CN105920993A - White-mud-method smoke desulphurization tower - Google Patents

White-mud-method smoke desulphurization tower Download PDF

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Publication number
CN105920993A
CN105920993A CN201610515148.8A CN201610515148A CN105920993A CN 105920993 A CN105920993 A CN 105920993A CN 201610515148 A CN201610515148 A CN 201610515148A CN 105920993 A CN105920993 A CN 105920993A
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CN
China
Prior art keywords
smoke
intake pipe
pipe road
room
tower
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Granted
Application number
CN201610515148.8A
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Chinese (zh)
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CN105920993B (en
Inventor
高树吉
应广东
万胜举
乔军
田超
韩文佳
马敏
马宏峰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shandong Sun Hong River Paper Co Ltd
YANZHOU TIANZHANG PAPER CO Ltd
SHANDONG TAIYANG PAPER INDUSTRY Co Ltd
Original Assignee
Shandong Sun Hong River Paper Co Ltd
YANZHOU TIANZHANG PAPER CO Ltd
SHANDONG TAIYANG PAPER INDUSTRY Co Ltd
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Application filed by Shandong Sun Hong River Paper Co Ltd, YANZHOU TIANZHANG PAPER CO Ltd, SHANDONG TAIYANG PAPER INDUSTRY Co Ltd filed Critical Shandong Sun Hong River Paper Co Ltd
Priority to CN201610515148.8A priority Critical patent/CN105920993B/en
Publication of CN105920993A publication Critical patent/CN105920993A/en
Application granted granted Critical
Publication of CN105920993B publication Critical patent/CN105920993B/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/46Removing components of defined structure
    • B01D53/48Sulfur compounds
    • B01D53/50Sulfur oxides
    • B01D53/501Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
    • B01D53/502Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound characterised by a specific solution or suspension
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2251/00Reactants
    • B01D2251/40Alkaline earth metal or magnesium compounds
    • B01D2251/404Alkaline earth metal or magnesium compounds of calcium
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2258/00Sources of waste gases
    • B01D2258/02Other waste gases
    • B01D2258/0283Flue gases

Abstract

The invention relates to the field of smoke desulphurization equipment, in particular to a white-mud-method smoke desulphurization tower. The white-mud-method smoke desulphurization tower comprises a tower body, wherein a smoke inlet and a smoke outlet are formed in the tower body, and a spraying device is arranged in the tower body; the smoke inlet is connected with a smoke inlet pipeline, the cross section of the smoke inlet pipeline is in a rectangular shape, a first box body and a second box body are respectively arranged outside two opposite side walls of the smoke inlet pipeline, and a heat exchanging pipe is arranged inside the smoke inlet pipeline; the interior of the first box body is divided into a chamber A and a chamber B by virtue of a separation plate, a medium inlet and a medium outlet are formed in the first box body, the chamber A is communicated with the medium inlet, and the chamber B is communicated with the medium outlet; a chamber C is arranged inside the second box body, and the chamber A, the chamber C and the chamber B are successively communicated by virtue of the heat exchanging pipe; and the smoke inlet pipeline is obliquely arranged, and the end, connected with the smoke inlet, of the smoke inlet pipeline is lower than the other end of the smoke inlet pipeline. The white-mud-method smoke desulphurization tower is energy-saving, environment-friendly and stable to run.

Description

A kind of white clay method fume desulfurizing tower
Technical field
The present invention relates to flue gas desulfurization device field, specifically a kind of white clay method fume desulfurizing tower.
Background technology
At present, most of power plant of China still generates electricity using coal as main fuel, and coal-burning boiler is the primary discharge source of atmosphere pollution SO2, and therefore, the control dynamics strengthening thermal power plant SO2 is the most urgent and necessary.Flue gas desulfurization (FGD) is currently to control coal-burning boiler SO2 to discharge one of the most effective approach.Industrial flue gas desulfurization technique can be divided into dry method, wet method and semidry method three major types.Wherein, Desulfurization of Wet Limestone-gypsum technique accounts for the whole world and is building and the 90% of built desulfurizer employing amount, occupies an leading position in existing flue gas desulfurization technique.
Limestone scrubbing FGD, it is with lime stone slurry as desulfurizing agent, in desulfurizing tower, flue gas is carried out spray washing, generation CaSO3 is reacted with the SO2 in flue gas, blast oxygen to the serosity of desulfurizing tower simultaneously, make CaSO3 be oxidized to CaSO4 precipitation, i.e. Gypsum Fibrosum, use this method that coal burning flue gas desulfurization rate can be made to reach more than 90%.In whole sweetening process, the expense of limestone accounts for the 17% of whole sulfur removal technology totle drilling cost.But the limestone natural crystal resource that to be a kind of reserves limited, exploitation limestone not only can destroy ecology, and limestone is higher to being processed into the cost of material meeting sulfur removal technology requirement from exploitation, transport.
White clay, is that paper industry carries out the Main By product of generation in alkali recovery process to black liquor of pulp making, and its main chemical compositions is calcium carbonate, additionally possibly together with a part of calcium oxide and the impurity of the type such as silicon, slaine.At present the white clay actual production of alkali recovery process is about 2 ~ 2.2 tons of white claies/ton alkali, to produce the white clay more than 3,000,000 tons every year for this China paper mill, is one of the primary solids garbage of papermaking industry.The mode of conventional harmless treatment paper white sludge specifically includes that being sintered into Calx is used as papermaking filler and for producing the construction material such as cement, coating at the recycling of alkali collection workshop section, Hydrolysis kinetics calcium carbonate;It addition, paper white sludge also has a kind of the easiest, practical processing mode, it is simply that white clay to be used as the fume desulfurizing agent of coal-burning boiler.According to detection, in white clay, CaCO3 content is about 85%, wherein, particle diameter accounts for more than 90% below 45 μm, desulphurizing activated preferably, contain promotion composition Na2O, MgO etc. of desulfurization simultaneously, fully achieve the flue gas desulphuization rate of more than 90%, and white clay is converted into Gypsum Fibrosum in flue gas desulfurization course, has certain economic use value, therefore can solve solid and the process problem of the big garbage of gas two in paper mill simultaneously, reach the purpose of the treatment of wastes with processes of wastes against one another, cost efficiency.
The flow process of white clay method sulfur removal technology is, the suspension that desulfurizing agent and water are configured under room temperature bar concentration 20 ~ 25% sprays in tower from desulfurizing tower middle and upper part, and desulfurizing agent mixes with up flue gas adverse current and reaction desulfuration.Owing to cross section, smoke-intake pipe road is relatively big, easily being deformed by high-temperature flue gas effect, affect service life of equipment, therefore, existing inside is provided with many and strengthens support column to prevent smoke-intake pipe road deformed damaged.After strengthening the heat of support column absorption high-temperature flue gas, temperature is higher, when in desulfurizing agent is sprayed to smoke-intake pipe road or when flowing in smoke-intake pipe road along inner wall of tower, can quickly dry out and be attached to strengthen on support column, this not only can affect being fully contacted of desulfurizing agent and flue gas, reduce desulfuration efficiency, also result in desulfurizing agent with reaction after generate Gypsum Fibrosum together with rapid solidification, block smoke-intake pipe road, affect equipment properly functioning.
Summary of the invention
The invention aims to solve above-mentioned the deficiencies in the prior art, there is provided the technical scheme of a kind of white clay method fume desulfurizing tower, it is possible to prevent smoke-intake pipe road from blocking, thus ensure the properly functioning of desulfuration efficiency and equipment, can also Mist heat recovering, improve energy utilization rate.
The technical problem to be solved realizes by the following technical solutions: a kind of white clay method fume desulfurizing tower, including tower body, described tower body is provided with smoke inlet and exhaust opening, is provided with spray equipment in tower body;Described smoke inlet is connected with smoke-intake pipe road, and the cross section in described smoke-intake pipe road is rectangle, is respectively equipped with the first casing and the second casing outside the two opposite side walls in smoke-intake pipe road, and the inside in smoke-intake pipe road is provided with heat exchanger tube;Described first box house is divided into A room and B room by dividing plate, and the first casing is provided with medium inlet and media outlet, and A room connects with medium inlet, and B room connects with media outlet;Described second box house is provided with C room, and A room passes sequentially through heat exchanger tube connect with C room, B room;Described smoke-intake pipe road is obliquely installed, and one end that smoke-intake pipe road is connected with smoke inlet is less than the other end in smoke-intake pipe road.
Technical scheme also has: described smoke-intake pipe road gradient with respect to the horizontal plane is 10 ° ~ 35 °.
Technical scheme also has: described tower body inwall is provided with gear cap, and described gear cap is positioned at the Shang Yanchu of smoke inlet.Use the technical program, can to a certain degree stop desulfurizing agent to enter smoke-intake pipe road.
Technical scheme also has: described heat exchanger tube includes that outer tube and inner tube, described outer coaxial tube are sheathed on inner tube outside and there is space at interval, and one end of inner tube is closed, and the anchor ring between the other end and the outer tube of inner tube is closed, and the periphery of inner tube is provided with spurt hole.Using the technical program, for gas as heat transferring medium, gas is sprayed onto outer tube wall at a high speed by spurt hole after entering inner tube, under the percussion of air-flow, make the laminar boundary layer turbulent flow between high-temperature flue gas and outer pipe surface, enhance convection heat transfer' heat-transfer by convection, improve heat exchange efficiency.
Technical scheme also has: the layout density of described spurt hole is gradually increased along the upper end of inner tube to the lower end of inner tube.Use the technical program, the jet stream of gas amount in downstream can be increased, thus strengthen the heat exchange in heat exchanger tube downstream.
Technical scheme also has: the two ends of described heat exchanger tube are provided with flange connector, and described flange connector two opposite side walls with smoke-intake pipe road respectively is welded and fixed.
Technical scheme also has: the bottom of described tower body is connected with oxidation fan, and oxidation fan, for blasting air bottom tower body, makes CaSO3 be oxidized to CaSO4.
Technical scheme also has: the bottom of described tower body is provided with multiple screw propeller.Using the technical program, screw propeller promotes suspension flowing bottom tower body, on the one hand makes CaSO3 fully contact with oxygen, on the other hand improves the mobility of suspension, it is simple to discharged by suspension.
The operation principle of the present invention: flue gas enters tower body by smoke-intake pipe road, and meanwhile, medium passes sequentially through A room, heat exchanger tube, C room and B room, carries out heat convection with flue gas.Flue gas after heat exchange and the reactive desulfurizing agent under spray equipment sprinkling, discharged by exhaust opening.Fall into bottom tower body after desulfurizing agent and smoke reaction, generate Gypsum Fibrosum with oxygen reaction.
Relative to prior art, the invention have the benefit that (1) heat exchanger tube plays the effect supporting smoke-intake pipe road, it is possible to prevent smoke-intake pipe road deformed damaged;(2) desulfurizing agent entered in smoke-intake pipe road will not quickly dry out and be attached on heat exchanger tube, thus ensures being fully contacted of desulfurizing agent and flue gas, raising desulfuration efficiency;(3) enter the desulfurizing agent in smoke-intake pipe road and Gypsum Fibrosum will not quickly solidify in dehydration, there is good mobility, it is possible to flow down along smoke-intake pipe road, thus prevent smoke-intake pipe road from blocking, it is ensured that equipment is properly functioning;(4) waste heat in flue gas can be recycled, environmental protection and energy saving, and owing to heat exchange stroke is big, heat convection makes heat exchange efficiency higher.
Accompanying drawing explanation
Fig. 1 is the structural representation of white clay method fume desulfurizing tower.
Fig. 2 is the partial enlarged drawing in Figure 1A portion.
Fig. 3 be along Figure 1B to view.
Fig. 4 is the structural representation of heat exchanger tube.
In figure: 1, tower body, 2, smoke inlet, 3, exhaust opening, 4, spray equipment, 5, smoke-intake pipe road, the 6, first casing, the 7, second casing, 8, heat exchanger tube, 9, dividing plate, 10, A room, 11, B room, 12, medium inlet, 13, media outlet, 14, C room, 15, gear cap, 16, outer tube, 17, inner tube, 18, spurt hole, 19, flange connector, 20, oxidation fan, 21, screw propeller.
Detailed description of the invention
For the technical characterstic of this programme can be clearly described, below according to accompanying drawing, the specific embodiment of the invention is described further.
As shown in Fig. 1 ~ Fig. 4, a kind of white clay method fume desulfurizing tower, including tower body 1, the cross section of tower body 1 is rectangle, and tower body 1 is provided with smoke inlet 2 and exhaust opening 3, is provided with spray equipment 4 in tower body, tower body 1 inwall is provided with gear cap 15, and gear cap 15 is positioned at the Shang Yanchu of smoke inlet 2.
The bottom of tower body 1 is connected with oxidation fan 20.In the bottom of tower body 1, being respectively provided with a screw propeller 21 on the left of each sidewall of tower body, as seen in Figure 3, four screw propellers 21 can make the suspension within tower body 1 form annularly flow.
Smoke inlet 2 is connected with smoke-intake pipe road 5, and the cross section in smoke-intake pipe road 5 is rectangle, is respectively equipped with the first casing 6 and the second casing 7 outside the two opposite side walls in smoke-intake pipe road 5, and the inside in smoke-intake pipe road 6 is provided with heat exchanger tube 8.First casing 6 is internal is divided into room 11, A room 10 and B by dividing plate 9, and the first casing 6 is provided with medium inlet 12 and media outlet 13, and A room 10 connects with medium inlet 12, and B room 11 connects with media outlet 13.Second casing 7 is internal is provided with C room 14, and A room 10 passes sequentially through heat exchanger tube 8 connect with C room 14, B room 11, and the two ends of heat exchanger tube 8 are provided with flange connector 19, and flange connector 19 two opposite side walls with smoke-intake pipe road 5 respectively is welded and fixed.Smoke-intake pipe road 5 is obliquely installed, and institute's smoke-intake pipe road 5 gradient with respect to the horizontal plane is 30 °, and one end that smoke-intake pipe road 5 is connected with smoke inlet 2 is less than the other end in smoke-intake pipe road 5.
Heat exchanger tube 8 includes outer tube 16 and inner tube 17, outer tube 16 coaxial sleeve is located at inner tube 17 outside and there is space at interval, one end of inner tube 17 is closed, anchor ring between the other end and the outer tube 16 of inner tube 17 is closed, the periphery of inner tube 17 is provided with spurt hole 18, and the layout density of spurt hole 18 is gradually increased along the upper end of inner tube 17 to the lower end of inner tube 17.
The operation principle of the present invention: flue gas enters tower body 1 by smoke-intake pipe road 5, and meanwhile, medium passes sequentially through A room 10, heat exchanger tube 8, room 11, C room 14 and B, carries out heat convection with flue gas.Flue gas after heat exchange and the reactive desulfurizing agent under spray equipment 4 sprinkling, discharged by exhaust opening 3.Fall into bottom tower body 1 after desulfurizing agent and smoke reaction, generate Gypsum Fibrosum with oxygen reaction.
Above in conjunction with accompanying drawing, embodiments of the invention are elaborated, but the present invention is not limited to above-described embodiment, in the ken that those of ordinary skill in the art are possessed, it is also possible to make a variety of changes on the premise of without departing from present inventive concept.

Claims (8)

1. a white clay method fume desulfurizing tower, including tower body (1), described tower body (1) is provided with smoke inlet (2) and exhaust opening (3), spray equipment (4) it is provided with in tower body, it is characterized in that: described smoke inlet (2) is connected with smoke-intake pipe road (5), the cross section of described smoke-intake pipe road (5) is rectangle, is respectively equipped with the first casing (6) and the second casing (7) outside the two opposite side walls of smoke-intake pipe road (5), and the inside of smoke-intake pipe road (6) is provided with heat exchanger tube (8);Described first casing (6) is internal is divided into A room (10) and B room (11) by dividing plate (9), first casing (6) is provided with medium inlet (12) and media outlet (13), A room (10) connects with medium inlet (12), and B room (11) connect with media outlet (13);Described second casing (7) is internal is provided with C room (14), A room (10) passes sequentially through heat exchanger tube (8) connect with C room (14), B room (11);Described smoke-intake pipe road (5) is obliquely installed, and one end that smoke-intake pipe road (5) are connected with smoke inlet (2) is less than the other end in smoke-intake pipe road (5).
White clay method fume desulfurizing tower the most according to claim 1, it is characterised in that: described smoke-intake pipe road (5) gradient with respect to the horizontal plane is 10 ° ~ 35 °.
White clay method fume desulfurizing tower the most according to claim 1, it is characterised in that: described tower body (1) inwall is provided with gear cap (15), and described gear cap (15) is positioned at the Shang Yanchu of smoke inlet (2).
4. according to the arbitrary described white clay method fume desulfurizing tower of claim 1 ~ 3, it is characterized in that: described heat exchanger tube (8) includes outer tube (16) and inner tube (17), described outer tube (16) coaxial sleeve is located at inner tube (17) outside and there is space at interval, one end of inner tube (17) is closed, anchor ring between the other end and the outer tube (16) of inner tube (17) is closed, and the periphery of inner tube (17) is provided with spurt hole (18).
White clay method fume desulfurizing tower the most according to claim 4, it is characterised in that: the layout density of described spurt hole (18) is gradually increased along the upper end of inner tube (17) to the lower end of inner tube (17).
6. according to the arbitrary described white clay method fume desulfurizing tower of claim 1 ~ 3, it is characterised in that: the two ends of described heat exchanger tube (8) are provided with flange connector (19), and described flange connector (19) two opposite side walls with smoke-intake pipe road (5) respectively is welded and fixed.
7. according to the arbitrary described white clay method fume desulfurizing tower of claim 1,2,3,5, it is characterised in that: the bottom of described tower body (1) is connected with oxidation fan (20).
White clay method fume desulfurizing tower the most according to claim 7, it is characterised in that: the bottom of described tower body (1) is provided with multiple screw propeller (21).
CN201610515148.8A 2016-07-04 2016-07-04 A kind of white clay method fume desulfurizing tower Active CN105920993B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107648960A (en) * 2017-10-25 2018-02-02 安徽华创环保设备科技有限公司 A kind of rinsing type emission-control equipment
CN111072091A (en) * 2020-01-19 2020-04-28 济南山源环保科技有限公司 System and method for treating desulfurization wastewater by using flue gas waste heat

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2733290Y (en) * 2004-08-11 2005-10-12 苏存章 Multiple tube pass horizontal column tube type heat exchanger for aluminium smelting furnace
CN102654330A (en) * 2012-06-06 2012-09-05 顺德职业技术学院 Coupled evaporative condenser used for cascade heat pump hot water machine
JP2014161779A (en) * 2013-02-22 2014-09-08 Mitsubishi Heavy Ind Ltd Carrying-in system and method for denitration pack for exhaust heat recovery boiler, and exhaust heat recovery boiler
CN104236331A (en) * 2013-06-06 2014-12-24 浙江德谦节能科技有限公司 Shell and tube type jet fin air heat exchanger
CN204582953U (en) * 2015-05-11 2015-08-26 武汉凯迪电力环保有限公司 A kind of energy-saving desulfuration device that simultaneously can remove multiple pollutant
CN205796940U (en) * 2016-07-04 2016-12-14 山东太阳纸业股份有限公司 A kind of white clay method fume desulfurizing tower

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2733290Y (en) * 2004-08-11 2005-10-12 苏存章 Multiple tube pass horizontal column tube type heat exchanger for aluminium smelting furnace
CN102654330A (en) * 2012-06-06 2012-09-05 顺德职业技术学院 Coupled evaporative condenser used for cascade heat pump hot water machine
JP2014161779A (en) * 2013-02-22 2014-09-08 Mitsubishi Heavy Ind Ltd Carrying-in system and method for denitration pack for exhaust heat recovery boiler, and exhaust heat recovery boiler
CN104236331A (en) * 2013-06-06 2014-12-24 浙江德谦节能科技有限公司 Shell and tube type jet fin air heat exchanger
CN204582953U (en) * 2015-05-11 2015-08-26 武汉凯迪电力环保有限公司 A kind of energy-saving desulfuration device that simultaneously can remove multiple pollutant
CN205796940U (en) * 2016-07-04 2016-12-14 山东太阳纸业股份有限公司 A kind of white clay method fume desulfurizing tower

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107648960A (en) * 2017-10-25 2018-02-02 安徽华创环保设备科技有限公司 A kind of rinsing type emission-control equipment
CN111072091A (en) * 2020-01-19 2020-04-28 济南山源环保科技有限公司 System and method for treating desulfurization wastewater by using flue gas waste heat

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