CN2555914Y

CN2555914Y - Self heating combined flue gas desulfurization and dust removing device

Info

Publication number: CN2555914Y
Application number: CN 02273428
Authority: CN
Inventors: 樊金鑫; 夏明清
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-06-13
Filing date: 2002-06-13
Publication date: 2003-06-18
Anticipated expiration: 2012-06-13

Abstract

The utility model relates to a self heating combined flue gas desulfurization and dust removing device including a flue gas inlet, a flue gas outlet, unit towers, a liquid column nozzle and a heat pipe type heat exchanger. The unit towers are arranged at two sides and the heat pipe type heat exchanger is arranged in the middle. The unit towers are a center flow stabilizing column, a multi-layer rotational flow column plate and a homocentric baffle type gas-liquid separator. As adopting the unit tower combination, the utility model has the advantages of good combination performance, approach block loss of each unit tower and uniform airflow distribution. The heat pipe type heat exchanger is arranged in the middle to cool the flue gas in the inlet and heat the flue gas in the outlet so as to ensure flue gas of the system free of dew, reduce corrosion phenomenon and save energy. The top part of the unit towers are provided with a concentric baffle type liquid-gas separator to ensure the flue gas after leaving the towers free of hydrosphere drop. The utility model is integrated with multi-functions of desulfurization, dust removing, reheating and liquid-gas separating and has the advantages of easy arrangement, small land occupying, primary investment saving and being suitable for flue gas desulfurization and dust removing system of large flue gas generated by various coal burning furnaces.

Description

Self-heating combination type flue gas desulfurization cleaner

Technical field

The utility model relates to a kind of large-scale coal-fired furnace kiln flue gas desulfurization and dedusting equipment---self-heating combination type flue gas desulfurization cleaner that is applied to.

Background technology

Contain dust, SO behind the coal combustion in the discharged flue gas ₂Etc. harmful substance, contaminated environment, for reducing pollution to environment, desulfurating dust-removing equipment is installed on smoke evacuation system, present sulfur method has dry method, semidry method and Wet technique and corresponding apparatus, Wet-type desulfurize and dust removing device efficiency height, but Wet-type desulfurize and dust removing is owing to contact with water, and flue-gas temperature reduces, moisture height in the flue gas, easy dewing corrosion follow-up equipment and pipeline, the big flue gas that influences of flue gas severe spreads.

Summary of the invention

The purpose of this utility model provides a kind of self-heating combination type flue gas desulfurization cleaner with dedusting, desulfurization, flue gas reheat, gas-liquid separating function.

The purpose of this utility model is achieved in that

A kind of self-heating combination type flue gas desulfurization cleaner, comprise smoke inlet, exhanst gas outlet, unit tower, fluid column nozzle, heat pipe heat exchanger unit, unit tower is distributed in both sides, the centre is provided with heat pipe heat exchanger unit, the heat pipe heat exchanger unit bottom is an evaporating area, top is condensing zone, and the centre separates with dividing plate; Smoke inlet is connected with the bottom evaporating area, and flue gas advances unit tower at bottom evaporating area bottom tapping tangent line, is provided with the fluid column nozzle in the unit tower porch; Exhanst gas outlet is connected with the top condensing zone, and flue gas tangentially flows out unit tower and enters condensing zone interflow, top, and discharge from exhanst gas outlet the back, interflow.

Above-mentioned self-heating combination type flue gas desulfurization cleaner, on same axis, flue gas passes in and out unit tower by the fluid rule with journey to unit tower into and out of the air port.

Above-mentioned self-heating combination type flue gas desulfurization cleaner, unit tower are divided into central steady flow column, multi-layer rotational flow column plate, concentric baffle-type gas-liquid separation device from bottom to top.

Above-mentioned self-heating combination type flue gas desulfurization cleaner, the column plate gas-liquid separation device is made up of multilayer concentric circular tower plate with one heart, and collecting tank is arranged at the column plate bottom with one heart, and the column plate center is the equal fluidization tower in center with one heart, and collecting tank and center current-sharing intercolumniation are provided with communicating pipe.

Above-mentioned self-heating combination type flue gas desulfurization cleaner, tower body building enclosure adopt composite to make, and the composite outer wall is steel, and inside is lined with polymer composite, and two kinds of storerooms are bonding with high-temp glue.

Benefit of the present utility model is:

The combination of employing unit tower, it is good to integrate performance, and unit tower is distributed in whole tower both sides, the middle dividing plate that adopts, the flue gas reversed return type is into and out of each unit tower, and resistance is decreased close, and air-flow is evenly distributed.The intermediate arrangement heat pipe heat exchanger unit utilizes the flue gas reheat after the heat that enters flue gas will be lowered the temperature, and guarantees not dewfall of system, flue gas, and the mitigate corrosion phenomenon is saved the energy.Enter flue gas in heat pipe evaporation side heat release cooling, enter the dissolving that is beneficial to sulfur dioxide behind the desulfurization unit tower and absorb.Utilize the high-efficiency cyclone column plate to carry out desulfurization, dedusting in the unit tower, be provided with concentric baffle-type high efficiency air liquid separation device at top of tower, the flue gas of guaranteeing behind the tower is not with the aqueous vapor drop.Globality is strong, and collection desulfurization, dedusting, heat, the multiple function of gas-liquid separation are one again, are easy to arrange that floor space is little, and initial cost is economized, and is applicable to the desulfurization dust-removal system of the big exhaust gas volumn that all kinds of coal-fired furnace kilns produce.

Description of drawings

Fig. 1 the utility model floor plan

Fig. 2 the utility model 1-1 profile

Fig. 3 the utility model 2-2 profile

Fig. 4 A point enlarged drawing

The specific embodiment

Below in conjunction with accompanying drawing the utility model is described in detail:

As shown in the figure, a kind of self-heating combination type flue gas desulfurization cleaner, comprise smoke inlet 1, exhanst gas outlet 4, unit tower 2, fluid column nozzle, heat pipe heat exchanger unit 3, unit tower 2 is distributed in both sides, and the centre is provided with heat pipe heat exchanger unit 3, and heat pipe heat exchanger unit 3 bottoms are evaporating area, top is condensing zone, the centre separates up and down with dividing plate 9, and central dividing plate 9 is the flue demarcation strip, also is the heat exchange dividing plate of heat pipe heat exchanger unit; Smoke inlet 1 is connected with the bottom evaporating area, and flue gas advances unit tower 2 at bottom evaporating area bottom tapping tangent line, is provided with fluid column nozzle 5 in unit tower 2 porch; Exhanst gas outlet 4 is connected with the top condensing zone, and flue gas tangentially flows out unit tower 2 and enters condensing zone interflow, top, and discharge from exhanst gas outlet the back, interflow.

Unit tower 2 is distributed in combination dust-removal and desulfurizing equipment both sides, according to the actual condition exhaust gas volumn, determining unit tower 2 quantity, exhaust gas volumn from small to large, unit tower 2 numbers form series of combination dust-removal and desulfurizing equipment from less to more; On same axis, flue gas passes in and out unit tower by the fluid rule with journey to unit tower 2 into and out of the air port, and resistance is decreased close, and air-flow is evenly distributed.Unit tower 2 porch fluid column nozzles 5 ejection atomized drops; Drop after flue gas and the atomizing carries out the mass transfer heat exchange and further lowers the temperature, and the grit surface in flue gas has formed one deck liquid film simultaneously, and the grit surface adhesion is strengthened, and quality increases, and is beneficial to polymerization.

Unit tower 2 is divided into central steady flow column 6, multi-layer rotational flow column plate 7, concentric column plate type gas-liquid separation device 8 from bottom to top.The air inlet that the flue gas that has a drop rotates at a high speed from unit tower 2 bottoms successively from bottom to top enters circular cell tower cylindrical shell, and bulky grain enters and is thrown toward the tower wall after the unit tower under centrifugal action and removes after the polymerization.When flue gas rises around central steady flow column 6 spirals, run into the hollow water curtain that comes out from water-distributing device large tracts of land rotary spray, form the air film absorbing state at multi-layer rotational flow column plate 7 places, gas, liquid carries out violent mass transfer, having very big surface area contacted dirt karyolymph in the flue gas drips, at heating power, inertia force, under the comprehensive function of liquid surface viscous power, Gu, between liquid, between solid particle, liquid dirt is internuclear to run foul of each other, absorption, be combined into larger particles with fixed attention, under centrifugal action, get rid of Xiang Tabi, formation is along the pendular ring of tower wall rotation, gravitate and along flowing in the collecting tank under the wall, form moisture film by overflow pipe to the hypomere tower, further adsorb grit and sulfur dioxide in the rising flue gas.After dust-laden liquid enters circulating sedimentation tank from the water seal of tower body bottom along chute, enter next circulation.Because it is all gapped between fluid molecule, proportion in the flue gas is little, the big fine grit of decentralization from the bonding layer purifier water smoke and moisture film in overflow after, enter in the multilayer purifier again coalescence step by step, be captured, separate after strengthening particle diameter and quality, thereby obtain higher efficiency of dust collection.

Column plate gas-liquid separation device 8 is made up of multilayer concentric circular tower plate with one heart, and collecting tank 10 is arranged at the column plate bottom with one heart, and the column plate center is the equal fluidization tower 11 in center with one heart, and 11 of the equal fluidization towers in collecting tank 10 and center are provided with communicating pipe 12.Air-flow is when moving on the concentric conduit screw, because action of centrifugal force, the droplet in the flue gas produces outside radial displacement, and these drops are just run into behind the concentric column plate and are captured and form liquid film and flow to downwards in the concentric column plate bottom collecting tank 10 along wall.11 of the equal fluidization towers in collecting tank 10 and center are provided with communicating pipe 12, and communicating pipe 12 had both been played the supporting role of concentric column plate, the liquid in the collecting tank 10 are imported to concentrate in the equal fluidization tower 11 again to discharge.All fluidization tower 11 is provided with the external water source contact, regularly sends into press water, the sediment in the backwash collecting tank 10.Flue gas rises along collecting tank 10 upper end air inlet rotations, makes the collecting tank 10 local negative pressuren zones that form, and liquid that can not is by reentrainment.Outside step by step tray increases the multilayer concentric plate height from the center of circle, and centrifugal force outwards successively decreases from the center of circle successively, near center of circle side, centrifugal force is big, and plate height is low, and is little near outside centrifugal force, the plate height height makes flue gas that higher gas-liquid separation effect all be arranged to the outside from the center of circle.The multilayer concentric column plate is divided into the multilayer air-flow with flue gas, has shortened drop and has arrived the radial displacement distance of wall, thereby obtained higher gas-liquid separation efficient.

Middle heat pipe heat exchanger unit 3 separates up and down with dividing plate 9, and the branch bottom is an evaporating area, and top is condensing zone; Central dividing plate 9 also separates out shunting zone and interflow simultaneously.Flue gas enters the bottom evaporating area from inlet, with the heat pipe heating, emits heat, reduces temperature.Bottom heat exchange meson heat absorption evaporation rises and floats to heat pipe top in the heat pipe.The low-temperature flue gas that flows out from unit tower outlet absorbs the heat energy that heat pipe emits and the rising temperature prevents dewfall in system at the top condensing zone, causes corrosion, is beneficial to high altitude discharge simultaneously.The heat pipe internal upper part heat exchange meson gravity flow product heat cal rod bottom that is condensed enters next working cycles.Purifying the back flue gas reheat is to finish in combined column, makes combined column integrate performance and strengthens.The heat again of discharging flue gas is to utilize self heat energy that enters flue gas, does not have external heat source, the saving energy.Enter the reduction of cigarette temperature, provide technical guarantee for flue gas enters the sulfur dioxide that liquid distribution removes wherein, it is low more to enter flue-gas temperature, and the solubility of sulfur in smoke in the aqueous solution is high more.

Be equipped with oriented nozzle at rotating stream tray 7, collecting tank 10, heat pipe heat exchanger unit 9 places, the dust of periodic flushing surface bonding is guaranteed each parts high efficient and reliable ground work.

The utility model tower body building enclosure adopts composite to make.The composite outer wall is general steel, and inside is lined with polymer composite.Two kinds of storerooms are bonding with autocratic high-temp glue.Polymer composite has good heatproof, wear-resisting, corrosion resistant and mechanical property, long service life.

The desulfurization of the utility model collection, dedusting, flue gas reheat, the multiple function of gas-liquid separation are one, and the equipment conformability is strong, save the energy, are beneficial to factory and make, and are convenient to construction and installation, as required, and multiple combination.

Claims

1. self-heating combination type flue gas desulfurization cleaner, it is characterized in that: comprise smoke inlet, exhanst gas outlet, unit tower, fluid column nozzle, heat pipe heat exchanger unit, unit tower is distributed in both sides, the centre is provided with heat pipe heat exchanger unit, the heat pipe heat exchanger unit bottom is an evaporating area, top is condensing zone, and the centre separates with dividing plate; Smoke inlet is connected with the bottom evaporating area, and flue gas advances unit tower at bottom evaporating area bottom tapping tangent line, is provided with the fluid column nozzle in the unit tower porch; Exhanst gas outlet is connected with the top condensing zone, and flue gas tangentially flows out unit tower, and to enter top be condensing zone interflow, and discharge from exhanst gas outlet the back, interflow.

2. self-heating combination type flue gas desulfurization cleaner according to claim 1 is characterized in that: on same axis, flue gas connects the fluid rule and passes in and out unit tower with journey unit tower into and out of the air port.

3. self-heating combination type flue gas desulfurization cleaner according to claim 1 is characterized in that: unit tower is divided into central steady flow column, multi-layer rotational flow column plate, concentric baffle-type gas-liquid separation device from bottom to top.

4. self-heating combination type flue gas desulfurization cleaner according to claim 3, it is characterized in that: the column plate gas-liquid separation device is made up of multilayer concentric circular tower plate with one heart, collecting tank is arranged at the column plate bottom with one heart, and the column plate center is the equal fluidization tower in center with one heart, and collecting tank and center current-sharing intercolumniation are provided with communicating pipe.

5. self-heating combination type flue gas desulfurization cleaner according to claim 1 is characterized in that: the tower body building enclosure adopts composite to make, and the composite outer wall is steel, and inside is lined with polymer composite, and two kinds of storerooms are bonding with high-temp glue.