Lignite drying system and lignite drying method

A technology of drying system and drying method, which is applied in the direction of drying solid materials, drying gas arrangement, heating to dry solid materials, etc., can solve the problems of low drying efficiency, volatile matter precipitation, and high volatile matter of lignite, so as to avoid oversaturation and reduce Oxygen content, effect of preventing overdrying

Inactive Publication Date: 2013-06-05
QINHUANGDAO QINYE HEAVY IND
View PDF16 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the high volatile content and low ignition point of lignite, when using traditional high-temperature drying methods to dry lignite, there are problems such as volatile precipitat

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
  • Lignite drying system and lignite drying method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

[0037] Such as figure 1 As shown, the lignite drying system of the embodiment of the present invention is used to dry lignite materials with a particle size range below 50mm, including a hot air system, a vibrating fluidized bed dryer 3, a nitrogen system and a dust removal system, wherein the hot air The system includes a flue gas generator 1. The flue gas generator 1 has a combustion chamber and an air mixing chamber. The high temperature flue gas generated by the combustion chamber is fully mixed with the air entering from the air duct 2 in the air mixing chamber to form working flue gas. , the working flue gas enters the vibrating fluidized bed dryer 3 under the action of the blower through the air inlet pipe to dry the coal material, and the flue gas generator 1 communicates with ...

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 discloses a lignite drying system and a lignite drying method. The lignite drying system comprises a hot air system, a vibrating fluidized bed dryer, a nitrogen system and a dust removal system, wherein the hot air system is used for injecting work flue gas into the vibrating fluidized bed dryer through a gas inlet pipeline for drying lignite materials, the vibrating fluidized bed dryer is connected with the dust removal system through a gas outlet pipeline, and the nitrogen system is used for injecting nitrogen into the vibrating fluidized bed dryer. According to the lignite drying method, the lignite materials are evenly distributed on a bed surface of the vibrating fluidized bed dryer; the work flue gas at the temperature of 240-320 DEG C and with less than 14% of oxygen content is injected through the bottom of the vibrating fluidized bed dryer; under the combined action of exciting force and the buoyancy of the work flue gas, the lignite materials move towards the rear portion of the vibrating fluidized bed dryer in a fluidized state; and the lignite materials quickly exchange heat with the work flue gas for dehydration and then are discharged through a discharge end of the vibrating fluidized bed dryer. The lignite drying system and the lignite drying method can be used for drying the lignite materials quickly and effectively, and can guarantee safety in the drying process.

Description

technical field [0001] The invention relates to the field of material drying, in particular to a lignite drying system and drying method. Background technique [0002] Lignite is a low-rank coal with high moisture and volatile content and low calorific value. With the increasing demand for energy, lignite mining shows a rapid growth trend. However, due to its low calorific value, the application of lignite is severely restricted. The market urgently needs to develop advanced and practical technologies to improve the quality of lignite raw coal and increase the economic value of lignite. [0003] At present, it is recognized that there are mainly two types of lignite upgrading methods: physical upgrading and chemical upgrading. Physical upgrading is to use various drying equipment to reduce the moisture content of lignite; chemical upgrading is mainly to use dry distillation process to process lignite into semi-coke and tar. The two types of upgrading processes that have ...

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): F26B3/092F26B21/14F26B25/00C10J3/20
Inventor 王伟峰邢卫平礼宾孔祥伟原培新蒲广峡高荣王建华王楠项纯隆高广鹏田继明张金茹吴东军
Owner QINHUANGDAO QINYE HEAVY IND
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