CN2459071Y

CN2459071Y - Desulfurating dust removing device for flue gas

Info

Publication number: CN2459071Y
Application number: CN 00268503
Authority: CN
Inventors: 许强思
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-12-28
Filing date: 2000-12-28
Publication date: 2001-11-14
Anticipated expiration: 2010-12-28

Abstract

The utility model relates to a desulfurating and dust removing device for smoke, which comprises a smoke inlet pipe, a venturi, a static reactive condenser, a separator, etc., wherein a snakelike heating pipe is arranged in the smoke inlet pipe; the smoke can be heated and washed to a superheating state, the smoke and washing liquid are mixed thoroughly and atomized, and the desulfurating and the dust removing effects are achieved. The interior of the static reactive condenser is divided into a plurality of layers of middle mixing chambers; pipelines which are mutually connected in parallel in a staggered mode at 90 DEG with 2 * 4<n> layers of dividing layer surfaces are connected between every two layers of the middle mixing chambers; desulfurating and dust removing effects can be further increased. The utility model has the advantages of reasonable design, low cost, superior performance, etc. The utility model provides a desulfurating and dust removing device for smoke with high cost performance.

Description

Desulfurating dust removing device for flue gas

The utility model relates to a kind of desulfurating dust removing device for flue gas, belongs to the environmental protection technical field of industrial flue gas cleaning, is specially adapted to fire coal, the Industrial Boiler of fuel oil and the flue gas desulfurization and dedusting of stove.

The flue gas processing device of existing Industrial Stoves has: two kinds of dry method and wet methods.The dry method device can only dedusting, can not desulfurization.The wet method device can desulfurization, dedusting, but in actual the use following deficiency is arranged, and the higher target of one, dedusting and desulfuration efficiency is difficult to realize; Two, cleaning solution does not all have the fogging degree of being heated to, and desulphurization reaction speed is slower, is difficult to abundant moistening grit.Fluid column desulfurization dust-removal system, jet bubbling desulfur technology and equipment eddy current desulfurization and dedusting washer etc. that units such as nearest Tsing-Hua University succeed in developing have their own characteristics each, but complicated operation, equipment cost is also high.And wet dedusting carries the liquid mist secretly, can only use at a lower temperature.

The purpose of this utility model is to overcome the deficiencies in the prior art, provide a kind of to the preheating of cleaning solution process, infant industry desulfurating dust removing device for flue gas through Venturi tube and static reaction condenser and separator intensive treatment, its desulfurization and dedusting are imitated higher, do not carry the liquid mist secretly, equipment manufacturing cost is cheap, and can reduce the corrosion in equipment and the pipeline.

The technical solution of the utility model, comprise smoke-intake pipe, Venturi tube, washing liquid pool, water circulating pump etc., wherein be provided with in the smoke-intake pipe and be wound in spiral helicine serpentine heating pipe, smoke-intake pipe is not held with Venturi tube and is joined, the Venturi tube lower end is connected to the static reaction condenser, and the separator that is loaded on static reaction condenser bottom inserts in the washing liquid pool.

Fig. 1 is the desulfurating dust removing device for flue gas structural representation.Fig. 2 is a static reaction condenser A-A cross-sectional view.Fig. 3 is a static reaction condenser B-B cross section face cutaway view.

Below in conjunction with accompanying drawing embodiment is described in detail:

As shown in Figure 1, be equipped with in the smoke-intake pipe 2 and be wound in spiral helicine serpentine heating pipe 3, Venturi tube 4 lower ends are connected to static reaction condenser 5, static reaction condenser 5 inside are divided into several middle mixing chambers 14, each mixes and is provided with two parallel pipelines 15 between the medial compartment 14, as shown in Figure 3 and Figure 4, every layer parallel pipeline 15 becomes 90 degree dislocation to arrange each other, inserts the spiral plate 6 of distortion in each parallel pipeline 15.Running water enters condenser 5 from import 7, flows out from exporting 8 through parallel pipeline 15 and middle mixing chamber 14 outsides.The separator 9 that is loaded on condenser 5 bottoms inserts in the cleaning solution 11.Smoke-intake pipe 2 all connects with male and fomale(M﹠F) downhand welding method between Venturi tube 4, static reaction condenser 5 and the separator 9, protects and levies assembling axiality and sealing property.

Flue gas 1 enters after the smoke-intake pipe 2, and the cleaning solution that will extract out with water circulating pump 10 from washing liquid pool 11 adds in the serpentine heating pipe 3, and is heated to superheat state.When cleaning solution during from serpentine heating pipe 3 ejection, partly the cleaning solution vaporization forms high speed aerosol stream, the trickle hydrothermal solution that forms in the aerosol stream is dripped, both very big interface can be obtained, desulphurization reaction speed can be improved again, and abundant moistening grit, also can form the two-phase high velocity air, make between water droplet and the grit, produce very big speed difference, improve inertia greatly and capture effect.These solid, liquid, gas of grit, water droplet, flue gas and water vapour (vapour) mixed flow is introduced Venturi tube 4, form turbulence state, make flue gas obtain washing and desulfurization for the first time at its trunnion place.Then the flue gas mixed flow promptly enters static reaction condenser 5, is in parallel pipeline 15 and the middle mixing chamber 5 that 90 degree dislocation are arranged through multilayer, is constantly cut apart combination, obtains 2 * 4 ⁿ(n is the parallel port number), dividing layer forms very big composite detergent network, and further reinforcing desulfuration effect and grit inertial collision obtain good hurdle and cut the capture effect.Because the design feature of static reaction condenser, its heat transfer coefficient is 7-8 a times of vacant duct, even reach more than 15 times, make the composite detergent in the flue gas of washing back obtain very fast condensation cooling, the also very fast cooling of flue gas, moistening grit is increased, improve the separating effect of gas, liquid and dust, prevent to carry secretly the liquid mist.Mixed flue gas stream enters separator 9 at last, be located at the spiral deflector 12 of the separator tube 8 in the separator 9, make the cleaning solution that passes through condensation and carry moistening grit secretly produce centrifugal force, drop down trickles in alkaline liquid pool 11 along separator tube 8 inwalls, flue gas then through being located on separator 9 inwalls, stoping drop along with the plate washer 13 that air-flow rises, obtains the solid-state separation of further gas-liquid, after export 16, enter chimney, row is to atmosphere.

The utility model compared with prior art has following characteristics:

1, utilize the flue gas heat heated scrub to make it overheated, generating portion steam is compound washing liquid, Be atomized into trickle hydrothermal solution and drip, obtain very big vapour-liquid contact interface, greatly improve moistening grit and desulfurization Reaction speed;

2, adopt the static reaction condenser, obtained 2 * 4 ⁿFlue gas mixed flow dividing layer, form very big composite detergent network, further strengthened the interception that desulfurized effect and grit inertial collision obtain and captured effect; The heat transfer coefficient of static reaction condenser is more than 7-8 a times of common blank pipe simultaneously, makes the cooling of flue gas and cleaning solution fast, and moistening grit volume increases, and improves the separating effect of gas, liquid and dust, and prevents to carry secretly the liquid mist.

3, desulfurization and dedusting effect height, desulfurization 90%, dedusting 96%, and cheap, reasonable in design, discharge flue gas and reach below lingemann blackness 1 degree, utilize the agent of flue gas heated scrub, do not need other thermal source, provide cost savings.

Claims

1, a kind of desulfurating dust removing device for flue gas, comprise smoke-intake pipe (2), Venturi tube (4), washing liquid pool (1), water circulating pump (10) etc., it is characterized in that being provided with in the smoke-intake pipe (2) serpentine heating pipe (3) that curls up curl, smoke-intake pipe (2) is not held with Venturi tube (4) and is joined, and Venturi tube (4) lower end is connected to static reaction condenser (5), and the separator (9) that is loaded on static reaction condenser (5) bottom inserts in the washing liquid pool (11).

2, desulfurating dust removing device for flue gas as claimed in claim 1, it is characterized in that described static reaction condenser (5) inside is divided into the middle mixing chamber (14) of several layers, be provided with two parallel pipelines (15) between the mixing chamber (14) in the middle of each, every layer parallel pipeline (15) becomes 90 degree dislocation to arrange each other, inserts in each parallel pipeline (15) with the spiral plate (6) that twists.

3, desulfurating dust removing device for flue gas as claimed in claim 1 is characterized in that described separator (9) inwall is provided with spiral deflector (13).