CN201191003Y - Multilevel suction wet desulphurization and denitrification dust remover - Google Patents

Abstract

The utility model relates to a boiler multistage suction wet desulfurization denitrification dust cleaner, in particular to a modified device for removing sulfur dioxide, nitrogen dioxide and dust in smoke via a boiler multistage suction wet method, wherein the inner upper part of a desulfurizer is provided with a four-stage desulfurization atomizer, a three-stage desulfurization dust cleaner and a three-stage liquid return pipe, the middle lower part in the desulfurizer is provided with a three-stage desulfurization dust cleaner, a three-stage liquid return pipe and a temperature controller, the inner wall of the desulfurizer is made from graphite or silicon carbide and ceramic materials, a large diameter nozzle adopts a helical nozzle or a spiral shell nozzle, a liquid tube on a first liquid pump is communicated with a sedimentation tank and a reaction tank, the four-stage desulfurizer atomizer and a four-stage liquid supply pump are communicated with the reaction tank, the reaction tank is provided with soda-lime mixture, a water level control valve and a mixer. The boiler multistage suction wet desulfurization denitrification dust cleaner has simple structure, high wet desulfurization denitrification dust removal efficiency, zero pollution discharge, low device investment, long service life, small volume, simple installment and maintenance, and wide application for various industry boilers.

Description

The boiler multilevel inhalation wet desulphurization denitrification dedusting device

Technical field:

The utility model relates to a kind of boiler multilevel inhalation wet desulphurization denitrification dedusting device, and particularly boiler multilevel sucks the improved equipment that wet method removes sulfur dioxide and nitrogen dioxide and flue gas ash removal.

Background technology:

At present, a lot of according to the flue gas desulfurization device of Germany and the research of various countries such as U.S., above kind more than 100, wherein the carrying out that has intermediate experiment, the laboratory research stage that also is in that has, really can be applied in the industrial production have only ten surplus kind.Most dry desulfurization devices that adopt, also there is minority to adopt the wet desulphurization device, but effect is undesirable, multiple such as spray process devulcanizer, splashing type devulcanizer etc., its desulfurization degree is all too low, uses one or more standard that also is difficult to reach environmental protection, and also extra-high-speed of investment cost, also very unrestrained useless, uncontrollable to the control of raw material.

Summary of the invention:

The purpose of this utility model, provide a kind of boiler multilevel inhalation wet desulphurization denitrification dedusting device, it is to adopt level Four desulfurization removing nitric deduster, improve desulfurization dust-removing efficiency, strengthen the diffusion of control pollutant, reduce the visibility of plume, avoid chimney landing drop, saved the waste of raw material, reduced equipment operating cost, reached and pollute zero discharging; Make whole shockproof running gear need not maintenance, the equipment process-cycle is short, and package unit adaptability is good, and no scale formation stops up with nothing.

The utility model boiler multilevel inhalation wet desulphurization denitrification dedusting device takes following technical scheme to realize, it is to be made of boiler and desulfurizing tower and chimney, the desulfurizing tower internal upper part is provided with flue gas disperser and major diameter nozzle and emptying flue gas heater and the nitrogenous tester of flue gas sulfur-bearing, the desulfurizing tower internal upper part is provided with level Four desulfurization sprayer and three grades of desulfurizing dust-collectors and three grades of liquid back pipes, the middle and lower part is provided with three grades of desulfurizing dust-collectors and three grades of liquid back pipes and temperature controller and secondary smoke exhaust pipe in the desulfurizing tower, one end of first grade desulfurizing denitrification dedusting device connects many major diameter nozzles, the other end connects the level liquid pump, the desulfurizing tower inwall is made of graphite or carborundum and ceramic material, the major diameter nozzle adopts spiral nozzle or Scroll nozzle arrangements form, and liquid line is communicated with sedimentation basin and reaction tank on the level liquid pump; Three grades of liquid back pipes and temperature controller are set on three grades of desulfurizing dust-collectors, liquid in the major diameter nozzle box is back in the sedimentation basin by the secondary liquid back pipe, be communicated with by the secondary smoke exhaust pipe in the major diameter nozzle box with between three grades of desulfurizing dust-collectors, three grades of desulfurizing dust-collector bottom tube connectors are communicated with sedimentation basin and reaction tank, level Four desulfurization sprayer and level Four solution feed pump connected reaction pond, connect hutch water device and charger and level Four solution feed pump on the reaction tank, connect altitude valve on the hutch water device, connect agitator on the motor, connect mother liquor tank on the charger, be provided with sodium calcium intermixture and altitude valve and agitator in the reaction tank, desulfurizing tower both sides reaction tank and sedimentation basin are interconnected; Connect level liquid pump and doctor solution recovery pump on the reaction tank, doctor solution reclaims and connects cyclone separator and filter and centrifuge on the pump, and drier is communicated with the waste recovery device, and filter and vacuum tank are connected with the vacuum machine, on the vacuum machine separator are set.It is indoor that sedimentation basin is communicated with desulfurization nozzle by the secondary liquid back pipe, connects laser sediment tester and automatic mud scraper and mud recover on the sedimentation basin.Boiler is communicated with by flue with desulfurizing tower, after the dedusting of flue gas process level Four desulfurization removing nitric, is discharged by blower fan and chimney by flue.

The effect of the utility model boiler multilevel inhalation wet desulphurization denitrification dedusting device is simple in structure, wet desulphurization denitrification dedusting efficient height, the environmental pollution zero-emission, equipment investment is low, long service life, occupation area of equipment is little, and installation and maintenance are convenient, is widely used in the supporting wet desulphurization denitrification dedusting equipment of various Industrial Boilers.

Description of drawings:

The utility model boiler multilevel inhalation wet desulphurization denitrification dedusting device will describe in further detail in conjunction with the accompanying drawings.

Accompanying drawing is the structural representation of the utility model boiler multilevel inhalation wet desulphurization denitrification dedusting device.

The specific embodiment:

With reference to accompanying drawing, the utility model boiler multilevel inhalation wet desulphurization denitrification dedusting device, it is to be made of with chimney 15 boiler 1 and desulfurizing tower 4, desulfurizing tower 4 internal upper parts are provided with flue gas disperser 5 and major diameter nozzle 6 and emptying flue gas heater 7 and the nitrogenous tester 8 of flue gas sulfur-bearing, desulfurizing tower 4 internal upper parts are provided with level Four desulfurization sprayer 11 and three grades of desulfurizing dust-collectors 9 and three grades of liquid back pipes 12, middle and lower parts are provided with three grades of desulfurizing dust-collectors 9 and three grades of liquid back pipes 12 and temperature controller 13 and secondary smoke exhaust pipe 24 in the desulfurizing tower 4, one end of first grade desulfurizing denitrification dedusting device 3 connects many major diameter nozzles 6, the other end connects level liquid pump 29, desulfurizing tower 4 inwalls are made of graphite or carborundum and ceramic material, major diameter nozzle 6 adopts spiral nozzle or Scroll nozzle arrangements form, and liquid line is communicated with sedimentation basin 26 and reaction tank 30 on the level liquid pump 29; Three grades of liquid back pipes 12 and temperature controller 13 are set on three grades of desulfurizing dust-collectors 9, major diameter nozzle 6 indoor liquid are back in the sedimentation basin 26 by secondary liquid back pipe 24, major diameter nozzle 6 indoor with three grades of desulfurizing dust-collectors 9 between be communicated with by secondary smoke exhaust pipe 16, three grades of desulfurizing dust-collector 9 bottom tube connectors are communicated with sedimentation basin 26 and reaction tank 30, level Four desulfurization sprayer 11 and level Four solution feed pump 23 connected reaction ponds 30, connect hutch water device 19 and charger 18 and level Four solution feed pump 23 on the reaction tank 30, connect altitude valve 20 on the hutch water device 19, connect agitator 22 on the motor, connect mother liquor tank 17 on the charger 18, be provided with sodium calcium intermixture 21 and altitude valve 20 and agitator 22 in the reaction tank 30, desulfurizing tower 4 both sides reaction tanks 30 are interconnected with sedimentation basin 26; Connect level liquid pump 29 on the reaction tank 30 and reclaim pump 31 with doctor solution, doctor solution reclaims and connects cyclone separator 39 and filter 38 and centrifuge 34 on the pump 31, drier 33 is communicated with waste recovery device 32, filter 38 and vacuum tank 35 are connected with vacuum machine 36, and separator 37 is set on the vacuum machine 36.It is indoor that sedimentation basin 26 is communicated with desulfurization nozzle by secondary liquid back pipe 24, connects laser sediment tester 25 and automatic mud scraper 27 and mud recover 28 on the sedimentation basin 26.Boiler 1 is communicated with by flue 2 with desulfurizing tower 4, after the dedusting of flue gas process level Four desulfurization removing nitric, is discharged by blower fan 14 and chimney 15 by flue 10.

The embodiment of the utility model boiler multilevel inhalation wet desulphurization denitrification dedusting device, flue gas is come out through flue 2 directly in desulfurizing tower 4 from boiler 1, utilize liquid pump 29 that the liquid in the reaction tank 30 is delivered to first grade desulfurizing denitrification dedusting device 3, adopt reverse spraying, increase the soak time of liquid and gas, increase double desulfuration efficiency than the direct forward method of spray commonly used, and utilize temperature controller 13 that signal is imported into automatic control system and control what of spouting liquid, thereby effectively control the absorption temperature that flue gas needs in the desulfurizing tower 4, desulfurizing tower 4 inwalls are made of graphite or carborundum and ceramic material, major diameter nozzle 6 adopts spiral nozzle or Scroll nozzle, there is not the spiral nozzle that stops up no fouling, the obstruction of the reverse spout of avoiding; Flue gas is transferred to flue gas in the opposite side desulfurization chamber through secondary smoke exhaust pipe 16 then, utilize sweetening liq to adopt the height of water level of secondary liquid back pipe 24 control secondary sweetening liqs, flue gas comes out from secondary smoke exhaust pipe 16, make flue gas once soak absorption at liquid, in the sulphur in the flue gas and nitrogen and dust 40%-50% suction liquid, in secondary liquid back pipe 24 and three grades of liquid back pipes 12 liquid backflow controller is set all, prevent that the liquid in the sedimentation basin 26 from returning hydraulic control system to liquid greatly because of blower fan 14 pressure, flue gas then is through three grades of desulfurizing dust-collectors 9, all flue gases are subdivided into countless Yan Pao to carry out a gas-liquid with three grades of doctor solutions and closely contacts absorption process, absorbing desulfurization degree reaches more than 95%, the concentration maximum of its sweetening liq, so absorptivity height, three grades of desulfurizing dust-collectors 9 are provided with the left-hand thread formula delta-transfer drum of ceramic material, the countless cigarettes that are broken under the condition in the horizontal direction that flue gas is all fair steep, pass three grades of sweetening liqs, sodium calcium mixing dosage in the liquid is controlled by level Four desulfurization sprayer 11, automatically control what of 18 pairs of level Four desulfurization of charger sprayer, 11 spouting liquids according to the nitrogenous tester of flue gas sulfur-bearing, from the desulphurization mother solution jar, with automatic liquid adding device 18 sodium calcium intermixture 21 is joined in the desulfurization soup, hutch water device 19 usefulness altitude valves 20 are controlled the height of sweetening liq, stir by 22 pairs of liquid of agitator, be transported in the level Four desulfurization sprayer 11 with level Four solution feed pump 23, to the flue gas that will discharge purification filtering desulfurization removing nitric again, the wave of solution source material in desulphurization plant is useless, reach reason because of the need confession, assurance discharges the purification standard of flue gas, be that liquid preparation concentration has been supplied in three grades of desulfurization, the flue gas desulphuization rate of discharging is more than 98%, dust removal efficiency 〉=97%, concentration of emission＜36mg/m ³Lingemann blackness＜I grade standard meets national environmental standard.Flue gas after being purified is utilized blower fan 14 to utilize flue 10 to be discharged to chimney 15 from desulfurizing tower flue gas and is discharged.Equipment is controlled the temperature of flue gases in the flue 10 by temperature controller, utilizes flue gas disperser 5 that the flue gas of high temperature is distributed in the emptying flue gas heater 7, thereby guarantees water capacity in the vent gas with being discharged to flue gases heating in the flue 10.For the liquids recovery after the desulfurization, through the sedimentation basin 26 under the reaction tank 30, adopt laser sediment tester 25 to control 27 pairs of mud of automatic mud scraper automatically and carry out the mud recovery, liquid after the absorption reaches finite concentration in reaction tank 30 after, undertaken utilizing recover to reclaim again to this raw material of sulfur-bearing liquid secondary by doctor solution recovery pump 31, cyclone separator 39, centrifuge 34, drier 33, filter 38, vacuum tank 35, vacuum machine 36, separator 37.

Claims (2)

1, a kind of boiler multilevel inhalation wet desulphurization denitrification dedusting device, it is to be made of with chimney (15) boiler (1) and desulfurizing tower (4), it is characterized in that desulfurizing tower (4) internal upper part is provided with flue gas disperser (5) and major diameter nozzle (6) and emptying flue gas heater (7) and the nitrogenous tester of flue gas sulfur-bearing (8), desulfurizing tower (4) internal upper part is provided with level Four desulfurization sprayer (11) and three grades of desulfurizing dust-collectors (9) and three grades of liquid back pipes (12), the interior middle and lower part of desulfurizing tower (4) is provided with three grades of desulfurizing dust-collectors (9) and three grades of liquid back pipes (12) and temperature controller (13) and secondary smoke exhaust pipe (16), one end of first grade desulfurizing denitrification dedusting device (3) connects many unimpeded diameter nozzle of super large (6), the other end connects level liquid pump (29), and level liquid pump (29) is gone up liquid line and is communicated with sedimentation basin (26) and reaction tank (30); Three grades of liquid back pipes (12) and temperature controller (13) are set on three grades of desulfurizing dust-collectors (9), the indoor liquid of desulfurization nozzle is back in the sedimentation basin (26) by secondary liquid back pipe (24), major diameter nozzle (6) indoor with three grades of desulfurizing dust-collectors (9) between be communicated with by secondary smoke exhaust pipe (16), three grades of desulfurizing dust-collectors (9) bottom tube connector is communicated with sedimentation basin (26) and reaction tank (30), level Four desulfurization sprayer (11) and level Four solution feed pump (23) connected reaction pond (30), reaction tank (30) is gone up and is connected hutch water device (19) and charger (18) and level Four solution feed pump (23), hutch water device (19) is gone up and is connected altitude valve (20), connect agitator (22) on the motor, charger (18) is gone up and is connected mother liquor tank (17), be provided with sodium calcium intermixture (21) and altitude valve (20) and agitator (22) in the reaction tank (30), desulfurizing tower (4) both sides reaction tanks (30) are interconnected with sedimentation basin (26); Reaction tank (30) is gone up and is connected level liquid pump (29) and doctor solution recovery pump (31), doctor solution reclaims pump (31) and goes up connection cyclone separator (39) and filter (38) and centrifuge (34), drier (33) is communicated with waste recovery device (32), filter (38) and vacuum tank (35) are connected with vacuum machine (36), and separator (37) is set on the vacuum machine (36).

2, boiler multilevel inhalation wet desulphurization denitrification dedusting device according to claim 1, it is characterized in that desulfurizing tower (4) inwall is made of graphite or carborundum and ceramic material, major diameter nozzle (6) adopts spiral nozzle or Scroll nozzle, and three grades of desulfurizing dust-collectors (9) are provided with the left-hand thread formula delta-transfer drum version of ceramic material.

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