CN101185840A - Turbine type pressure charging acceleration fuel gas desulfurization gas wash tower - Google Patents

Turbine type pressure charging acceleration fuel gas desulfurization gas wash tower Download PDF

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Publication number
CN101185840A
CN101185840A CNA2007101207076A CN200710120707A CN101185840A CN 101185840 A CN101185840 A CN 101185840A CN A2007101207076 A CNA2007101207076 A CN A2007101207076A CN 200710120707 A CN200710120707 A CN 200710120707A CN 101185840 A CN101185840 A CN 101185840A
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China
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tower
gas
pipeline
flue gas
liquid storage
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CNA2007101207076A
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Chinese (zh)
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CN100525885C (en
Inventor
张频
胡建华
崔海会
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北京紫光威肯环保工程技术有限公司
张频
胡建华
崔海会
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Priority to CNB2007101207076A priority Critical patent/CN100525885C/en
Publication of CN101185840A publication Critical patent/CN101185840A/en
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Abstract

The invention relates to a turbine typed turbocharged accelerating flue gas desulfurization dust abatement tower, belonging to the field of gas purification technique, which includes a spray pump tower body, a slurry pump that is arranged on the tower from bottom to top and is connected with a slurry outlet at the bottom of the tower, a roots blower that is connected with a fall trachea and is arranged in a liquid storage district at the bottom in the tower, a spray pump pipe arranged over the liquid storage district, a circulating pump that is connected with and arranged in a circulating pipeline communicated with the spray pump pipe, and a demister arranged on the spray pump pipe; a flue gas inlet, a flue gas outlet and a slurry outlet are arranged on the lateral wall, on the top and at the bottom of the lower part of the spray pump tower body; a disturbance pump and a turbine typed turbocharged accelerating flue gas desulfurization dust abatement system are also included, wherein, the disturbance pump is connected with and arranged in the circulating pipeline communicated with the liquid storage district at the bottom of the tower, and the desulfurization dust abatement apparatus is arranged under the spray pump pipe in the tower and over the flue gas inlet. The invention has the advantages that sufficient connection of gas and liquid can be realized and high speed mass transfer can be carried out within the shortest time, in the smallest space and with the minimum liquid-gas ratio, thus improving high dust abatement and desulfurization efficiency with minimum energy consumption.

Description

Turbine type pressure charging acceleration fuel gas desulfurization gas wash tower

Technical field

The invention belongs to the gas purification technique field, particularly boiler fume desulfurizing and dedusting device structure design.

Background technology

Wet technique in the boiler fume desulfurizing and dedusting tower has a kind of spray column with cyclone at present.This tower comprises: tower body, be provided with gas approach, exhanst gas outlet and plasma discharge mouth at this tower body, be provided with slurry pump by linking to each other, the roots blower that links to each other with aeration tube in being arranged on tower inner bottom part liquid storage area from bottom to up at this tower, be connected the circulating pump in the circulating line that communicates with the shower of this liquid storage area on, and be arranged on the demister on this shower with it with plasma discharge mouth at the bottom of the tower; Also comprise be arranged under this tower internal sparger pipe, the cyclone on the gas approach, it is mainly by blind plate, swirl vane, cover tube, overflow launder, collecting tank, compositions such as overfall, overflow pipe, special-shaped adapter.

The course of work of this boiler flue gas desulfurization cyclone is: desulfurization slurry is evenly distributed to each blade, forms thin liquid layer.When passing through blade from bottom to top, air-flow produces the centrifugal motion of rotation.Make desulfurization slurry drop in collision cohesion on the tower wall.Under the effect of gravity, be pooled to collecting tank, and flow to by overfall, overflow pipe on the blind plate of next column plate, continue to repeat said process.

There is following point in above-mentioned boiler fume desulfurizing and dedusting tower:

1, because the gas-liquid contact time on the column plate is short, so desulfuration efficiency is on the low side, is about 80%, and is not suitable for CaCO3 and makes sulphur-fixing agent.(drawing from " sulphur polluted by nitrogen Way of Engineering Technology in Control of Underground and application thereof "), Guo Dongming write, and chemical industry is published);

2, sulphur hydrocyclone structure complexity, fouling easily, and desulfuration efficiency reduces with the tower diameter increase.

3, be tangential admission, the center forms the poor efficiency district easily.

4, similar other cyclones, its blade center is a solid, enters the back at flue gas and forms rotation and form the vacuum funnel in the center with desulfurization slurry, influences desulfuration efficiency and effect.

Summary of the invention

The objective of the invention is for overcoming the weak point of prior art, a kind of turbine type pressure charging acceleration fuel gas desulfurization gas wash tower is proposed, can be implemented in the shortest time, minimum space, under the minimum liquid-gas ratio, reach gas-liquid and fully contact, carry out the high speed mass transfer, improve high dedusting, desulfuration efficiency under the least energy consumption.

The turbine type pressure charging acceleration fuel gas desulfurization gas wash tower that the present invention proposes, comprise: the spray tower body, be provided with slurry pump by linking to each other, the roots blower that links to each other with aeration tube in being arranged on tower inner bottom part liquid storage area from bottom to up at this tower with plasma discharge mouth at the bottom of the tower, be arranged on shower on this liquid storage area, be connected with circulating line that this shower communicates in circulating pump, and be arranged on demister on this shower; It is characterized in that, be provided with gas approach, exhanst gas outlet and plasma discharge mouth in this spray tower body lower sides, top and bottom; Comprise that also the disturbance pump that is connected in the circulating line that communicates with tower inner bottom part liquid storage area territory, the turbo-supercharging that is arranged under this tower internal sparger pipe, on the gas approach quicken desulfurating dust removing device for flue gas.

Described turbo-supercharging quickens desulfurating dust removing device for flue gas and specifically comprises: housing, be fixed on the pipeline at this housing center, and be installed in a plurality of blades between this housing and the pipeline, the upper end of each blade links to each other with this housing, and the lower end is connected with pipeline; The lower end of this pipeline connects one and hides petticoat pipe, in this pipeline helix(ribbon type) agitator is installed, and this helix(ribbon type) agitator is to be arranged on this ducted banded in the shape of a spiral rectangular plate.

Described liquid storage area is made of reaction tank and recycle tank, the inlet pipeline of this disturbance pump is connected with reaction tank, outlet conduit is connected with recycle tank, and several pipelines that have the nozzle at the bottom of the absorption tower are housed in recycle tank, and this pipeline links to each other with this outlet conduit.

Characteristics of the present invention and effect:

The present invention is different from existing Wet technique, not from increasing gas-liquid contact time, increase the gas-liquid attaching space, increasing liquid holdup, but, make gas-liquid at mass transfer field high speed bump, the state that formation gas phase, liquid phase are all disperseed by setting up turbulent mass transfer field, be implemented in the shortest time, minimum space under the minimum liquid-gas ratio, reaches gas-liquid and fully contacts, carry out the high speed mass transfer, improve high dedusting, desulfuration efficiency under the least energy consumption.

In turbulent mass transfer field, the specific area of liquid is compared with big tens of times of the flowing fluid ratio surface area of common spray column, reach same mass-transfer efficiency, its resistance is on the low side or approaching compared with spray column, liquid-gas ratio but reduces greatly, and the mass transfer space also reduces greatly, in existing liquid-gas mass transfer apparatus, its combination property is fitst water, and energy consumption is minimum.

Principal character parts of the present invention are that turbo-supercharging quickens desulfurating dust removing device for flue gas, be contained in the spray column, because design has helix(ribbon type) agitator in the blade central area, after flue gas enters desulfurizer, flue gas is stronger than the rotate effect that flue gas flow rate brought that blade causes with the high speed rotate effect that desulfurization slurry forms in the helix(ribbon type) agitator zone, and destroyed the vacuum funnel that the center forms, improved desulfuration efficiency.After long-time running, if stop up because of operational issue or other reasons cause helix(ribbon type) agitator, also can reach the desulfurized effect and the efficient of other desulfurizers, this just turbo-supercharging quicken the difference and the superior part of flue gas desulfurization and dedusting dress and other desulfurizers.This device can be according to the size of design exhaust gas volumn, settle at least one or more, compare with other devices have the desulfurization dust-removing efficiency height, capacity is big, stream time is long, liquid-gas ratio is little, is fit to advantages such as various desulfurizing agents.

Description of drawings

Fig. 1 is a general structure schematic diagram of the present invention.

Fig. 2 is that the turbo-supercharging among Fig. 1 quickens the desulfurating dust removing device for flue gas structural representation;

Wherein, a is main pseudosection, and b is a vertical view.

Fig. 3 is that turbo-supercharging of the present invention quickens desulfurating dust removing device for flue gas distribution embodiment schematic diagram.

The specific embodiment

A kind of turbine type pressure charging acceleration fuel gas desulfurization gas wash tower structure drawings and Examples that the present invention proposes are described in detail as follows:

General structure of the present invention as shown in Figure 1, comprise: spray tower body 1, be provided with gas approach 101, exhanst gas outlet 102 and plasma discharge mouth in this tower body lower sides, top and bottom, this tower be provided with from bottom to up slurry pump 6 by linking to each other with plasma discharge mouth at the bottom of the tower, be arranged on roots blower 4 that the tower inner bottom part links to each other with aeration tube in the liquid storage area that recycle tank constitutes by reaction tank, be connected the circulating pump 2 in the circulating line that communicates with the shower 22 of this liquid storage area on it, and be arranged on the demister 7 on this shower 22; Above-mentioned each parts and structure and existing desulfurization and dedusting column foot are originally identical, on this basis, comprise that also the disturbance pump 5 that is connected in the circulating line that communicates with tower inner bottom part liquid storage area territory, the turbo-supercharging that is arranged under this tower internal sparger pipe 22, on the gas approach 101 quicken desulfurating dust removing device for flue gas 3; This device concrete structure comprises as shown in Figure 2: housing 31, be fixed on the pipeline 34 at this housing center, and be installed in a plurality of blades 32 between this housing and the pipeline, the upper end of each blade links to each other with this housing, and the lower end is connected with pipeline; The lower end of this pipeline connects one and hides petticoat pipe 35, and helix(ribbon type) agitator 33 is installed in this pipeline, and this helix(ribbon type) agitator 33 is for being arranged on this ducted banded in the shape of a spiral rectangular plate.

A kind of turbine type pressure charging acceleration fuel gas desulfurization gas wash tower embodiment of the present invention is applied to 1 * 75t/h coal-burning boiler desulfurization and dedusting transformation project.The employing desulfurizing agent is a lime, and the calcium method is abandoned technology.

The composition of present embodiment and structure as shown in Figure 1, the capital equipment of separate unit boiler configuration comprises:

Spray column: adopting a model is WL-75 167000m 3/ h;

Circulating pump: adopt two circulating pumps that model is 200UHB-Z-168-20, a model is the circulating pump of 200UHB-Z-320-32, links to each other with the shower of differing heights;

Disturbance pump: adopt a disturbance pump that model is 200UHB-ZK-500-12;

Demister; Adopt a flow 100m 3/ h, the fresh water (FW) water supplying pump of lift 40m;

Slurry pump: adopting a model is 65UHB-ZK-III-18-20;

Roots blower: adopting a model is LSR150WJ;

Above-mentioned each equipment is conventional products.

The liquid storage area of present embodiment is made of reaction tank and recycle tank, the inlet pipeline of disturbance pump is connected with reaction tank, outlet conduit is connected with recycle tank, and several pipelines that have the nozzle at the bottom of the absorption tower are housed in recycle tank, and this pipeline links to each other with this outlet conduit.

The structure that the turbo-supercharging of present embodiment quickens desulfurating dust removing device for flue gas as shown in Figure 2, its concrete size can design according to practical application application need and the spray column of selecting for use size; Following data only as an example and provide can reference span.

The diameter of the housing that turbo-supercharging quickens desulfurating dust removing device for flue gas is generally 400-800 millimeter (for example 600 millimeters), and the pipe diameter at center is 100-200 millimeter (for example 150 millimeters); Each blade surface can be 150-180 (for example 165) radian, and its minor axis and horizontal plane angle are 28 °-45 ° (for example 35 °); Its major axis and horizontal plane angle are 20 °-50 ° (for example 45 °).The width of blade reaches 100-400 millimeter (for example 200 millimeters), two adjacent blade overlaid 0-20 millimeters (for example 10 millimeters).

The hurricane band that the rectangular plate of ducted helix(ribbon type) agitator constitutes and the angle of longitudinal axis are 20 °-30 ° (for example 28 °), and maintain the slit with inner-walls of duct, so that install.

Present embodiment has adopted 19 turbo-superchargings to quicken desulfurating dust removing device for flue gas, be symmetrically distributed as shown in Figure 3 with the center, the minimum spacing that adjacent two turbo-superchargings quicken desulfurating dust removing device for flue gas 3 is 200 millimeters, with the minimum spacing of tower body wall 1 be 200 millimeters.

Except that above-mentioned basic equipment, present embodiment also comprises:

Be provided with baffle door and adopt corresponding anti-corrosion measure at spray column and downstream flue thereof, exhanst gas outlet.

Consider the time between overhauls(TBO) of desulphurization plant, present embodiment is provided with by-pass flue, and double-deck by-pass flue baffle door is installed, and boiler still can normally move continuously when guaranteeing the desulphurization plant maintenance.

Comprise also that with the present embodiment corollary equipment pH value control that is connected with recycle tank adds CaO emulsion device, desulfurizing agent preparation system, main operation, control parameters such as pressure, temperature, flow, pH value to flue gas automatically and measures, each capital equipment running status is implemented the PLC control system monitored etc., these corollary equipments all do not belong to protection category of the present invention.

The course of work of present embodiment is described as follows:

Behind boiler smoke process sack cleaner (or electric cleaner) and the air-introduced machine, enter desulfurizing tower by the inlet flue duct baffle door, in desulfurizing tower, quicken desulfurating dust removing device for flue gas 3 by turbo-supercharging, form the high speed rotate effect with the desulfurization slurry under shower 22 sprays, make gas-liquid at high-speed impact, the state that formation gas phase, liquid phase are all disperseed, be implemented in the shortest time, minimum space under the minimum liquid-gas ratio, reaches gas-liquid and fully contacts, carry out the high speed mass transfer, improve the desulfuration efficiency under the least energy consumption.Flue gas after desulfurization is removed the water smoke of carrying secretly in the flue gas by demister 7, outlet flue gas water content<100mg/Nm 3, avoid corrosion to downstream flue and chimney.Purify flue gas and pass through the exhaust pass baffle door to smoke stack emission.

Be located in the recycle tank of tower bottom several pipes 51 that have the nozzle at the bottom of the absorption tower are housed, by disturbance pump 5 liquid is extracted out from tower reaction tank top, again return in the reaction tank by the road, when spraying, liquid just produced pulse from nozzle, rely on this impulse action can stir solids at the bottom of the tower, and then prevent to produce precipitation.Acidic cleaning liquid after the absorption sulfur dioxide in flue gas adds the alkaline slurry of CaO emulsion in groove automatically by the pH value robot control system(RCS) and mixes.Blast air and aeration tube by roots blower 4 simultaneously, the calcium sulfite complete oxidation is become calcium sulfate.

The desulfurizing tower tower bottom divides circulating absorption solution to get to the hydrocyclone thickening through slurry pump 6.A small amount of flue dust and waste residue dehydration back outward transport, the filtrate major part is returned the absorption liquid circulation, and part filtrate enters recycle tank, blasts the force air oxidation by roots blower 4, to guarantee the not having calcium sulfite complete oxidation of oxidation to become calcium sulfate.

Adopt present embodiment to purify back flue gas SO 2Content≤400mg/M 3, desulfuration efficiency 〉=95%, dust content≤50mg/M 3, efficiency of dust collection 〉=95%.Single stove year desulfurization 7410T/y.

Claims (5)

1. turbine type pressure charging acceleration fuel gas desulfurization gas wash tower, comprise: the spray tower body, be provided with slurry pump by linking to each other, the roots blower that links to each other with aeration tube in being arranged on tower inner bottom part liquid storage area from bottom to up at this tower with plasma discharge mouth at the bottom of the tower, be arranged on shower on this liquid storage area, be connected with circulating line that this shower communicates in circulating pump, and be arranged on demister on this shower; It is characterized in that, be provided with gas approach, exhanst gas outlet and plasma discharge mouth in this spray tower body lower sides, top and bottom; Comprise that also the disturbance pump that is connected in the circulating line that communicates with tower inner bottom part liquid storage area territory, the turbo-supercharging that is arranged under this tower internal sparger pipe, on the gas approach quicken desulfurating dust removing device for flue gas.
2. turbine type pressure charging acceleration fuel gas desulfurization gas wash tower as claimed in claim 1, it is characterized in that, described turbo-supercharging quickens desulfurating dust removing device for flue gas and specifically comprises: housing, be fixed on the pipeline at this housing center, be installed in a plurality of blades between this housing and the pipeline, the upper end of each blade links to each other with this housing, and the lower end is connected with pipeline; The lower end of this pipeline connects one and hides petticoat pipe, in this pipeline helix(ribbon type) agitator is installed, and this helix(ribbon type) agitator is to be arranged on this ducted banded in the shape of a spiral rectangular plate.
3. turbine type pressure charging acceleration fuel gas desulfurization gas wash tower as claimed in claim 1 or 2, it is characterized in that, described liquid storage area is made of reaction tank and recycle tank, the inlet pipeline of this disturbance pump is connected with reaction tank, outlet conduit is connected with recycle tank, and several pipelines that have the nozzle at the bottom of the absorption tower are housed in recycle tank, and this pipeline links to each other with this outlet conduit.
4. turbine type pressure charging acceleration fuel gas desulfurization gas wash tower as claimed in claim 1 is characterized in that, also is included in spray column and downstream flue thereof, exhanst gas outlet is provided with baffle door.
5. turbine type pressure charging acceleration fuel gas desulfurization gas wash tower as claimed in claim 1 is characterized in that, described tower body is installed the by-pass flue that has baffle door.
CNB2007101207076A 2007-08-24 2007-08-24 Turbine type pressure charging acceleration fuel gas desulfurization gas wash tower CN100525885C (en)

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CNB2007101207076A CN100525885C (en) 2007-08-24 2007-08-24 Turbine type pressure charging acceleration fuel gas desulfurization gas wash tower

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Application Number Priority Date Filing Date Title
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CN100525885C CN100525885C (en) 2009-08-12

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102078764A (en) * 2010-12-17 2011-06-01 秦皇岛双轮环保科技有限公司 Flue gas lime-gypsum desulfuration method for industrial furnace without chimney
CN103301705A (en) * 2013-06-06 2013-09-18 江苏新世纪江南环保股份有限公司 Device and method for controlling fine particulate matter from desulfurized smoke
CN104109898A (en) * 2014-07-08 2014-10-22 德清县浙北通讯器材有限公司 Waste gas treatment device of pickling or electroplating equipment
CN105268285A (en) * 2015-12-01 2016-01-27 苏州月辉环保科技有限公司 Efficient gas-liquid mixer for waste gas treatment
CN105797563A (en) * 2016-05-05 2016-07-27 辽宁科技学院 Venturi high-efficiency reaction desulfuration device
CN106492593A (en) * 2016-12-15 2017-03-15 攀枝花钢城集团有限公司 Fume desulfurating absorption tower

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102805999B (en) * 2012-08-23 2014-07-02 北京威肯众合环保科技有限公司 Turbulent ball type turbocharging compound desulfurization dust removal tower

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102078764A (en) * 2010-12-17 2011-06-01 秦皇岛双轮环保科技有限公司 Flue gas lime-gypsum desulfuration method for industrial furnace without chimney
CN103301705A (en) * 2013-06-06 2013-09-18 江苏新世纪江南环保股份有限公司 Device and method for controlling fine particulate matter from desulfurized smoke
CN103301705B (en) * 2013-06-06 2015-08-19 江苏新世纪江南环保股份有限公司 A kind of desulfurization fume fine particulates control device and method
CN104109898A (en) * 2014-07-08 2014-10-22 德清县浙北通讯器材有限公司 Waste gas treatment device of pickling or electroplating equipment
CN105268285A (en) * 2015-12-01 2016-01-27 苏州月辉环保科技有限公司 Efficient gas-liquid mixer for waste gas treatment
CN105797563A (en) * 2016-05-05 2016-07-27 辽宁科技学院 Venturi high-efficiency reaction desulfuration device
CN106492593A (en) * 2016-12-15 2017-03-15 攀枝花钢城集团有限公司 Fume desulfurating absorption tower

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