my country's primary energy consumption, which is far behind the international average (23.8%). In 2010, my country's natural gas consumption was 107.5 billion Nm 3 , foreign dependence has exceeded 15%, and will reach 230 billion Nm by 2015 3 , foreign dependence exceeds 35%. Therefore, accelerating the development of the natural gas industry and increasing the proportion of natural gas in primary energy consumption is of great strategic significance to my country's adjustment of energy structure, improvement of people's living standards, promotion of energy conservation and emission reduction,...

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): C10L3/08C10L3/10C10B57/06C10B57/14C10B57/16C10K1/00
Inventor 杜文广刘守军张智聪上官炬杨颂
Owner 太原科瑞康洁净能源有限公司
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