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

Coal dry distillation technology employing indirect heat exchange

A coal dry distillation and indirect technology, which is applied in the field of coal dry distillation, can solve the problems that small particle size coal dry distillation and carbonization cannot be applied, and achieve the effects of increasing calorific value, reducing environmental pollution, and increasing tar yield

Active Publication Date: 2014-11-05
BEIJING GUODIAN FUTONG SCI & TECH DEV
View PDF8 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is that the external-combustion and internal-heating coal carbonization furnace in the prior art is not suitable for dry distillation and carbonization of coal with small particle size, so an indirect heat exchange furnace suitable for lump coal and coal with small particle size is proposed Coal dry distillation process

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
  • Coal dry distillation technology employing indirect heat exchange

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] In this embodiment, the carbonization furnace used in the coal carbonization process for indirect heat exchange has a structure including: furnace top coal bunker 1, drying section 2, carbonization section 3, cooling section and unloading device, a slide valve is set between the top coal bunker 1 and the drying section 2; wherein the dry distillation section 3 is provided with a combustion chamber and a carbonization chamber, and the combustion chamber is located at the periphery of the carbonization chamber and surrounds all The carbonization chamber is set up, the dried coal enters the carbonization chamber for pyrolysis, and a raw coal gas pipeline is connected to the carbonization chamber, and a first spray device 7 and a cyclone dust collector are sequentially arranged on the raw coal gas pipeline. , direct cooling scrubber, indirect cross cooler 8, mist catcher, electric tar catcher 9 and gas pressurizer 10; the described crude gas pipeline positioned at the downst...

Embodiment 2

[0043] The dry distillation furnace used for the coal dry distillation process of indirect heat exchange in this embodiment is as follows: figure 1 As shown, its structure includes: a top coal bunker 1, a drying section 2, a dry distillation section 3, a cooling section, and a discharger arranged sequentially from top to bottom, between the top coal bunker 1 and the drying section 2 A slide valve is arranged between them, wherein the dry distillation section 3 is provided with a combustion chamber and a carbonization chamber, the combustion chamber is located on the periphery of the carbonization chamber and is arranged around the carbonization chamber, and the dried coal enters the carbonization chamber for Pyrolysis;

[0044] In the carbonization furnace described in this embodiment, a gas collection device is also provided in the carbonization chamber, and the gas collection device includes: multi-layer main pipes, branch pipes and multiple risers; wherein each layer of 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

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
Login to View More

Abstract

The invention provides a coal dry distillation technology employing indirect heat exchange. Glue gas subjected to heat exchange at a dry distillation stage is employed for direct heat exchange on raw coal at a drying stage, so that dewatering drying is realized. Then at the dry distillation stage, combustion of coal gas and air is realized and a high-temperature flue gas of 800-1200 DEG C is generated, and the high-temperature flue gas is used to perform indirect heat exchange on coal. After the dry distillation step is finished, cooling of semicoke employs direct spraying cooling at the upper part combined with indirect water cooling at the lower part, and indirect water cooling gives play to main effect, so that semicoke with relatively high quality is relatively easily obtained, and also no wastewater discharge is generated, water source is saved and environmental pollution is reduced. The coal dry distillation technology employing indirect heat exchange helps to improve the calorific value of coal gas, reduce the dust content in the coal gas and improve the tar yield, the prepared semicoke is high in quality, and the technology is applicable to both dry distillation of lump coal and small-granularity coal.

Description

technical field [0001] The invention relates to an indirect heat exchange coal dry distillation process, which belongs to the technical field of coal dry distillation. Background technique [0002] Dry distillation is a reaction process in which solid or organic matter is heated and decomposed in the absence of air. The result of dry distillation is to generate various gases, steam and solid residues, and the mixture of gas and steam is divided into gas and liquid after cooling. Coal dry distillation is one of the important methods for chemical processing of coal. After coal dry distillation, the composition and aggregation state of the raw materials will change. The product contains solid, gaseous and liquid substances, and semi-coke, coal tar and Coke oven gas. [0003] Dry distillation production mostly adopts intermittent operation, but the dry distillation device can vary depending on the type of raw material and purpose, and can generally be divided into two types: e...

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): C10B53/04C10B47/00C10B57/10C10B57/18
Inventor 石长江刘振强钟根元苗文华张培林刘盼杨生智张旭辉
Owner BEIJING GUODIAN FUTONG SCI & TECH DEV
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