CN202119097U

CN202119097U - Heat carrier boiler using municipal semi-dry sludge

Info

Publication number: CN202119097U
Application number: CN2011201495554U
Authority: CN
Inventors: 毛军华; 林敏�
Original assignee: Wuxi Huaguang Boiler Co Ltd
Current assignee: Wuxi Huaguang Environment and Energy Group Co Ltd
Priority date: 2011-05-12
Filing date: 2011-05-12
Publication date: 2012-01-18
Anticipated expiration: 2021-05-12

Abstract

The utility model provides a heat carrier boiler using municipal semi-dry sludge. The heat carrier boiler does not need any auxiliary fuel, the sludge can be continuously burned by the aid of self heat, and utilization rate of resources is high. The heat carrier boiler comprises a hearth, an upper-stage coal economizer, a lower-stage coal economizer, an upper-stage preheater and a lower-stage preheater, a primary air inlet device and a slag outlet pipe are disposed on the lower portion of the hearth, and the upper-stage coal economizer, the upper-stage preheater, the lower-stage coal economizer and the lower-stage preheater are sequentially communicated with the upper portion of the hearth. The heat carrier boiler is characterized in that the hearth is a heat-insulation hearth, and is provided with a lime stone adding device inlet and a quartz sand adding device inlet which are communicated with the external, a screw feeder is communicated with the inside of the hearth, heat conducting oil is filled in pipelines of the lower-stage coal economizer and the upper-stage coal economizer and is connected into a semi-dry sludge drying device, and an outlet of the semi-dry sludge drying device is communicated with the screw feeder.

Description

A kind of thermal medium boiler that uses city half-driedization mud

Technical field

The utility model relates to the technical field of boiler structure, is specially a kind of thermal medium boiler that uses city half-driedization mud.

Background technology

Municipal sludge is meant solid-state, the semisolid discarded object that city domestic sewage and trade effluent produce in water treatment procedure, it mainly is made up of solid residue and water.The mud that municipal sewage produces contains bacterium and virus; And usually with foul gas; The mud that trade effluent produces then has nitrogen, sulphur, chlorine and heavy metal contaminants, and these pollutants that are retained in the mud are " the most malicious elite " in the sewage, and simple landfill makes them fully expose; Through rain erosion and seepage, meeting is the polluted underground water environment to some extent.

The method of disposal of mud is the row of mainly containing sea, landfill, agricultural and burning etc. at present.Compare with the first three method of disposal, incineration disposal has the remarkable advantage of minimizing, innoxious and resource.Remaining volume has only 10% of mechanical dehydration sludge volume after the sludge incineration; All germs, pathogen in the burning process are all thoroughly killed; Poisonous and hazardous organic matter is decomposed by exhaustive oxidation; The stability of heavy metal improves greatly, and sludge incineration can also utilize the calorific value of mud self to come dewatered sludge, realizes the recycle of heat in the sludge handling process.Ash after the sludge incineration can be used as building material, betterment of land agent even adsorbent and uses after suitable physics and chemical treatment.

Existing sludge incineration technology all need add auxiliary fuel in burning process, it also needs the consumption of auxiliary fuel when handling mud, and resource utilization is not high.

Summary of the invention

To the problems referred to above, the utility model provides a kind of thermal medium boiler that uses city half-driedization mud, and it need not add any auxiliary fuel, and mud relies on the caloric value of self with regard to sustainable burning, and resource utilization is high.

A kind of thermal medium boiler that uses city half-driedization mud; Its technical scheme is such: it comprises burner hearth, higher level's economizer, subordinate's economizer, higher level's preheater, subordinate's preheater; The bottom of said burner hearth is provided with wind air-intake device, residue outlet; The top of said burner hearth is communicated with higher level's economizer, higher level's preheater, subordinate's economizer, subordinate's preheater successively, it is characterized in that: said burner hearth is an adiabatic furnace, and said burner hearth is opened to be equipped with and is communicated with outside lime stone adding set inlet, quartz sand adding set inlet; It is inner that screw(-type) feeder leads to said burner hearth; In the pipeline of said subordinate economizer, higher level's economizer conduction oil is housed, said conduction oil connects the drying device inside of half-driedization mud, and said screw(-type) feeder is led in the outlet of the drying device of said half-driedization mud.

It is further characterized in that: the lower end of said subordinate economizer is equipped with subordinate's economizer inlet header; The upper end of said subordinate economizer is equipped with subordinate's economizer exit collection case; The lower end of said higher level's economizer is equipped with higher level's economizer inlet header; The upper end of said higher level's economizer is equipped with higher level's economizer exit collection case; The outlet collection case of said subordinate economizer connects the inlet header of said higher level's economizer through pipeline, and the outlet collection case of said higher level's economizer is inner through the drying device that pipeline leads to said half-driedization mud.

After adopting the structure of the utility model, half-driedization of conduction oil drying aid mud enters in the burner hearth after the half-driedization mud process conduction oil drying; Because burner hearth is an adiabatic furnace, so the temperature in the burner hearth reaches the burning-point of mud, mud independently burns; It need not add any auxiliary fuel; Mud relies on the caloric value of self with regard to sustainable burning, thereby and conduction oil heat through the heat that sludge incineration produced mud carried out drying, its resource utilization is high.

Description of drawings

Fig. 1 is the front view structural representation of the utility model.

The specific embodiment

See Fig. 1; It comprises burner hearth 1, higher level's economizer 2, subordinate's economizer 4, higher level's preheater 3, subordinate's preheater 5; The bottom of burner hearth 1 is provided with wind air-intake device 7, residue outlet 10, and the top of burner hearth 1 is communicated with higher level's economizer 2, higher level's preheater 3, subordinate's economizer 4, subordinate's preheater 5 successively, and burner hearth 1 is an adiabatic furnace; Burner hearth 1 is provided with igniter 9 on secondary wind air-intake device 8, the bed; Burner hearth 1 is opened to be equipped with and is communicated with outside lime stone adding set inlet 14, quartz sand adding set inlet 11, and screw(-type) feeder 6 leads to burner hearth 1 inside, in the pipeline of subordinate's economizer 4, higher level's economizer 2 conduction oil is housed; Conduction oil connects drying device 15 inside of half-driedization mud, and screw(-type) feeder 6 is led in the outlet of the drying device 15 of half-driedization mud.

The lower end of subordinate's economizer 4 is equipped with subordinate's economizer inlet header 12; The upper end of subordinate's economizer 4 is equipped with subordinate's economizer exit collection case 16; The lower end of higher level's economizer 2 is equipped with higher level's economizer inlet header 17; The upper end of higher level's economizer 2 is equipped with higher level's economizer exit collection case 13, and subordinate's economizer exit collection case 16 connects higher level's economizer inlet header 17 through pipeline, and higher level's economizer exit collection case 13 leads to drying device 15 inside of half-driedization mud through pipeline.

Its operation principle is following: the drying device 15 inner dry half-driedization mud that flow into half-driedization mud after absorbing heat through subordinate's economizer 4, subordinate's economizer exit collection case 16, higher level's economizer inlet header 17, higher level's economizer 2, higher level's economizer exit collection case 13 successively behind the conduction oil inflow subordinate economizer inlet header 12; After half-driedization mud is dried; Be sent in the burner hearth 1 through screw(-type) feeder 6; Because burner hearth 1 is an adiabatic furnace, the temperature in the burner hearth reaches the burning-point of mud; Through the quartz sand/lime stone of lime stone adding set inlet 14, quartz sand adding set inlet 11 input certain particle size in burner hearth, it is expected as bed one time wind gets into burner hearth by a wind air-intake device 7, make the bed material in the stove be in normal fluidized state; Secondary wind enters in the burner hearth from secondary wind air-intake device 8, and half-driedization mud is sent in the burner hearth 1 by screw(-type) feeder 6, and half-driedization mud is gone into processes such as burner hearth 1 back experience heating, drying, pyrolysis, fragmentation and burning.After the half-driedization sludge incineration heat is passed to higher level's economizer 2, higher level's preheater 3, subordinate's economizer 4, subordinate's preheater 5 successively; Cooling back flue gas is discharged boiler; Flue gas through meeting national discharge index after the processing such as dedusting, desulfurization is discharged by chimney, and the slag after the fuel combustion is discharged boiler by residue outlet 10.

Claims

1. thermal medium boiler that uses city half-driedization mud; It comprises burner hearth, higher level's economizer, subordinate's economizer, higher level's preheater, subordinate's preheater; The bottom of said burner hearth is provided with wind air-intake device, residue outlet; The top of said burner hearth is communicated with higher level's economizer, higher level's preheater, subordinate's economizer, subordinate's preheater successively, it is characterized in that: said burner hearth is an adiabatic furnace, and said burner hearth is opened to be equipped with and is communicated with outside lime stone adding set inlet, quartz sand adding set inlet; It is inner that screw(-type) feeder leads to said burner hearth; In the pipeline of said subordinate economizer, higher level's economizer conduction oil is housed, said conduction oil connects the drying device inside of half-driedization mud, and said screw(-type) feeder is led in the outlet of the drying device of said half-driedization mud.

2. a kind of thermal medium boiler that uses city half-driedization mud according to claim 1; It is characterized in that: the lower end of said subordinate economizer is equipped with subordinate's economizer inlet header; The upper end of said subordinate economizer is equipped with subordinate's economizer exit collection case; The lower end of said higher level's economizer is equipped with higher level's economizer inlet header; The upper end of said higher level's economizer is equipped with higher level's economizer exit collection case, and the outlet collection case of said subordinate economizer connects the inlet header of said higher level's economizer through pipeline, and the outlet collection case of said higher level's economizer is inner through the drying device that pipeline leads to said half-driedization mud.