CN207755930U - Plastic granulating exhaust treatment system - Google Patents

Abstract

The utility model is related to waste gas purification processing technology fields, more particularly to a kind of plastic granulating exhaust treatment system, including two-stage connected in sequence spray oil removal tower, Rose Box, oil fume purifier and photochemical catalytic oxidation equipment, two-stage spray oil removal tower respectively includes first order spray oil removal tower and second level spray oil removal tower；System and technical process described in the utility model are simple, can efficient process plastic granulating gas with foreign flavor, to heterogeneity carry out segment processing purification, purification efficiency is high, anti impulsion load, invests opposite save, non-secondary pollution, waste gas purification effect being capable of meet the requirement of environmental protection.

Description

Plastic granulating exhaust treatment system

Technical field

The utility model is related to waste gas purification processing technology fields, and in particular to a kind of plastic granulating exhaust treatment system.

Background technology

The main generation link of the exhaust gas such as PVC board, PC plate material, plastic granulating is the works such as plastic heating and plank calendering Sequence.Major pollutants have oils, non-methane total hydrocarbons etc..The stink odor of exhaust gas is complicated and changeable.

VOC concentration is about about 200mg/m in exhaust gas³, odor concentration 10000 (dimensionless) left and right.

Exhaust gas discharge executes GB16297-96《Discharge standard of air pollutants》And GB14554-93《Odorant pollutant Discharge standard》.

In existing plastic granulating production line waste gas treatment process, common process means are mainly removed using filter cotton Oil, activated carbon adsorption reduce VOC etc., handle gaseous pollutant.Since plastic granulating discharge amount of exhaust gas is big, pollutant component Complicated and changeable, conventional processing device investment is high, and is difficult to meet the requirement of environmental protection, and there is an urgent need to release a kind of new processing now System and technique handle exhaust gas.

Utility model content

In order to solve the above-mentioned technical problem the deficiency in, the purpose of this utility model is that：It is useless to provide a kind of plastic granulating Gas processing system, technical process is simple, easy to maintain, and applied widely, elastic big, waste gas purification effect can reach environmental protection and want It asks.

The utility model is that technical solution used by solving its technical problem is：

The plastic granulating exhaust treatment system, including two-stage connected in sequence spray oil removal tower, Rose Box, fume purifying Device and photochemical catalytic oxidation equipment, two-stage spray oil removal tower respectively include first order spray oil removal tower and second level spray oil removal Tower, the first order spray oil removal tower and second level spray oil removal tower include tower body, and air outlet, tower is arranged in the upper end of tower body Admission line is arranged in the side of body, and the outlet side of the external flue gas leading of inlet end of admission line, admission line is located at the interior of tower body Air distribution plate is arranged in the outlet side in portion, admission line, and spray tube is arranged in the upper end inside tower body, and multiple sprays are arranged on spray tube Oil separator is arranged in one end of head, tower body, and oil separator is connected with tower body, and polylith oil separating plate, the bottom of oil separating plate are arranged in oil separator Portion is provided with limbers, and water return outlet is arranged in the lower part of oil separator, and water return outlet is connected with spray tube, and draining is arranged in the upper end of oil separator Mouthful, gate gurgle valve is set on drain tap；

The Rose Box includes babinet, and cloth windbreak flowing plate is arranged in the air inlet of babinet, and the inside of babinet sets gradually one Female dirt discharge groove is arranged in the bottom of the cellular silk screen of grade and the cellular silk screen of two level, box inside, and the lower end of female dirt discharge groove is set Set sewage draining exit.

Preferably, the air distribution plate is circular ring type sector air distribution plate, and circular ring type sector air distribution plate is made of polylith rhombic plate, Spacing fixed setting between rhombic plate, the angle being spaced between rhombic plate and horizontal plane are 5-15 degree.

Preferably, the spacing between oil separating plate is fixed, and the height of oil separating plate increases successively from left to right, highest oil separating plate with Oil storage unit is used as between the pool wall of oil separator.

Preferably, photochemical catalytic oxidation equipment includes shell, and multigroup unit module is arranged in the inside of shell, and unit module includes Multiple double hose amalgam vapour lamps and multiple ballasts.

Preferably, cover board is arranged in the upper end of oil separator, and cover board is hinged with oil separator by hinge.

Preferably, cloth windbreak flowing plate includes polylith baffle plate, and baffle plate uses concentric structure form, between baffle plate Interval is become larger around by the center of concentric circles.

Preferably, Rose Box is nido Rose Box.

The plastic granulating waste gas treatment process, the technique include the following steps：

1) exhaust gas is entered by admission line in first order spray oil removal tower, is struck on air distribution plate when exhaust gas flows up, It carries out evenly dispersed, increases the residence time, spray head is sprayed always at this time, is cooled down to exhaust gas, the powder in exhaust gas Dirt and grease import first order spray oil removal bottom of tower under the drive of steam, and the first order sprays the oil water mixture of oil removal bottom of tower It is flowed into oil separator, imports the oil water mixture of oil separator since density contrast will produce separation, the grease of separation floats on water Upper layer is finally discharged via drain tap and recycles, and the recirculated water of oil separator bottom, which is pumped into via water pump in spray tube, to be repeated It utilizes；

2) exhaust gas for passing through first order spray oil removal tower processing enters second level spray oil removal tower again via air outlet Secondary carry out exhaust-gas treatment；

3) exhaust gas after oil removal tower oil removing is sprayed by the second level and enters Rose Box, exhaust gas first passes around cloth when passing through air inlet Windbreak flowing plate breaks up exhaust gas, and exhaust gas is made to be evenly distributed, then in turn through the cellular silk screen of level-one, the cellular silk of two level Net carries out cutting to water mist, oil and gas and gathers effect, further collects the grease not eliminated, and the water mist of dry spray entrainment, subtracts Few influence to follow-up equipment；

4) exhaust gas for passing through Rose Box processing enters oil fume purifier, the small molecule oil droplet that further removal is omitted；

5) exhaust gas being discharged by oil fume purifier finally enters photochemical catalytic oxidation equipment, and exhaust gas passes through photochemical catalytic oxidation equipment Photocatalyst area generated by region by the ultraviolet light and Ti-base catalyst of the specific wavelength that double hose amalgam vapour lamp is sent out Photolysis reactions and oxygen atom oxidation, OH^-Oxidation reaction, final smell component are handled, and tail gas up to standard finally discharges.

Compared with prior art, the utility model has the advantages that：

System and technical process described in the utility model are simple, can efficient process plastic granulating gas with foreign flavor, to not Congruent progress segment processing purification, purification efficiency is high, anti impulsion load, invests opposite saving, non-secondary pollution, in addition, originally Utility model extends the residence time of ozone, active oxygen, hydroxyl radical free radical isoreactivity group in system, synergistic effect enhancing The effect of single equipment, expands the processing section of different-energy, fully reduces the pollutant concentration of foul gas, and keeps away Exempt from single equipment and increase cost increase caused by module number and energy consumption waste, function and protection are comprehensive, and operational safety is steady It is fixed, it operates with simply, spoilage is low, and maintenance is small, and promotion and application have a extensive future, and exhaust gas concentration of emission is far below discharge Standard limited value, waste gas purification effect being capable of meet the requirement of environmental protection.

Description of the drawings

Fig. 1 the utility model flow diagrams；

Fig. 2 the utility model two-stages spray oil removal tower structure schematic diagram；

Fig. 3 the utility model nido Rose Box side views；

Fig. 4 the utility model nido Rose Box front views；

Fig. 5 the utility model photochemical catalytic oxidation device structure schematic diagrams.

In figure：1, spray tube；2, admission line；3, air distribution plate；4, oil separator；5, water pump；6, gate gurgle valve；7, oil separating plate； 8, cover board；9, return pipe；10, spray head；11, air outlet；12, the cellular silk screen of two level；13, female dirt discharge groove；14, level-one Cellular silk screen；15, nido Rose Box；16, cloth windbreak flowing plate；17, ballast；18, unit module；19, double hose amalgam vapour lamp.

Specific implementation mode

The utility model embodiment is described further below in conjunction with the accompanying drawings：

Embodiment 1

As shown in Figs. 1-5, plastic granulating exhaust treatment system described in the utility model, including two-stage connected in sequence spray Oil removal tower, Rose Box, oil fume purifier and photochemical catalytic oxidation equipment, two-stage spray oil removal tower respectively include first order sprinkling diaphragm Oily tower and the second level spray oil removal tower, and the first order spray oil removal tower and second level spray oil removal tower include tower body, tower body Upper end air outlet 11 is set, admission line 2, the external flue gas leading of inlet end of admission line 2, air inlet is arranged in the side of tower body The outlet side of pipeline 2 is located at the inside of tower body, and air distribution plate 3 is arranged in the outlet side of admission line 2, and the air distribution plate 3 is circular ring type Fan-shaped air distribution plate 3, circular ring type sector air distribution plate 3 are made of polylith rhombic plate, the spacing fixed setting between rhombic plate, Ke Yishe It is set to 280mm, the angle being spaced between rhombic plate and horizontal plane is 5-15 degree, this structure can make air-flow maximize uniform point It dissipating, increases residence time of the exhaust gas in tower body, spraying cooling deoiling effect is good, and spray tube 1 is arranged in the upper end inside tower body, Multiple spray heads 10 are set on spray tube 1, and oil separator 4 is arranged in one end of tower body, and oil separator 4 is connected with tower body, specific logical It crosses pipeline to be connected, setting polylith oil separating plate 7 in oil separator 4, the spacing between oil separating plate 7 is fixed, and the height of oil separating plate 7 is certainly left Increase successively to the right, difference of height 200mm, range difference 200mm, oil storage list is used as between highest oil separating plate 7 and the pool wall of oil separator 4 Member, the upper end of oil separator 4 are arranged drain tap, gate gurgle valve 6 are arranged on drain tap, according to periodically collecting recycling the case where greasy dirt, every The bottom of oiled-plate method 7 is provided with limbers, plays the role of connection, and water return outlet, water return outlet and spray tube 1 is arranged in the lower part of oil separator 4 It is connected by return pipe 9, and is pumped by water pump 5；

Rose Box is nido Rose Box 15, and the Rose Box includes babinet, and cloth windbreak flowing plate is arranged in the air inlet of babinet 16, cloth windbreak flowing plate 16 includes polylith baffle plate, and baffle plate uses concentric structure form, and the interval between baffle plate is by concentric Round center becomes larger around, and steam/oil and gas can overcome traditional mistake as cloth windbreak flowing plate 16 is to the diffusion of center of circle surrounding Air quantity is big among filter box, the small drawback of surrounding air quantity, and cloth wind is more uniform；The inside of babinet sets gradually the cellular silk screen of level-one 14 and the cellular silk screen 12 of two level, using the uniformity of honeycomb, space utilization maximizes, and cuts macromolecular water to greatest extent Drop/oil droplet, to make macromolecular mist of oil/water mist condensation gather to get off, the bottom setting female dirt discharge groove 13 of box inside, female Sewage draining exit is arranged in the lower end of dirt discharge groove 13.

Photochemical catalytic oxidation equipment includes shell, and multigroup unit module 18 is arranged in the inside of shell, and unit module 18 includes more A double hose amalgam vapour lamp 19 and multiple ballasts 17, interior specific each independent unit module 18 includes four double hose amalgam Lamp 19, four ballasts 17, a set of control power pack, double hose amalgam vapour lamp 19 is that can be inserted into detachable design, convenient independent Repair is replaced.Unit control power pack can independent control unit module 18, which can integrally be inserted into enclosure slot.This Equipment can be freely combined unit module 18 and count according to the height of air volume situation and exhaust gas concentration.Easy to assembly, structure is tight It rounds up together, maintenance replacement is convenient and simple, and effectively increases the residence time of light quantum, improves removal efficiency, and realize Extensive rapid production.

Wherein, cover board 8 is arranged in the upper end of oil separator 4, and cover board 8 is hinged with oil separator 4 by hinge.

The plastic granulating waste gas treatment process, the technique include the following steps：

1) exhaust gas is entered by air-introduced machine, admission line 2 in first order spray oil removal tower, and cloth is struck when exhaust gas flows up On aerofoil 3, progress is evenly dispersed, increases the residence time, and spray head 10 is sprayed always at this time, is cooled down to exhaust gas, Consider that grease easily blocks filler, design non-filling spraying cooling, the dust and grease in exhaust gas converge under the drive of steam Enter first order spray oil removal bottom of tower, the oil water mixture of first order spray oil removal bottom of tower is flowed into oil separator 4, imports oil separator Since density contrast will produce separation, the grease of separation floats on the upper layer of water, formula straggly is designed in oil separator 44 oil water mixture Oil separating plate 7 can gather grease, and the grease after gathering finally is discharged via drain tap and recycles, and 4 bottom of oil separator is followed Ring water is pumped into recycling in spray tube 1 via water pump 5；

2) exhaust gas for passing through first order spray oil removal tower processing enters second level spray oil removal tower via air outlet 11 Exhaust-gas treatment is carried out again, enhances deoiling effect；

3) exhaust gas after oil removal tower oil removing is sprayed by the second level and enters Rose Box, exhaust gas first passes around cloth when passing through air inlet Windbreak flowing plate 16 breaks up exhaust gas, and exhaust gas is made to be evenly distributed, then in turn through the cellular silk screen 14 of level-one, two level honeycomb Formula silk screen 12 carries out cutting to water mist, oil and gas and gathers effect, further collects the grease not eliminated, and the water of dry spray entrainment Mist reduces the influence to follow-up equipment；

4) exhaust gas for passing through Rose Box processing enters oil fume purifier, after spraying and filtering oil removing, oil smoke removal rate Up to 90%, oil fume purifier can further remove the small molecule oil droplet of omission, improve oil smoke removal efficiency to 98% or more, Prevent attachment of a small amount of oil smoke to follow-up double hose amalgam vapour lamp 19；

5) exhaust gas being discharged by oil fume purifier finally enters photochemical catalytic oxidation equipment, and exhaust gas passes through photochemical catalytic oxidation equipment Photocatalyst area produced by region by the ultraviolet light and Ti-base catalyst of the specific wavelength that double hose amalgam vapour lamp 19 is sent out Third contact of a total solar or lunar eclipse decomposition reaction and oxygen atom oxidation, OH^-Oxidation reaction, final smell component are handled, and tail gas up to standard finally discharges.

Claims (7)

1. a kind of plastic granulating exhaust treatment system, including two-stage connected in sequence spray oil removal tower, Rose Box, oil fume purifier And photochemical catalytic oxidation equipment, which is characterized in that two-stage spray oil removal tower respectively includes first order spray oil removal tower and the second level Oil removal tower is sprayed, the first order spray oil removal tower and second level spray oil removal tower include tower body, and the upper end of tower body is provided Gas port (11), the side setting admission line (2) of tower body, the external flue gas leading of inlet end of admission line (2), admission line (2) outlet side is located at the inside of tower body, and air distribution plate (3) is arranged in the outlet side of admission line (2), the upper end setting inside tower body Multiple spray heads (10), one end setting oil separator (4) of tower body, oil separator (4) and tower are arranged on spray tube (1) for spray tube (1) Body is connected, setting polylith oil separating plate (7) in oil separator (4), and the bottom of oil separating plate (7) is provided with limbers, under oil separator (4) Water return outlet is arranged in portion, and water return outlet is connected with spray tube (1), and drain tap is arranged in the upper end of oil separator (4), is arranged on drain tap and lets out Fuel tap (6)；

The Rose Box includes babinet, and the air inlet setting cloth windbreak flowing plate (16) of babinet, the inside of babinet sets gradually one The cellular silk screen (14) of grade and the cellular silk screen of two level (12), the bottom setting female dirt discharge groove (13) of box inside, female row Sewage draining exit is arranged in the lower end of dirty slot (13).

2. according to plastic granulating exhaust treatment system described in claim 1, which is characterized in that the air distribution plate (3) is circular ring type Fan-shaped air distribution plate, circular ring type sector air distribution plate are made of polylith rhombic plate, the fixed setting of spacing between rhombic plate, rhombic plate with The angle being spaced between horizontal plane is 5-15 degree.

3. according to plastic granulating exhaust treatment system described in claim 1, which is characterized in that the spacing between oil separating plate (7) is solid Fixed, the height of oil separating plate (7) increases successively from left to right, and oil storage is used as between highest oil separating plate (7) and the pool wall of oil separator (4) Unit.

4. according to plastic granulating exhaust treatment system described in claim 1, which is characterized in that photochemical catalytic oxidation equipment includes shell Body, the inside of shell are arranged multigroup unit module (18), unit module (18) include multiple double hose amalgam vapour lamps (19) with it is multiple Ballast (17).

5. according to plastic granulating exhaust treatment system described in claim 1, which is characterized in that the upper end setting lid of oil separator (4) Plate (8), cover board (8) are hinged with oil separator (4) by hinge.

6. according to plastic granulating exhaust treatment system described in claim 1, which is characterized in that cloth windbreak flowing plate (16) includes polylith Baffle plate, baffle plate use concentric structure form, the interval between baffle plate to be become larger around by the center of concentric circles.

7. according to plastic granulating exhaust treatment system described in claim 1, which is characterized in that Rose Box is nido Rose Box (15)。