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

A treatment process combining sludge drying and gasification

A technology for sludge drying and treatment process, which is applied in dehydration/drying/concentrated sludge treatment, fixed bed gasification, petroleum industry, etc. It can solve the problems of not forming a unified idea and achieve environmental friendliness and simple process Effect

Active Publication Date: 2014-10-29
DALIAN HUANZI TECH
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

my country's dewatered sludge treatment and resource utilization technology still has not formed a unified idea

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
  • A treatment process combining sludge drying and gasification
  • A treatment process combining sludge drying and gasification
  • A treatment process combining sludge drying and gasification

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] Refer to attached figure 1 , the combined treatment process of sludge drying and gasification includes the following steps:

[0019] (1) The dewatered sludge with a moisture content of 85-90% from the sewage treatment plant is transported to the plant by tanker, and the sludge is pumped into the sludge receiving bin, and a hydraulic movable carriage is installed at the bottom of the bin to prevent the sludge from being discharged The area is bridged. After the sludge in the warehouse is pressurized by the positive pressure feeder, it is fed to the hydraulic plunger pump, and the odor in the warehouse is collected to the odor treatment system; Dry working environment: fully enclosed, micro negative pressure (500-1000Pa); working temperature range: parts in contact with materials: 180-220°C, exposed parts: 70-120°C; temperature range of hot air: 50-80°C; the heating medium is high-temperature heat transfer oil at 210-240°C. The hot steam evaporated from step (1) is conc...

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 relates to a treatment process for dewatered sludge. A sludge drying and gasifying combined treatment process comprises the following steps that: (1) dewatered sludge with a moisture content of 85-90% is subjected to indirect drying by using a rotary drum type pressed film dryer, after the moisture content of the dewatered sludge is reduced to 20%, separated heat steam is subjected to heat exchange, condensate water enters a sewage treatment system, and a gas component enters a biological deodorization device to deodorize; (2) dry sludge subjected to drying is conveyed to a gasifier to gasify, thereby generating a gasified gas; (3) the gasified gas is purified and then cooled, heated air as a preheating heat source for auxiliary gasification enters the gasifier; and (4) the cooled gasified gas is buffered by using a gas holder, and then conveyed to a heat-conducting oil boiler to burn, heated heat-conducing oil is used as a drying heat source, and gasification residues are used for making bricks. According to the invention, by using the self calorific value of sludge, an effect of energy self-supply is achieved without relying on or being less reliant on external energy, and finally, the reduction, recycling and harmlessness of sludge are realized, therefore, the treatment process is an advanced comprehensive utilization process for sludge, and has a broad application prospect.

Description

technical field [0001] The invention relates to a treatment process of dewatered sludge, which belongs to the sludge treatment technology, in particular to a treatment process combining sludge drying and gasification. Background technique [0002] With the development of my country's social economy and urbanization, the number of sewage treatment plants has increased, and the output of sludge has also increased significantly. The moisture content of sludge produced by sewage treatment plants is still above 80% after initial concentration, and contains a large amount of pollutants. Sludge treatment is an environmental problem that needs to be solved urgently in our country. [0003] At present, there are three main methods of sludge disposal: landfill, land use, and incineration. Landfill is a traditional sludge treatment method. Due to secondary pollution and the limited places suitable for sludge landfill, the application of sludge landfill has been limited. Land use main...

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 Patents(China)
IPC IPC(8): C02F11/12C10J3/06C10J3/86
CPCY02P20/129
Inventor 邹欣洺李爱民张赜周立杰姜秀玲
Owner DALIAN HUANZI TECH
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