CN201521971U

CN201521971U - Waste liquor burning boiler

Info

Publication number: CN201521971U
Application number: CN2009201410915U
Authority: CN
Inventors: 赖育华; 王勇; 邹永康
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-07-20
Filing date: 2009-07-20
Publication date: 2010-07-07
Anticipated expiration: 2019-07-20

Abstract

The utility model discloses a waste liquor burning boiler, comprising a boiler body, a wind distributing device, a burning chamber, a boiler barrel, a heat exchange device and an ash recovery device. The waste liquor burning boiler is characterized in that the bottom of the burning chamber is provided with a fluidized bed wind distributing device with a water-cooling air bellow, the burning chamber and the fluidized bed wind distributing device have all-film type water-cooling wall structure, the front of a smoke outlet of the burning chamber is provided with a circulating smoke inlet, a horizontal flue is arranged between the smoke outlet of the burning chamber and the inlet of a first-stage evaporating tube panel, the horizontal flue is internally provided with a super heater, a tail convection flue comprises the first-stage evaporating tube panel, a second-stage evaporating tube panel and a coal economizer panel which are independent, and the super heater, the evaporating tube panels and the coal economizer panel are provided with a vibrating ash cleaning device. The waste liquor burning boiler not only leads the waste liquor and concentrated liquor to be burnt completely, leads the burning to be easily controlled, and is not easy to generate the phenomena of coking and ash deposition, but also utilizes heat which is released by burning the waste liquor and the concentrated liquor to generate steam which is used for generating electricity and concentrating the waste liquor, and burns the concentrated waste liquor which is returned to the boiler, thus completely treating the waste liquor which is discharged in production, saving energy, reducing the cost for treating the waste liquor and enhancing the comprehensive treating capacity of the device.

Description

The incineration of liquor boiler

Technical field

The utility model relates to a kind of boiler, particularly can burn to handle the boiler of high concentrated organic wastewater.

Background technology

Because the high concentrated organic wastewater intractability of light industry such as sugaring at present, food, papermaking is big, alcohol effluent particularly, be that sugar refinery saccharified residues molasses are through fermentation, the useless mash that mash discharges after destilling tower distillates alcohol, its discharge capacity is big, and colourity is dark, acidity is big, be rich in sugar and other organic matter, smelly easily, annual discharge capacity is equivalent to more than 13 times of alcohol output, is the most serious blowdown source of sugar industry.In order to handle high concentrated organic wastewater, the high concentrated organic wastewater processing method of sugaring, food, papermaking has been studied with enterprise by at present a lot of universities, research institute, the biochemical methods such as processing, anaerobic biological degraded, chemical simulation biodegradation and electrochemical treatments that promote are adopted in the research that has, though can handle up to standardly, have the utility that a lot of high concentrated organic wastewaters contain not to be fully used.So with organic liquid waste evaporation and concentration, burning, the burning organic liquid waste reclaims heat energy and reclaims useful material simultaneously, realizes Zero discharge, is the direction of development.Open source literature report condensed combustion waste liquid has following several technical scheme preferably at present: 1, ZL01267108.8 waste liquid spout and two, tertiary air above the adiabatic fluid bed of combustion chamber, combustor exit is provided with U-shaped flying dust expansion chamber, back-end surfaces is established calandria convection tube and economizer, can make boiler combustion stable, the steam of generation is for producing or the use of concentrated alcohol effluent.2, ZL99212182.5 makes reflection arch with top of combustion chamber, alcohol effluent concentrate hydrojet nozzle is located at the close phase layer of graininess (fluid bed) top, heat reclamation device is parallel with to be located at the heat exchanger A in the flue front end and to be located at the heat exchanger B in the afterbody in the flue, is provided with grey retracting device in the flue between two heat-exchanger.3, ZL00250407.3 will send to the multi-stage spray evaporimeter of combustion furnace outlet from rare waste liquid that the alcohol distillation tower is drawn, contact with hot flue gas, with the alcohol effluent concentrate drying, concentrate directly sprays in the stove or mixes with coal or bagasse, filter mud puts into the combustion furnace burning, hot flue gas behind dedusting and recovery heat from smoke stack emission.4, ZL01201786.8 is divided into three chambers with the heat exchange segregator of alcohol slops concentration with tube sheet, superposed upper liquid chamber, be positioned at the following liquid chamber of bottom and be positioned at the middle part steam chest, between described upper liquid chamber and following liquid chamber, be connected with heat exchanger tube, described heat exchanger tube passes described steam chest, is set with the baffle plate that staggers mutually on each heat exchanger tube in steam chest.

The open source literature of above-mentioned extracts has reported that waste liquid concentrates, the method for burning and the structure of combustion furnace, in the method for waste liquid condensed combustion, just provided concentrate, method that burning and heat recovery produce low-grade steam, also do not provide treatment scale and enlarge back raising heat energy quality, make full use of the approach of heat energy; Aspect disclosed combustion apparatus, also there be easily dust stratification, coking, grey retracting device and the easy dust stratification of each heating surface and difficult cleaning etc. on the difficult control of fire box temperature, combustion instability, the reflection arch, have a strong impact on the long-term normal operation continuously of waste liquid concentrate combustion furnace, problems such as Btu utilization is abundant not enough, and the thermal efficiency is low.

Summary of the invention

The purpose of this utility model be to provide a kind of can efficient stable burning concentrate organic liquid waste, not only thoroughly burn high concentrated organic wastewater or waste liquid, can also improve steam parameter, realize online ash removal, capacity high parameter development greatly, the incineration of liquor boiler that the thermal efficiency is high.

Incineration of liquor boiler described in the utility model, comprise body of heater, air-distribution device, combustion chamber, drum, heat-exchange device and deashing device, be characterized in: the bottom of combustion chamber is provided with the fluid bed air-distribution device of band water-cooled bellows, combustion chamber and fluid bed air-distribution device are as a whole, be whole film water cold wall structures, be provided with the circulating flue gas import before the exhanst gas outlet of combustion chamber; Be set as horizontal flue between the inlet of the exhanst gas outlet of combustion chamber and one-level evaporation tube panel, steam superheater is set in the horizontal flue, ash removal equipment for flapping has been installed on the superheater; The afterbody convection pass is made up of the evaporation of one-level independently tube panel, dual evaporation tube panel, economizer screen, and independently one-level evaporation tube panel, dual evaporation tube panel, economizer have all been installed ash removal equipment for flapping on shielding.

Above-described incineration of liquor boiler, waste-liquor burner is established in fluid bed air-distribution device top in the combustion chamber, and the waste-liquor burner below is provided with the secondary air import.

Above-described incineration of liquor boiler, combustion chamber bottom water packaged air conditioner is provided with oil ignition combustor.

Above-described incineration of liquor boiler, horizontal flue is provided with the collection apparatus for ash.

Above-described incineration of liquor boiler, drum, combustion chamber, one-level evaporation tube panel, dual evaporation tube panel, economizer screen, all independent layout of superheater are all hung on steelframe, adopt localized ducting to be connected with drum.

The advantage of the utility model incineration of liquor boiler is:

1, compared with the prior art, incineration of liquor boiler of the present utility model is provided with steam superheater, and the superheated steam that boiler produces at first is used for generating electricity, and is used further to produce, and improves energy utilization rate, and is good in economic efficiency.

2, furnace outlet is provided with the circulating flue gas interface, can regulate flue-gas temperature according to boiler operating state, avoided the superheater coking, flue can be made as horizontal flue between furnace outlet and the one-level evaporation tube panel, and superheater can adopt the good flue gas transversal flow mode of heat-transfer effect, improves the convection heat transfer' heat-transfer by convection effect, simple in structure, save material, reduce investment, simple installation.

3, combustion chamber and fluid bed air-distribution device are as a whole, for whole film water cold wall structures, do not have brick wall, do not leak out, and ignition temperature is low, fluid bed noncoking, furnace wall safety, good operational environment.

4, an air compartment full water cooling is arranged, is convenient to install on air compartment oil ignition combustor, the more convenient and quicker of lighting a fire automatically, and the igniting reliability is higher, and ignition process air distribution plate safety is indeformable, is beneficial to the big capacity high parameter development of incineration of liquor boiler.

5, only establish secondary wind in the combustion chamber, operate easylier, flame kernel is lower, has increased waste liquid and has burnt the time, improves incineration of liquor efficient and favourable reduction furnace outlet temperature, reduces rear portion convection tube coking chance.

6, furnace outlet is established the circulating flue gas interface, can mix with the combustion chamber high temperature flue gas by loopback part low-temperature flue gas, regulate flue gas temperature of hearth outlet, avoid rear portion superheater coking, improve the be heated flue gas flow rate in area under control of convection current, improve the convection heat transfer' heat-transfer by convection effect and reduce the flying dust deposition, save material, reduce investment.

7, the afterbody convection pass is made up of the evaporation of one-level independently tube panel, dual evaporation tube panel, economizer screen, separates with drum, can assemble the shortening installation period in manufactory.

8, combustion chamber, superheater, one-level evaporation tube panel, dual evaporation tube panel, economizer screen separate with drum, full welding, and antivibration is beaten, shock resistance, install respectively than the more reliable rapping formula of steam deashing device deashing device, the operation mutually noninterfere can not influence drum intensity, security of operation.

Description of drawings

Fig. 1 is the structural representation of the utility model incineration of liquor boiler.

The specific embodiment

As shown in drawings: the combustion chamber 2 of the utility model incineration of liquor boiler, horizontal flue 8 and the one-level evaporation tube panel 6, dual evaporation tube panel 5, the economizer screen 12 that are arranged in juxtaposition form the π type and arrange, combustion chamber 2 bottommosts are provided with the fluid bed air-distribution device of water-cooled bellows 1, and water-cooled bellows 1 are provided with oil ignition combustor 14.Combustion chamber 2 is whole film water cold wall structures, and the fin panel casing bottom of combustion chamber 2 is bent into airtight water-cooled bellows 1; Waste-liquor burner 4 is established in the fluid bed air-distribution device top of water-cooled bellows 1, and the waste-liquor burner below is provided with secondary air import 3; Be provided with circulating flue gas import 10 before the exhanst gas outlet of combustion chamber 2.Be set as horizontal flue 8 between the inlet of the exhanst gas outlet of combustion chamber 2 and one-level evaporation tube panel 6, steam superheater 9 is set in the horizontal flue 8, ash removal equipment for flapping 7 has been installed on the superheater 9; The steam inlet of superheater 9 is connected with drum 11 by localized ducting 15, and the steam inlet of superheater 9 is established steam header 18; Horizontal flue 8 bottoms are provided with collection apparatus for ash 17.One-level evaporation tube panel 6, dual evaporation tube panel 5, economizer screen 12 are arranged in juxtaposition, and ash removal equipment for flapping 7 has been installed respectively on it; Be respectively equipped with collection apparatus for ash 13 below one-level evaporation tube panel 6, dual evaporation tube panel 5, the economizer screen 12; One-level evaporation tube panel 6, dual evaporation tube panel 5, economizer screen 12 adopt localized ducting 15 to be connected with drum 11; Collection apparatus for ash 13 under the economizer screen 12 is provided with flue gas interface 19.Combustion chamber 2, drum 11, superheater 9, one-level evaporation tube panel 6, dual evaporation tube panel 5, economizer screen 12 are all hung on steelframe 16.

The course of work of the present utility model is: when starting boiler, at first arrive ordinary water level to drum 11 water fillings, start oil ignition combustor 14, the air that the burning that the heating boiler pressure fan comes needs, the hot-air fluid bed air-distribution device by water-cooled bellows 1 is heating flame chamber 2 gradually.When treating that combustion chamber 2 temperature of lower are elevated to more than 800 ℃, open waste-liquor burner 4, waste liquid is atomized the back at the 2 times end burnings in the combustion chamber of burner below 4, and the air quantity according to waste liquid amount adjustment secondary air import 3 makes burning fully.The fin panel casing of the burned chamber 2 of heat that incineration of liquor produces absorbs, and the water in the heating fin panel casing produces steam, and steam is pooled to drum 11 by localized ducting 15.The fin panel casing of combustion chamber 2 is according to cycle of operation difference, endothermic effect can change, cause the high-temperature flue-gas of combustion chamber 2 outlets also to change, when the high-temperature flue-gas of outlet is higher, start the circulating flue gas blower fan, the low-temperature flue gas that the part boiler is discharged send machine combustion chamber 2 to mix with high-temperature flue gas by the circulating flue gas interface 10 that combustion chamber 2 exports, the flue-gas temperature of control combustion chamber 2 outlets is lower than the flying dust softening point of flue gas, reduces flying dust and bonds on the higher superheater 9 of tube wall temperature.The high-temperature flue gas of combustion chamber 2 outlets is at horizontal flue 8 heating superheaters 9; The low-temperature saturated steam of drum 11 is delivered to superheater 9 by localized ducting 15, and low-temperature saturated steam becomes hyperthermia and superheating steam and is pooled to steam header 18 after superheater 9 is heated; The hyperthermia and superheating steam of steam header 18 is used for producing after being sent to the steam turbine generator generating again; Regularly open the ash removal equipment for flapping 7 on the superheater 9, keep the metal surface of superheater 9 clean, guarantee that the endothermic effect of superheater 9 is good all the time, the grey piece that rapping is got off reclaims by the collection apparatus for ash 17 of being located at horizontal flue 8 bottoms.High-temperature flue gas shields 12 heat releases cooling by one-level evaporation tube panel 6, dual evaporation tube panel 5, economizer after further reducing temperature by superheater 9 successively, is drained by air-introduced machine via the flue gas interface on the collection apparatus for ash 13 under the economizer screen 12 19 at last; One-level evaporation tube panel 6, dual evaporation tube panel 5 produce steam, and steam also is pooled to drum 11 by localized ducting 15; After being heated, boiler feedwater in the economizer screen 12 also is pooled to drum 11 by localized ducting 15; Regularly open the ash removal equipment for flapping 7 on one-level evaporation tube panel 6, dual evaporation tube panel 5, the economizer screen 12, keep its metal surface clean, guarantee that endothermic effect is good all the time, the grey piece that rapping is got off reclaims respectively by being located at the collection apparatus for ash 17 that one-level evaporation tube panel 6, dual evaporation tube panel 5, economizer shield 12 bottoms.

Claims

1. incineration of liquor boiler, comprise body of heater, air-distribution device, combustion chamber, drum, heat-exchange device and deashing device, it is characterized in that: the bottom of combustion chamber (2) is provided with the fluid bed air-distribution device of band water-cooled bellows (1), combustion chamber and fluid bed air-distribution device are as a whole, be whole film water cold wall structures, be provided with circulating flue gas import (10) before the exhanst gas outlet of combustion chamber; Be set as horizontal flue (8) between the inlet of the exhanst gas outlet of combustion chamber and one-level evaporation tube panel (6), superheater (9) is set in the horizontal flue, ash removal equipment for flapping (7) has been installed on the superheater; The afterbody convection pass is made up of the evaporation of one-level independently tube panel (6), dual evaporation tube panel (5), economizer screen (12), and independently one-level evaporation tube panel, dual evaporation tube panel, economizer all are equipped with ash removal equipment for flapping (7) on shielding.

2. incineration of liquor boiler according to claim 1 is characterized in that: in the described combustion chamber, waste-liquor burner (4) is established in fluid bed air-distribution device top, and waste-liquor burner (4) below is provided with secondary air import (3).

3. incineration of liquor boiler according to claim 1 is characterized in that: described combustion chamber bottom water packaged air conditioner (1) is provided with oil ignition combustor (14).

4. incineration of liquor boiler according to claim 1 is characterized in that: described horizontal flue (8) is provided with collection apparatus for ash (17).

5. incineration of liquor boiler according to claim 1, it is characterized in that: described combustion chamber (2), one-level evaporation tube panel (6), dual evaporation tube panel (5), economizer screen (12), superheater (9) are all solely square to be arranged, all hang on steelframe (16), adopt localized ducting (15) to be connected with drum (11).