Process for coproducing liquefied natural gas (LNG) and synthetic ammonia

A technology for liquefied natural gas and synthetic ammonia, applied in the field of coal chemical industry, can solve the problems of not obtaining liquefied natural gas and low utilization rate of hydrogen treatment, and achieve the effect of saving energy and simplifying the process

Active Publication Date: 2012-07-04
CHANGZHENG ENG
View PDF9 Cites 32 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Invention patent CN1036375A records a process for preparing synthetic natural gas from coal. This process is to obtain coal gas obtained by hydrogenation treatment. After purification, conversion, and methanation, it undergoes cryogenic separation to obtain synthetic natural gas and hydrogen. The hydrogen is used for coal Hydrogenati

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
  • Process for coproducing liquefied natural gas (LNG) and synthetic ammonia
  • Process for coproducing liquefied natural gas (LNG) and synthetic ammonia

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0063] Reference attached figure 1 and 2 , the high-temperature crude gas produced by pressurized gasification of coal powder as raw material, adjust the conversion rate of CO conversion unit according to the output of downstream products to synthetic ammonia and liquid methane, for 12000Nm 3 / h natural gas and 500 tons / day synthetic ammonia cogeneration unit can be realized by two-stage wide temperature and sulfur resistance conversion. The loading amount and loading scheme of the conversion catalyst can be adjusted accordingly according to the product scheme.

[0064] The crude gas from gasification passes through the heat exchanger (E-2001) after the steam is produced by the waste heat boiler (E-2005) at the outlet of the first-stage converter, and then it is divided into 40-60% (it can be adjusted according to the production ratio) The crude gas enters the first-stage shift furnace (R-2001), and the CO is converted to 20-40% (v / v). After heat exchange with the crude gas ...

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 belongs to the technical field of coal chemical industry and particularly relates to a process for coproducing gasified synthetic ammonia and liquefied natural gas (LNG). The invention provides a method and equipment for coproducing the LNG and the synthetic ammonia by using raw coal gas generated by a high-temperature entrained bed; the desulphurization and the decarbonization are carried out by using a mature and advanced physical and chemical absorption process, methane is obtained by using an advanced methanation conversion technology, then, a deep cooling technology is adopted to produce liquid methane and hydrogen through staged cooling and washing separation, the produced liquid methane is outputted as a product, i.e. the LNG, meanwhile, the produced hydrogen is mixed with nitrogen to form a synthetic gas, and the synthetic gas is conveyed to an ammonia synthesizer for the production of the synthetic ammonia after the cold energy is recovered. The coproduction of natural gas and liquid ammonia is achieved, the equipment has corresponding capability for load adjustment, and the emission of vent gas in synthesis is not needed, so that the raw coal gas is maximally used in the production of products.

Description

technical field [0001] The invention belongs to the technical field of coal chemical industry. In particular, it relates to a joint production process of coal gasification to synthesize ammonia and liquefied natural gas. Background technique [0002] As a clean energy source, natural gas is the preferred fuel for residents' daily life. As the country's demand for energy continues to grow, LNG products will play an important role in optimizing China's energy structure, effectively solving the dual problems of energy supply security and ecological environment protection, and achieving sustainable economic and social development. As one of the main downstream users of natural gas, urban gas users have very large fluctuations in gas load, and face the pressure of peak-shaving of gas sources every day. Therefore, all urban gas companies need to invest huge sums of money to build some peak-shaving facilities. This patented technology satisfies the advantages of flexible adjustm...

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): C10L3/08C10L3/10C01C1/04
CPCF25J3/0219F25J3/0233F25J3/0276F25J2205/30F25J2210/20F25J2210/42F25J2215/04F25J2245/42F25J2270/12F25J2270/18F25J2270/66Y02P20/10Y02P20/129
Inventor 赵辉韩勇罗丹雨朱玉营姜从斌
Owner CHANGZHENG ENG
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