System and process for drying sludge using pulse combustion internal heating fluid bed

A fluidized bed drying and fluidized bed dryer technology, applied in dewatering/drying/concentrating sludge treatment, chemical instruments and methods, dispersed particle separation, etc., can solve the problem of long drying time, large energy consumption, and large heat loss and other problems, to achieve the effect of no dust combustion and explosion hazards, improved drying efficiency, and low environmental protection pressure

Active Publication Date: 2012-09-26
SHANDONG TIANLI DRYING TECH & EQUIP
View PDF9 Cites 21 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its advantages are simple process flow, large single-machine processing capacity, and easy industrialization. The disadvantages are that the production equipment is huge, covers a large area, and takes a long time to dry. Large, the whole drying process is less economical
Its advantages are high drying efficiency, no danger of explosion and fire, small tail gas emissions, low operating costs, and good economics in the entire drying process. The disadvantages are

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
  • System and process for drying sludge using pulse combustion internal heating fluid bed
  • System and process for drying sludge using pulse combustion internal heating fluid bed

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0036] The present invention will be further described below in conjunction with the drawings and embodiments.

[0037] figure 1 In, a pulsating combustion internally heated fluidized bed drying system for sludge, the exhaust pipe of the pulsating burner 3 is connected to the air inlet of the internally heated fluidized bed dryer 4, and the internally heated fluidized bed dryer 4 is connected to the wet sludge. The material granulation device and the cyclone dust collector 5 are connected separately; steam (superheated steam or saturated steam) enters the internal heat exchanger and the wet sludge after heat exchange through the steam inlet of the heat exchanger in the internal heating fluidized bed dryer 4 Return to the boiler; the air outlet of the internally heated fluidized bed dryer 4 is connected to the cyclone 5 and the electric precipitator 6 in sequence, and the exhaust gas after dust removal is mixed with the exhaust gas of the pulse burner 3 through the circulating fan...

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 system for drying sludge using a pulse combustion internal heating fluid bed. The system comprises a pulse combustor, a wet sludge feeding granulating device, an internal heating fluid bed drier, a dust removing device and a deodorizing device. The invention also discloses a corresponding process for drying the sludge using the pulse combustion internal heating fluid bed. According to the invention, the process that the pulse combustion is combined with the heating fluid bed is adopted for sludge drying, so that the drying intensity is improved, the energy consumption is reduced, the treatment quantity of waste gas is reduced, and meanwhile the oxygen content of the system is reduced; dust combustion and explosion danger are prevented; and the system and the process are safe and reliable.

Description

technical field [0001] The invention relates to a pulsating combustion internal heating fluidized bed system and process for sludge drying. Background technique [0002] Sludge is produced in a large amount, is unstable, has a foul smell, and contains toxic and harmful substances such as pathogenic microorganisms. If it enters the environment without proper treatment, it will cause secondary pollution to water bodies and the atmosphere. Therefore, the purpose of sludge treatment and disposal and the guiding principles to be followed are "reduction, stabilization, harmlessness and recycling". To achieve the "four modernizations" required above, removing moisture is the key. After the traditional concentration and dehydration process, the moisture content of the sludge cannot reach below 60%, and the moisture content of the economical mechanical dewatering cake is about 75%. In order to achieve the deep dehydration of sludge, it is necessary to introduce the drying technolog...

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): C02F11/12B01D50/00
Inventor 赵改菊尹凤交李选友张宗宇李捷王成运
Owner SHANDONG TIANLI DRYING TECH & EQUIP
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