CN109534653A - A kind of front end sludge drying system in solid waste Thermal desorption accumulation of heat burning disposal - Google Patents
A kind of front end sludge drying system in solid waste Thermal desorption accumulation of heat burning disposal Download PDFInfo
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- CN109534653A CN109534653A CN201811636850.5A CN201811636850A CN109534653A CN 109534653 A CN109534653 A CN 109534653A CN 201811636850 A CN201811636850 A CN 201811636850A CN 109534653 A CN109534653 A CN 109534653A
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- flue gas
- solid waste
- sludge
- heat
- thermal desorption
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment Of Sludge (AREA)
Abstract
The present invention proposes the front end sludge drying system in a kind of solid waste Thermal desorption accumulation of heat burning disposal, including high-temperature flue gas extraction and transportation system, flue gas drying and ignition system, control system, pass through the high-temperature flue gas for generating the corollary apparatus dual firing chamber of solid waste Thermal desorption accumulation of heat incineration system, it is directly used in the front end sludge of desiccation solid waste Thermal desorption accumulation of heat incineration system disposition, while playing ignition action.The system is in such a way that high-temperature flue gas directly heats dewatered sludge, system thermal efficiency is substantially increased, and carries out sludge incineration igniting using high-temperature flue gas, the process section gas consumption can be saved, to reduce energy consumption, while decreasing the discharge amount to carbon dioxide in atmosphere.
Description
Technical field
The present invention relates to field of solid waste treating technology, and in particular to the incineration treatment technology of sludge.
Background technique
The method that the process route of traditional sludge burning disposal generallys use " semi-oriented+to burn ", it may be assumed that sewage treatment plant
Dewatered sludge enters warehouse of sludge, and the moisture content of sludge is 80% or so；Sludge drier is sent by conveying mechanism to carry out
Semi-oriented processing, it is semi-oriented after moisture percentage in sewage sludge 55% or so；Sludge after desiccation enters fluidized bed incinerator and is fired
It burns, ignition temperature is at 850 DEG C or more；The high-temp waste gas generated after burning enters air heat exchanger, by heat exchanger to fluidized bed
The combustion air of incinerator is heated, and the air after heating enters fluidized bed as combustion air；What is come out from heat exchanger is useless
Gas enters waste heat boiler, enters sludge drier as heat source by the high-temperature steam that waste heat boiler generates and sludge is dried；
The exhaust gas that temperature reduces enters dry type reactor, bag filter, scrubbing tower etc. and carries out vent gas treatment；By waste heat boiler and cloth bag
The flying dust that deduster is collected enters flying dust collection system.
The sludge treatment process route of above-mentioned " semi-oriented+to burn ", is using by waste heat pot in the sludge semi-dry stage
The high-temperature steam that furnace generates enters sludge drier as heat source and sludge is dried.Using the side of this indirect heating desiccation
Formula can effectively reduce the yield of tail end flue gas and the disposition difficulty of flue gas.But there is also indirect heating manner heat exchange efficiency is low
The problem of, cause the amount of heat in flue gas not obtain abundant effective recycling, to cause the indirect increase of operating cost.
Sludge semi-dry system process setting simultaneously is complicated, therefore operation expense is higher.
Summary of the invention
The present invention is in view of the deficienciess of the prior art, propose that the front end in a kind of solid waste Thermal desorption accumulation of heat burning disposal is dirty
Mud drying method carries out direct-fired mode using the high-temperature flue gas of system itself and carries out drying and other treatment to front end sludge, from
And the mesh for the discharge amount for reaching the energy consumption for reducing total system, while largely reducing flue gas, dust, flying dust and carbon dioxide etc.
's.
Technical scheme is as follows:
A kind of front end sludge drying system in solid waste Thermal desorption accumulation of heat burning disposal, the system burn solid waste Thermal desorption accumulation of heat
The high-temperature flue gas that the corollary apparatus dual firing chamber of burning system generates is directly used in the disposition of desiccation solid waste Thermal desorption accumulation of heat incineration system
Front end sludge, while playing ignition action；Including high-temperature flue gas extraction and transportation system, flue gas drying and ignition system, control
System.
The high-temperature flue gas is drawn and transportation system, and the corollary apparatus dual firing chamber of solid waste Thermal desorption accumulation of heat incineration system is burnt
The high-temperature flue gas generated after burning, draws from dual firing chamber, and part of smoke leads to solid waste by flow control valve and frequency converting induced draft fan
The preheating igniting part of Thermal desorption accumulation of heat incineration system front end, it is (such as original to unclassified stores that remainder flue gas enters heat exchanger
Flue gas) it is heated.
The flue gas drying and ignition system, draw high-temperature flue gas and transportation system conveys the high-temperature flue gas come in solid waste
The preheating igniting part of Thermal desorption accumulation of heat incineration system front end, is dried and is played igniting to the sludge of its mixed accessories.
The control system, by moisture content to mixed material sludge, the comprehensive calorific value of material, dual firing chamber's flue gas flow,
The detection of the supplemental characteristics such as flue-gas temperature by comprehensive comparison, is analyzed, best drying flue gas flow is calculated and solid waste is pyrolyzed
The speed of service of accumulation of heat incineration system is analysed, and completes corresponding flue gas flow and system operational speed by controlling related executing agency
Regulation, the drying effect and ignition results that are finally reached the sludge of front end mixed accessories meet the requirement of relevant design technique.
Further, the flue gas drying and ignition system carry out the design of spiral cloth wind to high-temperature flue gas, while using high temperature
Flue gas and low-temperature mixed material sludge carry out counterflow heat exchange, drying, and light material eventually by high-temperature flue gas, play igniting
Effect.
Further, the spiral cloth wind design is that flue gas is arranged on smoke path in preheating igniting part to disperse baffle,
Flue gas is avoided directly to rush at charge level.
Further, the flue gas after drying, igniting leads to next stage burning zone by negative-pressure air fan and participates in burning.
In the present invention, the front end sludge refers to pure sludge or is mixed with the sludge of auxiliary material, and auxiliary material is chaff shell, crushing straw etc.
Facilitate the material of burning.
In the present invention, the high-temperature flue-gas is about 400-850 DEG C.
The present invention uses the high-temperature flue gas for generating the corollary apparatus dual firing chamber of solid waste Thermal desorption accumulation of heat incineration system, directly
For the front end sludge of desiccation solid waste Thermal desorption accumulation of heat incineration system disposition, while ignition action is played, has the advantage that embodiment
It is as follows:
1, the high-temperature flue gas that dual firing chamber generates is directly used in desiccation front end mixture sludge, and for lighting a fire.Therefore can largely subtract
Few tail end smoke discharge amount, while the discharge amount for corresponding to dust, flying dust, nitrogen oxides and sulfide is also accordingly reduced.
2, the high-temperature flue gas that dual firing chamber generates is directly used in desiccation front end mixture sludge, and for lighting a fire.Therefore it can save
The consumption of ignition section fuel is saved, while front end increases stoving process section, the moisture content of material can be reduced, improves calorific value, thus
Reach the function that disposed of in its entirety system energy consumption is effectively reduced.
3, the high-temperature flue gas for generating dual firing chamber, is directly used in desiccation front end mixture sludge, indirect dirt similar with other
Mud anhydration system compares, and has many advantages, such as that the desiccation thermal efficiency is higher, operating system is simpler, reliable.
As it can be seen that process system proposed by the present invention can effectively improve the total system thermal efficiency, and reduced simultaneously in atmosphere
The discharge amount of carbon dioxide, dust and flying dust etc..Therefore the technology can be widelyd popularize in similar incineration disposal technique, so as to
The discharge amount of flue gas is reduced, while improving the thermal efficiency of total system.
Detailed description of the invention
Fig. 1 is system structure diagram of the invention.
Specific embodiment
Below in conjunction with attached drawing the present invention will be described in detail content.
Referring to Fig. 1, process system proposed by the present invention is drawn by high-temperature flue gas and transportation system, flue gas drying and igniting are
System, intelligence control system three parts composition.The system is used the corollary apparatus dual firing chamber of solid waste Thermal desorption accumulation of heat incineration system
The high-temperature flue gas of generation, is directly used in the front end sludge of desiccation solid waste Thermal desorption accumulation of heat incineration system disposition, while playing igniting
Effect.Wherein,
High-temperature flue gas is drawn and transportation system: what the corollary apparatus dual firing chamber of solid waste Thermal desorption accumulation of heat incineration system generated after burning
High-temperature flue-gas is about 850 DEG C, and from dual firing chamber's Base top contact, part of smoke is drawn by flow control valve and frequency converting induced draft fan
To the preheating igniting part of solid waste Thermal desorption accumulation of heat incineration system front end, work that the sludge of its mixed accessories is dried and lighted a fire
With remainder flue gas enters heat exchanger and heats to raw flue gas.
Flue gas drying and ignition system: leading to solid waste Thermal desorption accumulation of heat incineration system front end for dual firing chamber's high-temperature flue gas, right
Igniting is dried and played the role of to the sludge of its mixed accessories.The part system be by high-temperature flue gas carry out rationally,
Optimization spiral cloth wind design (using flue gas disperse baffle, avoid flue gas from directly rushing at charge level), at the same using high-temperature flue gas with
Low-temperature mixed material sludge carries out counterflow heat exchange, drying, and lights material eventually by high-temperature flue gas, plays the work of igniting
With.It is designed using the uniqueness cloth wind, is greatly improved the efficiency of heating- utilization of flue gas.Flue gas after drying UTILIZATION OF VESIDUAL HEAT IN passes through negative
Pressure fan leads to next stage burning zone and participates in burning, therefore can reduce tail end smoke discharge amount.
Control system: pass through moisture content, the material comprehensive calorific value, dual firing chamber's flue gas flow, flue gas to mixed material sludge
The detection of the supplemental characteristics such as temperature by comprehensive comparison, is analyzed, best drying flue gas flow is calculated and solid waste Thermal desorption stores
The speed of service of thermal incineration system, and the tune by controlling related executing agency's completion corresponding flue gas flow and system operational speed
Control.The drying effect and ignition results that are finally reached front end mixture sludge meet the requirement of relevant design technique.
System above is directly used in the sludge of Thermal desorption accumulation of heat incineration system disposition by the high-temperature flue gas that dual firing chamber generates
Front end carries out drying igniting, so that the energy consumption of total system be effectively reduced, while substantially reduce again flue gas, dust, flying dust and
The discharge amount of carbon dioxide etc..
Claims (6)
1. the front end sludge drying system in a kind of solid waste Thermal desorption accumulation of heat burning disposal, which is characterized in that the system will be consolidated
Waste heat parses the high-temperature flue gas that the corollary apparatus dual firing chamber of accumulation of heat incineration system generates, and is directly used in desiccation solid waste Thermal desorption accumulation of heat
The front end sludge of incineration system disposition, while playing ignition action；Including high-temperature flue gas draw and transportation system, flue gas drying and
Ignition system, control system；
The high-temperature flue gas is drawn and transportation system, after the corollary apparatus dual firing chamber of solid waste Thermal desorption accumulation of heat incineration system is burned
The high-temperature flue gas of generation is drawn from dual firing chamber, and part of smoke leads to solid waste by flow control valve and frequency converting induced draft fan and is pyrolyzed
Analyse the preheating igniting part of accumulation of heat incineration system front end；
The flue gas drying and ignition system, draw high-temperature flue gas and transportation system conveys the high-temperature flue gas come and is pyrolyzed in solid waste
The drying and lighting section for analysing accumulation of heat incineration system front end, are dried and are played igniting to front end sludge；
The control system passes through moisture content, the material comprehensive calorific value, dual firing chamber's flue gas flow, flue gas to mixed material sludge
The detection of the supplemental characteristics such as temperature by comprehensive comparison, is analyzed, best drying flue gas flow is calculated and solid waste Thermal desorption stores
The speed of service of thermal incineration system, and the tune by controlling related executing agency's completion corresponding flue gas flow and system operational speed
Control, the drying effect and ignition results that are finally reached front end sludge meet the requirement of relevant design technique.
2. the front end sludge drying system in solid waste Thermal desorption accumulation of heat burning disposal according to claim 1, feature exist
In the flue gas drying and ignition system carry out the design of spiral cloth wind to high-temperature flue gas, while before use high-temperature flue gas and low temperature
It holds sludge to carry out counterflow heat exchange, drying, and lights material eventually by high-temperature flue gas, play the role of igniting.
3. the front end sludge drying system in solid waste Thermal desorption accumulation of heat burning disposal according to claim 2, feature exist
In the spiral cloth wind design is that flue gas is arranged on smoke path in preheating igniting part to disperse baffle, avoids flue gas direct
Rush at charge level.
4. the front end sludge drying system in solid waste Thermal desorption accumulation of heat burning disposal according to claim 1, feature exist
In the flue gas after drying, igniting leads to next stage burning zone by negative-pressure air fan and participates in burning.
5. the front end sludge drying system in solid waste Thermal desorption accumulation of heat burning disposal according to claim 1, feature exist
In the front end sludge refers to pure sludge or is mixed with the sludge of auxiliary material, and auxiliary material is the object that chaff shell, crushing straw etc. facilitate burning
Material.
6. the front end sludge drying system in solid waste Thermal desorption accumulation of heat burning disposal according to claim 1, feature exist
In the high-temperature flue-gas is about 400-850 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811636850.5A CN109534653A (en) | 2018-12-29 | 2018-12-29 | A kind of front end sludge drying system in solid waste Thermal desorption accumulation of heat burning disposal |
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| CN201811636850.5A CN109534653A (en) | 2018-12-29 | 2018-12-29 | A kind of front end sludge drying system in solid waste Thermal desorption accumulation of heat burning disposal |
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Citations (9)
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|---|---|---|---|---|
| FR2518525A1 (en) * | 1981-12-21 | 1983-06-24 | Nippon Furnace Kogyo Kk | DEVICE FOR RECOVERING PRODUCTS AND ENERGY FROM SLUDGE |
| CN1872747A (en) * | 2005-05-31 | 2006-12-06 | 嘉仕嘉德(北京)能源工程技术有限公司 | System of innocent treatment for grease of oil |
| CN102607040A (en) * | 2012-03-23 | 2012-07-25 | 上海康恒环境工程有限公司 | Method for incinerating domestic garbage and municipal sludge together |
| CN102840587A (en) * | 2012-09-03 | 2012-12-26 | 林秀梅 | Compound method and system for directly recovering heat inside and outside rotary kiln |
| CN103134054A (en) * | 2011-12-02 | 2013-06-05 | 华油惠博普科技股份有限公司 | Vehicle prying type oily sludge intelligent module processing system |
| WO2015005755A1 (en) * | 2013-07-11 | 2015-01-15 | Uab "Enasa" | Installation for sewage sludge recovery and recycling into ecological products |
| CN204310931U (en) * | 2014-11-11 | 2015-05-06 | 浙江三联环保机械设备有限公司 | Mud boiling desiccation apparatus in small, broken bits |
| CN105090993A (en) * | 2014-07-11 | 2015-11-25 | 浙江三联环保机械设备有限公司 | Built-in comprehensive drying and incinerating system for sludge and drying and incinerating method for sludge |
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| FR2518525A1 (en) * | 1981-12-21 | 1983-06-24 | Nippon Furnace Kogyo Kk | DEVICE FOR RECOVERING PRODUCTS AND ENERGY FROM SLUDGE |
| CN1872747A (en) * | 2005-05-31 | 2006-12-06 | 嘉仕嘉德(北京)能源工程技术有限公司 | System of innocent treatment for grease of oil |
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| CN102607040A (en) * | 2012-03-23 | 2012-07-25 | 上海康恒环境工程有限公司 | Method for incinerating domestic garbage and municipal sludge together |
| CN102840587A (en) * | 2012-09-03 | 2012-12-26 | 林秀梅 | Compound method and system for directly recovering heat inside and outside rotary kiln |
| WO2015005755A1 (en) * | 2013-07-11 | 2015-01-15 | Uab "Enasa" | Installation for sewage sludge recovery and recycling into ecological products |
| CN105090993A (en) * | 2014-07-11 | 2015-11-25 | 浙江三联环保机械设备有限公司 | Built-in comprehensive drying and incinerating system for sludge and drying and incinerating method for sludge |
| CN204310931U (en) * | 2014-11-11 | 2015-05-06 | 浙江三联环保机械设备有限公司 | Mud boiling desiccation apparatus in small, broken bits |
| CN105910111A (en) * | 2016-06-15 | 2016-08-31 | 重庆盎瑞悦科技有限公司 | Solid waste incineration system with exhaust gas secondary combustion drying ignition device and treatment method thereof |
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Application publication date: 20190329 |
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