CN2802297Y

CN2802297Y - Incinerator for waste liquid

Info

Publication number: CN2802297Y
Application number: CNU2005200893421U
Authority: CN
Inventors: 尹洪超; 李德付; 赵亮
Original assignee: Dalian University of Technology
Current assignee: Dalian University of Technology
Priority date: 2005-02-04
Filing date: 2005-02-04
Publication date: 2006-08-02
Anticipated expiration: 2015-02-04

Abstract

The utility model relates to an incinerator for waste liquid, which belongs to the purifying device field of the heat recovery after the incineration of the waste liquid of chemical industry and papermaking industry. The utility model is mainly composed of a waste liquid incinerator and a waste heat boiler, wherein the waste heat boiler is formed by welding a horizontal vertical header tank, a horizontal transverse header tank, a heat exchange tube bank, a dropping tube, a rising tube and a steam dome to form a water circulating system with a communicated inner chamber and the water circulating system is also used as a boiler body framework. An inspection channel is arranged between the groups of solidified slag tube banks, and a dust cleaning boiler door, a dust blowing device, a dust bucket and a dust cleaning window are arranged on the boiler body. The waste heat boiler has the advantages of simple structure, light weight and small size; the heat exchange efficiency of the heat exchange tube bank is obviously increased; the solidified slag tube banks with large intervals are used for effectively preventing the slagging and bridging between the tubes so that the tube banks only generate loose smutch which is easy to clean; the dust cleaning work is simple with high efficient, and continuous operating time is prolonged from the primary only one week to three months. The utility model can use the waste heat to generate hot water, steam and hot wind, and can satisfy the environmental protection requirement of the waste liquid incineration under various loads.

Description

The liquid waste incineration device

Technical field

The utility model relates to a kind of liquid waste incineration device, and it belongs to the cleaning equipment field of heat recovery behind the liquid waste incineration that is mainly used in chemical industry, paper industry.

Background technology

At present, chemical industry, paper industry produce a large amount of industrial wastewaters, black liquor aborning, contain a large amount of chemical substances in the waste water, for example: liquified hydrogen cyanic acid, sulphur ammonium and various organic matters etc., biodegradability is poor.The industrial wastes processing method is mainly adopted method to deep under ground high-pressure injection and waste water incineration, the external main way that adopts to the deep under ground high-pressure injection, the way of domestic common employing burning disposal.Burn poisonous waste water by waster water incinerator, make waste water in combustion process, be decomposed into non-toxic gas, enter atmosphere.Since contain a large amount of moisture in the waste water, flammable poor, so palpus consume fuel in the combustion process, furnace temperature is remained on about 850 ℃, so that waste water effectively decomposes.Simultaneously, because a large amount of chemical substances that contain in the waste water, in burning process, combustion product is very easily attached on the heat exchange tube wall, along with washing away of high-temperature flue gas, and the water evaporates of combustion product, become the black dirt of undecomposable, hard and difficult removing, and be deposited in a short period of time in the heat exchanger tube passage, make the actual internal area of flue gas diminish, waste heat boiler can't normally be moved.Must remove black dirt for making waste heat boiler recover normal operation, the time of removing black dirt work is long, general each wanting about a week, and condition of work is abominable, and labor strength is big.Existing in addition waste water incineration furnace flue gas exhaust heat utilization rate is extremely low, and the thermal efficiency is low, and 400～600 ℃ high-temperature flue gas directly enters atmosphere, wastes energy, and contaminated environment has increased the cost recovery of equipment.

Summary of the invention

In order to make waste heat boiler can keep the normal operation of long period, on heat exchanger tube row, be difficult for forming black dirt hard and that be difficult to remove, the utility model provides a kind of liquid waste incineration device, this incinerator should make its heat exchanger tube row have higher heat exchange efficiency, can only generate the lax black dirt that is easy to remove on crust block pipe row; The device of being convenient to blow ash and deashing should be set on body of heater, alkali dirt is separated and collection automatically.The waste heat that it also should be able to utilize burning waste water to produce removes to produce hot water, steam and hot blast, and can satisfy the environmental requirement of liquid waste incineration under various loads.

The technical scheme that its technical problem that solves the utility model adopts is: a kind of liquid waste incineration device, it mainly comprises a waster water incinerator and a waste heat boiler, one end of waster water incinerator is equipped with burner, the other end is connected with waste heat boiler through flue expansion joint, the inboard of waste heat boiler is provided with heat exchanger tube row, the top is provided with drum, is provided with economizer and air preheater in chimney.Two the vertical collection of level casees are communicated with the upper framework that welds together formation water pipe waste heat boiler with the horizontal collection box cavity of level, two the vertical collection of level casees are communicated with the following framework that welds together formation water pipe waste heat boiler with the horizontal collection box cavity of level, by heat exchanger tube row the horizontal collection box cavity of the level on horizontal collection case of the level on the upper framework and the following framework is communicated with to weld together.With tedge the vertical collection of the level on drum and upper framework box cavity is communicated with and welds together, with down-comer the level on drum and the following framework is indulged and collect box cavity and be communicated with and weld together.Be provided with deashing fire door and automatic soot blower in the side of waste heat boiler, the bottom is provided with ash bucket, and the both sides of bottom are provided with dust and remove window.Two ends of the vertical collection of the level case on vertical collection case of the level on the upper framework and the following framework are provided with stay pipe.The horizontal collection case of each level is provided with the heat exchanger tube row that two rows intermesh.Heat exchanger tube row is made up of crust block pipe row, light pipe pipe row and finned tube row, and heat exchanger tube row is by coming the cigarette direction to arrange with crust block pipe row, light pipe pipe row and finned tube row's order.Four condensate drain slag pipes row is one group, and group distance A is 500mm～900mm.

The guiding theory of technique scheme is: the vertical collection of waste heat boiler employing level case, the horizontal collection case of level, heat exchanger tube row, down-comer, tedge and drum are formed the integral frame that inner chamber is communicated with, and for simplified structure, save material.Heat exchanger tube row is divided into crust block pipe row, light pipe pipe row and finned tube row, in order to significantly improve heat exchanger tube row's heat exchange efficiency, has especially adopted the crust block pipe row of big spacing in the front portion of waste heat boiler, effectively prevents birdnesting deposit between pipe.Leave access path between crust block pipe row group, the body of heater side is provided with deashing fire door and soot blower automatically, and the bottom is provided with ash bucket, and the both sides of bottom are provided with dust and remove window, so that ash blowing and cleaning during not blowing out, or the workman can directly enter deashing in the stove when needing.

The beneficial effects of the utility model are: the vertical collection of this liquid waste incineration device employing level case, the horizontal collection case of level, heat exchanger tube row, down-comer, tedge and drum are formed the integral frame that inner chamber is communicated with.Leave access path between crust block pipe row group, the body of heater side is provided with deashing fire door and automatic soot blower, and the bottom is provided with ash bucket, and the both sides of bottom are provided with dust and remove window.Make this incinerator furnace structure simple, in light weight and volume is little; Significantly improved heat exchanger tube row's heat exchange efficiency; Especially adopted the crust block pipe row of big spacing in the front portion of waste heat boiler, effectively prevented birdnesting deposit between pipe, only generate the lax black dirt that is easy to remove on pipe row, made deashing work simply efficient, continuous operating time extends to three months by an original only week.

Description of drawings

The utility model is described in further detail below in conjunction with drawings and Examples.

Fig. 1 is a kind of structure chart of liquid waste incineration device.

Fig. 2 is the side view of Fig. 1.

Fig. 3 is a kind of heat exchange of water pipe waste heat boiler and the structure chart of water Natural Circulation.

Fig. 4 is the A-A cutaway view among Fig. 3.

Fig. 5 is the side view of Fig. 3.

Among the figure: 1, burner, 2, waster water incinerator, 3, flue expansion joint, 4, down-comer, 5, tedge, 6, drum, 7a, 7b, the vertical collection of level case, 7c, the horizontal collection case of 7d level, 7e, stay pipe, 8, dust is removed window 9, heat exchanger tube row, 9a, crust block pipe row, 9b, light pipe pipe row 9c, finned tube row, 10, ash bucket, 11, the deashing fire door, 12, soot blower automatically, 13, water preheater, 14, air preheater, 15, chimney.

The specific embodiment

In the embodiment shown in Fig. 1,2, mainly comprise a waster water incinerator 2 and a waste heat boiler, one end of waster water incinerator 2 is equipped with burner 1, the other end is connected with waste heat boiler through flue expansion joint 3, the inboard of waste heat boiler is provided with heat exchanger tube row 9, the top is provided with drum 6, is provided with economizer 13 and air preheater 14 in chimney 15.Waster water incinerator 2 is horizontal cylinder, and the liner fireclay insulating refractory is furnished with a plurality of nozzles on cylinder, becomes 30 °～45 ° angle interlaced arrangement with cylinder.Waste water is from nozzle spirt burner hearth and the abundant mixed combustion of burned flame, harmful chemical is decomposed, the flue gas that contains chemical substance enters waste heat boiler, carry out heat exchange with the water in the heat exchanger tube row 9, make flue gas obtain cooling, harmful chemical obtains cooling, separation and dirt and falls, and then enters in the flue that is provided with economizer 13 and air preheater 14 parts, treats that it is fully emitted to enter chimney 15 behind the heat and enter atmosphere.Waste heat boiler feeds water by obtaining heating behind economizer 13 and the flue gas heat exchange, enter in the drum 6, flow to vertical collecting box pipe of level and heat exchanger tube row 9 and flue gas by down-comer 4 and carry out heat exchange, the steam water interface that produces enters drum 6 by tedge 5, form Natural Circulation, steam water interface produces steam by the water separator in the drum 6.Respectively be provided with two automatic soot blower 12, one sides in the both sides of waste heat boiler and be provided with five deashing fire doors 11, the bottom is provided with 10 ash buckets 10, and the both sides of bottom respectively are provided with six dusts and remove window 8.This waste heat boiler the time can adopt automatic soot blower 12 deashings in operation, carries out artificial deashing but also enter from deashing fire door 11 after the blowing out, and the black dirt of removing enters furnace bottom through ash bucket 10, can remove window 8 from dust at last black dirt is removed.

At Fig. 3,4, among the embodiment shown in 5, two the vertical collection of level case 7a are communicated with the upper framework that welds together formation water pipe waste heat boiler with 20 the horizontal collection case of level 7c inner chambers, two the vertical collection of level case 7b are communicated with the upper framework that welds together formation water pipe waste heat boiler with 20 the horizontal collection case of level 7d inner chambers, by heat exchanger tube row 9 connection of the horizontal collection case of the level 7d inner chamber on the horizontal collection case of the level on upper framework 7c and the following framework is welded together, every side is all used five tedges 5 that the vertical collection of the level on drum 6 and upper framework case 7a inner chamber is communicated with to weld together, and every side all use two down-comers 4 that the level on drum 6 and the following framework is indulged to collect case 7b inner chamber and be communicated with and weld together.Two ends of the vertical collection of level case 7b on the vertical collection of level on upper framework case 7a and the following framework are provided with stay pipe 7e.The horizontal collection case of each

level

7c, 7d are provided with the heat exchanger tube row 9 that two rows intermesh.Above textural association has constituted heat exchange and the water natural cycle system and the double as body of heater skeleton of a water pipe waste heat boiler, changes the way that tradition adopts section steel manufacture body of heater skeleton.Above-mentioned heat exchanger tube row 9 is made up of crust block pipe row 9a, light pipe pipe row 9b and finned tube row 9c, and heat exchanger tube row is by coming the cigarette direction to arrange with the order of crust block pipe row 9a, light pipe pipe row 9b and finned tube row 9c.Four condensate drain slag pipes row 9a is one group, and group distance A is 500mm.The row-to-row distance of crust block pipe row 9a is 125mm, from being 170mm, adopts light pipe to make with the tube pitch of arranging.The row-to-row distance of light pipe pipe row 9b and finned tube row 9c is 125mm, and from being 100mm, finned tube row 9 should adopt the fin of big spacing with the tube pitch of arranging.

Claims

1, a kind of liquid waste incineration device, it mainly comprises a waster water incinerator (2) and a waste heat boiler, one end of waster water incinerator (2) is equipped with burner (1), the other end is connected with waste heat boiler through flue expansion joint (3), the inboard of waste heat boiler is provided with heat exchanger tube row (9), the top is provided with drum (6), in chimney (15), be provided with economizer (13) and air preheater (14), it is characterized in that: two level vertical collection casees (7a) are communicated with the upper framework that welds together formation water pipe waste heat boiler with the horizontal collection case of level (7c) inner chamber, two level vertical collection casees (7b) are communicated with the following framework that welds together formation water pipe waste heat boiler with the horizontal collection case of level (7d) inner chamber, by heat exchanger tube row (9) connection of the horizontal collection case of level (7d) inner chamber on horizontal collection case of the level on the upper framework (7c) and the following framework is welded together, with tedge (5) the vertical collection of the level on drum (6) and upper framework case (7a) inner chamber is communicated with and welds together, with down-comer (4) the vertical collection of the level on drum (6) and following framework case (7b) inner chamber is communicated with and welds together, be provided with deashing fire door (11) and automatic soot blower (12) in the side of waste heat boiler, the bottom is provided with ash bucket (10), and the both sides of bottom are provided with dust and remove window (8).

2, according to the described liquid waste incineration device of claim 1, it is characterized in that: two ends of the level vertical collection case (7b) on vertical collection case (7a) of the level on the upper framework and the following framework are provided with stay pipe (7e).

3, according to the described liquid waste incineration device of claim 1, it is characterized in that: the horizontal collection case of each level (7c) (7d) is provided with two and arranges the heat exchanger tube row (9) who intermeshes.

4, according to claim 1 or 3 described liquid waste incineration devices, it is characterized in that: above-mentioned heat exchanger tube row (9) is made up of crust block pipe row (9a), light pipe pipe row (9b) and finned tube row (9c), and heat exchanger tube row is by coming the cigarette direction to arrange with crust block pipe row (9a), light pipe pipe row (9b) and finned tube row's (9c) order.

5, according to the described liquid waste incineration device of claim 4, it is characterized in that: four condensate drain slag pipes rows (9a) are one group, and group distance A is 500mm～900mm.