CN205821221U - Acid can be carried out suspend mutually and the production of chlorinated polyethylene system of water phase suspension switching - Google Patents

Abstract

This utility model provides a kind of and carries out the production of chlorinated polyethylene system that acid suspends mutually and water phase suspension switches, and belongs to technical field of chemical.Including the reactor being sequentially connected, washing kettle, neutralization still, dealkalize still, centrifuge and boiling-bed drying；This production system also includes at least one hydrochloric acid tank；Described washing kettle includes washing kettle body and agitating device；Being provided with the filter communicated with washing kettle body interior on the sidewall of washing kettle body, be provided with washing kettle discharging opening in the bottom of washing kettle body, described washing kettle discharging opening is connected to neutralize still, and described filter is connected to sewage-treatment plant by blow-off pipe；Described blow-off pipe is provided with three-way valve, and the bypass interface of three-way valve is connected to described hydrochloric acid tank by pipeline, and the outlet of described hydrochloric acid tank is connected to described reactor.This utility model can be carried out acid phase process and Aqueous phase switching produce, it is to avoid the wasting of resources, efficent use of resources flexibly according to the market situation of hydrochloric acid, increase economic benefit.

Description

Acid can be carried out suspend mutually and the production of chlorinated polyethylene system of water phase suspension switching

[technical field]

This utility model relates to technical field of chemical, be specifically related to a kind of carry out acid mutually suspend and water phase suspension switching Production of chlorinated polyethylene system.

[background technology]

Chlorinated polyethylene, chemical name CPE, for saturated macromolecular material, have excellent stability, weather resisteant, resistance to ozone, Chemical-resistant resistance and ageing-resistant performance, be widely used in the fields such as plastics, rubber, building materials, electromechanics, automobile, military project.At present, Chlorinated polyethylene (CPE) production technology has water phase suspension, acid phase suspension method, solid phase method and solwution method.To generally adopt below It is described below by acid phase suspension method and water phase suspension:

Acid phase suspension method is to be suspended in dense by high density polyethylene (HDPE) (High Density Polyethylene, referred to as " HDPE ") The hydrochloric acid solution that degree is 10-20% carries out chlorination, then with the continuous deacidification of plane rotary disc vacuum filter, washing, discharging, finally Wet feed after deacidification passed in and out centrifugal, dry and grind to obtain CPE finished product.It is little that the method is mainly characterized by three waste discharge, work Skill is simple, and constant product quality, produced concentration of hydrochloric acid, more than 28%, can recycle；But rotary vacuum disk fiter, And centrifugal drying equipment investment cost is the highest, and the material after drying steps terminates is also relatively thicker, needs to be ground it, Process of lapping is a process of very power consumption, and general one ton of material needs about 1000 degree of electricity, and therefore, production cost is the highest.

Equipment investment expense just because of acid phase suspension method is the highest, and more producer is more willing to use water phase suspension.Domestic general All over use water phase suspension mainly include chlorination, deacidification, neutralization, dealkalize, centrifugation, be dried, pulverize and hybrid packed These several steps.

1, chlorination: according to the size of " chlorination tank ", adds appropriate water purification in " chlorination tank ", is subsequently adding auxiliary agent and height Density polyethylene (High Density Polyethylene, referred to as " HDPE ") PP Pipe Compound, is passed through after being warming up to uniform temperature Chlorine carries out reacting (generally using syllogic to lead to chlorine), is insulation and the process of cooling after having reacted.

2, deacidification: being the material of chlorination to be transferred to deacidification still carry out deacidification, the process of deacidification generally comprises two kinds: (1) many times Add washing, be i.e. the CPE material that reactor transfer is moved past, by filter, sour water released, after being put into certain water level Slurry is own through the thickest, is then shut off filter valve, water is added to previous water level, repeated multiple times washing；(2) while adding water, one While discharge water.", the process of deacidification is actually the process of a kind of dilution, and water consumption is huge, and produces a large amount of low-concentration hcl waste water.

3, neutralize: add alkali by intensification and neutralize the hydrochloric acid within CPE material by inside alkali entrance CPE, until reagent paper tester Material containing acid few time, this process just completes, and this process is it is generally required to more than 4 hours, it is sometimes desirable to individual hour of 7-8, even Longer.After neutralization completes, then material is transferred in dealkalize still.

4, dealkalize: with deacidification is similar, alkali liquor is bled off by filter screen, add clean water complete several times, transfer to from Scheming.This process is typically short a lot, probably at about 1 hour than the time used during deacidification.

5, centrifugal: rotary process is that material and moisture content are separated, remaining CPE part, transfer in boiling-bed drying.This Centrifuge employed in step is generally stainless steel, and its acid resistance is poor.

6, it is dried: with boiling-bed drying, material CPE is dried.Drying bed employed in this step is generally stainless steel Matter, its acid resistance is poor.

7, hybrid packed: dried CPE semi-finished product are added a certain proportion of interleaving agent (calcium carbonate), mix in batch mixer Uniformly, CPE finished product can be packaged into.

The manufacturer of the most domestic chlorinated polyethylene is all solely to use a set of equipment to carry out acid phase suspension method and aqueous-phase suspending The production of method, hydrochloric acid can be recycled by acid phase suspension method, and water phase suspension is relatively low due to concentration of hydrochloric acid, only as Waste water is disposed, and the price of hydrochloric acid can be along with the business fluctuations in market, and when market quotation depression, acid phase suspension method is to hydrochloric acid Recycling also can not produce enough economic worths；When hydrochloric acid price is higher, diluted acid is directly worked as calcellation by water phase suspension Water processes, and is also the waste of a kind of resource.

[utility model content]

Goal of the invention of the present utility model is: for the problem of above-mentioned existence, it is provided that one can carry out acid and suspend outstanding with aqueous phase mutually The production of chlorinated polyethylene system of float glass process switching, can carry out acid phase process and Aqueous phase flexibly flexibly according to the market situation of hydrochloric acid Switching, it is to avoid the wasting of resources, efficent use of resources, increase economic benefit.

To achieve these goals, the technical solution adopted in the utility model is as follows:

Acid can be carried out suspend mutually and the production of chlorinated polyethylene system of water phase suspension switching, anti-for chlorination including be sequentially connected The reactor answered, for washing the washing kettle of deacidification, neutralizing still, for washing the dealkalize still of dealkalize, use for neutralize deacidification In the centrifuge of dehydration with for the boiling-bed drying being dried；Described production system also includes at least one hydrochloric acid tank；Described water Wash still and include washing kettle body and agitating device；The sidewall of washing kettle body is provided with the filter communicated with washing kettle body interior, Be provided with washing kettle discharging opening in the bottom of washing kettle body, described washing kettle discharging opening is connected to neutralize still, and described filter is by row Dirty pipe is connected to sewage-treatment plant；Described blow-off pipe is provided with three-way valve, and the bypass interface of three-way valve is connected to institute by pipeline Stating hydrochloric acid tank, the outlet of described hydrochloric acid tank is connected to described reactor.

Use above-mentioned production system, when hydrochloric acid market are bad, after using Aqueous phase to produce hydrochloric acid, by the hydrochloric acid waste water of washing kettle It is directly discharged to wastewater treatment equipment dispose；When hydrochloric acid market are preferable, after using Aqueous phase to produce hydrochloric acid, open washing kettle Reaction is obtained hydrochloric acid waste water (concentration of hydrochloric acid is 8-10%) and delivers to hydrochloric acid tank and store by the bypass valve of the three-way valve connected Come, after the aqueous-phase suspending production schedule completes, the hydrochloric acid waste water in hydrochloric acid tank is sent by pumping in reactor, carries out acid and hang mutually Float glass process is reacted, and the hydrochloric acid waste water (concentration of hydrochloric acid 25-28%) reaction obtained is sold by market price.Therefore this utility model passes through Increase hydrochloric acid tank and pipeline is improved, such that it is able to the switching realizing acid phase process and Aqueous phase produces, certainly, using When native system carries out the production of acid phase process, the process of follow-up deacidification be not use Germany technology with the continuous deacidification of vacuum filter, Washing, discharging, finally pass in and out the wet feed after deacidification centrifugal, dry and grind；But use native system washing, in With, dealkalize, centrifugal, the operation that is dried.

Further, due to chlorinated polyethylene intermediate material, the phenomenon of caking easily occurs in each process procedure.Material produces Caking can cause the product to lose, and reduces yield, increases production cost, and more seriously it be normally giving birth to of next process Produce and bring the most serious impact, cause the blockings such as pipe-line equipment, make follow-up production be difficult to, therefore, this utility model Also between described dealkalize still and centrifuge, it is being additionally provided with filter.Described filter include filter chamber, the first screen plate and The second screen plate that first screen plate intersects, described filter chamber is separated into the adjacent feed space in left and right by described first screen plate, is gone out Material room；Described second screen plate is in the tilted setting of feed space, and feed space is separated into neighbouring upper chamber and lower chambers； Described upper chamber is provided with charging aperture, flush port and the coarse fodder outlet being in communication with the outside, and described discharge chamber is provided with going out of being in communication with the outside Material mouth；The outlet of described coarse fodder is close to the low side of the first screen plate.Owing to chlorinated polyethylene caking material has himself, According to the feature of its size and shape, on screen plate, the size of through hole also has certain requirement, and through hole can be that the length of side is The rhombus through hole of 0.6-1.5cm, major axis is 1.0-1.5cm, short axle is the elliptical hole of 0.6-1.2cm, and aperture is 0.6-1.5cm Manhole, the length of side is the combination of one or more in 0.6-1.5cm rectangular through-hole.Use this filter can remove life The coarse fodder produced during product, it is to avoid the blocking of pipeline, and the releasing the most very convenient power-saving of caking coarse fodder.

Further, described boiling-bed drying includes drying bed body, enters hot air apparatus, cyclone separator and air exhausting device；Described Entering hot air apparatus and include aerator, storage heater, described storage heater is by the end of intake stack with described drying bed body Portion connects；Described air exhausting device includes air-introduced machine, wind pipe and air inducing pipeline, and the top of described drying bed body is by described Wind pipe connects with cyclone separator, and described air-introduced machine is connected with cyclone separator by described air inducing pipeline；Described drying bed Offering charging aperture and discharging opening on the sidewall of body, this internal sieve plate that is provided with of drying bed, described drying bed also includes that stirring is broken up Device, described stirring dispersing device includes being arranged on the stirring power set below drying bed body, this is the most internal to be arranged on drying bed Power set and the rotating shaft of stirring vane are stirred in stirring vane and the connection in portion；Described stirring vane is positioned at the top of sieve plate, with The vertical dimension of sieve plate is 0.5-50mm.

Further, the surface of described stirring vane is provided with hairbrush or several equally distributed protrusions.

Further, the bottom of described cyclone separator is provided with Blowing stopper, and Blowing stopper has feed back outlet；Described drying bed body Sidewall on be additionally provided with feed back entrance, the locus of described feed back outlet in the vertical direction is higher than feed back entrance, described feed back Export and connected by the return pipeline being obliquely installed with between feed back entrance；Described feed back exports also by Venturi tube and feedback air Machine connects, and described Venturi tube and return pipeline are on same straight line.

Further, described Venturi tube is inlet end near one end of feed back blower fan, and the other end is outlet side；Described aerator Being connected by blowing line with between storage heater, described blowing line is additionally provided with blast connection, blast connection is connected to institute State the outlet side of Venturi tube.

Further, described air inducing pipeline being additionally provided with tail gas absorber, the entrance of tail gas absorber and cyclone separator are by pipe Road connects, and the outlet of described tail gas absorber is connected with air-introduced machine by pipeline.

Further, described drying bed body includes anticorrosion internal layer, middle enhancing structure sheaf and appearance aging resistance outer layer；Described anti- Rotten internal layer by gelatin jet on mould after solidify to form；Strengthening structure sheaf in the middle of described is alternately to be covered with glass fabric by glue Lid bonding is composited；Described appearance aging resistance outer layer is to be to spray after 100:2-3 mixes by glue and age resister according to mass ratio Penetrate and solidify to form after centre strengthens structure sheaf surface.

In sum, owing to have employed technique scheme, the beneficial effects of the utility model are:

1, this utility model is by increasing hydrochloric acid tank and improve pipeline, such that it is able to realize acid phase process and Aqueous phase Switching produces, and can recycle hydrochloric acid waste water according to the market of hydrochloric acid or directly discharge, thus realize the most economical Benefit.

2, the design science of filter used in this utility model is reasonable, it is possible to remove the coarse fodder produced in production process, it is to avoid The blocking of pipeline, and the releasing the most very convenient power-saving of caking coarse fodder.

3, this utility model arranges agitating device in boiling-bed drying, by the effect of breaing up of stirring vane, stops material at sieve Condense on plate thus block the through hole on sieve plate or be bonded on sieve plate, thus reduce the number of times of cleaning sieve plate, improve production efficiency. Owing to boiling-bed drying is the highest, and sieve plate is positioned at drying bed bottom, so the power set of agitator are arranged on boiling Rise the lower section of drying bed, so that stirring shaft will not be long, a part of power can be saved.

4, this utility model is by arranging feed back blower fan, Venturi tube and the return pipeline being obliquely installed so that cyclone separator falls The material got off continues to be dried in returning to drying bed body in time, and will not form the blocking of material, relative to being not provided with venturi Pipe, this utility model wind speed faster, can reduce the energy consumption of feed back blower fan.This utility model connects literary composition mound also by with blast connection In pipe and aerator, utilize the negative pressure that Venturi tube is formed, can effectively utilize the wind of aerator, thus reduce the pressure of feed back blower fan Contracting air consumption, plays more preferable energy-saving effect.

[accompanying drawing explanation]

Fig. 1 is the annexation schematic diagram of production system of the present utility model；

Fig. 2 is the structural representation of boiling-bed drying in this utility model；

Fig. 3 is the enlarged drawing in A portion in boiling-bed drying in this utility model；

Fig. 4 is the external structure schematic diagram of filter in this utility model；

Fig. 5 is the internal structure schematic diagram of filter in this utility model.

Wherein, 1-hydrochloric acid tank, 2-reactor, 3-washing kettle, 31-filter, in 4-and still, 5-dealkalize still, 6-filter, 61-discharge chamber, 62-charging aperture, 63-flush port, 64-feed space, 65-upper chamber, 66-lower chambers, 67-coarse fodder exports, 68- First screen plate, 69-the second screen plate；7-centrifuge, 8-boiling-bed drying, 81-drying bed body, 82-aerator, 83- Stirring power set, 84-stirring vane, 85-sieve plate, 86-tail gas absorber, 87-cyclone separator, 88-air-introduced machine, 89- Storage heater, 871-Blowing stopper, 872-feed back blower fan, 873-Venturi tube, 9-sewage-treatment plant, 10-three-way valve.

[detailed description of the invention]

Below by way of detailed description of the invention and combine accompanying drawing the utility model is described in further detail.

As it is shown in figure 1, carry out, for of the present utility model, the production of chlorinated polyethylene system that acid suspends mutually and water phase suspension switches Schematic diagram, figure can be carried out acid mutually suspend and water phase suspension switching production of chlorinated polyethylene system, including be sequentially connected For the reactor 2 of chlorination reaction, for washing the washing kettle 3 of deacidification, for neutralizing the neutralization still 4 of deacidification, for water elution The dealkalize still 5 of alkali, for removing the filter 6 of coarse fodder, for the centrifuge 7 of dehydration with for dry boiling-bed drying 8； Described production system also includes at least one hydrochloric acid tank 1；Described washing kettle 3 includes washing kettle body and agitating device；At water The sidewall washing still body is provided with the filter 31 communicated with washing kettle body interior, is provided with washing kettle in the bottom of washing kettle body and goes out Material mouth, described washing kettle discharging opening is connected to neutralize still 4, and described filter 31 is connected to sewage-treatment plant 9 by blow-off pipe； Described blow-off pipe is provided with three-way valve 10, and the bypass interface of three-way valve 10 is connected to described hydrochloric acid tank 1, described salt by pipeline The outlet of acid storage tank 1 is connected to described reactor 2.

As shown in Figures 2 and 3, for structural representation and the partial enlarged drawing of described boiling-bed drying, described boiling-bed drying Including drying bed body 81, enter hot air apparatus, cyclone separator 87 and air exhausting device；Described enter hot air apparatus include aerator 82, storage heater 89, described storage heater 89 is connected with the bottom of described drying bed body 81 by intake stack；Institute Stating air exhausting device and include air-introduced machine 88, wind pipe and air inducing pipeline, the top of described drying bed body 81 is by described air-out Pipeline connects with cyclone separator 87, and the top of described cyclone separator 87 is by described air inducing pipeline with tail gas absorber 86 even Being connected to air-introduced machine 88 after Tong, the entrance of tail gas absorber 86 leads to 87 pipings and connects with cyclone separator, described tail gas absorption The outlet of device 86 is connected with air-introduced machine 88 by pipeline.By device for absorbing tail gas 86, can be by from boiling-bed drying out Acid gas absorbs, thus reduces the discharge of waste gas.Charging aperture 812 and discharging opening is offered on the sidewall of described drying bed body 81 813, it is provided with sieve plate 85 in drying bed body 81, described drying bed also includes stirring dispersing device, described stirring dispersing device bag Include and be arranged on the stirring power set 82 below drying bed body, the stirring vane 84 being arranged on drying bed body interior and company Connect stirring power set and the rotating shaft of stirring vane；Described stirring vane 84 is positioned at the top of sieve plate 85, vertical with sieve plate 85 Distance is 0.5-50mm.Preferably, the surface of described stirring vane is provided with hairbrush or several equally distributed protrusions.

In order to reclaim the material that cyclone separator falls, boiling-bed drying of the present utility model is additionally provided with feeding back device, specifically leads to Crossing following structure to realize: the bottom of described cyclone separator 87 is provided with Blowing stopper 871, Blowing stopper has feed back outlet；Described dry Being additionally provided with feed back entrance 811 on the sidewall of dry bed body 81, the locus of described feed back outlet in the vertical direction is higher than feed back Entrance 811, the outlet of described feed back is connected by the return pipeline being obliquely installed with between feed back entrance 811；Described feed back exports Being connected with feed back blower fan 872 also by Venturi tube 873, described Venturi tube 873 is on same straight line with return pipeline. For convenience, near one end of feed back blower fan 872, described Venturi tube being referred to as inlet end, the other end is outlet side；Institute State and connected by blowing line between aerator 82 with storage heater 89, described blowing line is additionally provided with blast connection, drum Wind arm is connected to the outlet side of described Venturi tube 873.Utilize the negative pressure that Venturi tube 873 is formed, can effectively utilize air blast The wind of machine 82, thus reduce the compressed air consumption of feed back blower fan 872, play more preferable energy-saving effect.

As shown in Figure 4 and Figure 5, for external structure schematic diagram and the internal structure schematic diagram of filter 6.Described filter 6 wraps Include filter chamber, the second screen plate 69 that the first screen plate 68 intersects with the first screen plate 68, described filter chamber is by described first Screen plate 68 is separated into the adjacent feed space in left and right 64, discharge chamber 61；Described second screen plate 69 in the tilted setting of feed space, And feed space 64 is separated into neighbouring upper chamber 65 and lower chambers 66；Described upper chamber 65 is provided with and is in communication with the outside Charging aperture 62, flush port 66 and coarse fodder outlet 67, described discharge chamber 61 is provided with the discharging opening (not shown) being in communication with the outside； Described coarse fodder outlet 67 is close to the low side of the first screen plate 68.Owing to chlorinated polyethylene solution block has himself, According to the feature of its size and shape, on screen plate, the size of through hole also has certain requirement, and through hole can be that the length of side is The rhombus through hole of 0.6-1.5cm, major axis is 1.0-1.5cm, short axle is the elliptical hole of 0.6-1.2cm, and aperture is 0.6-1.5cm Manhole, the length of side is the combination of one or more in 0.6-1.5cm rectangular through-hole.This filter 6 is used to remove The coarse fodder produced in production process, it is to avoid the blocking of pipeline, and the releasing the most very convenient power-saving of caking coarse fodder.

By improvement of the present utility model, it is possible to achieve when hydrochloric acid market are preferable, after using Aqueous phase to produce hydrochloric acid, open water Wash the bypass valve of the three-way valve 10 that still is connected reaction obtains hydrochloric acid waste water (concentration of hydrochloric acid is 8-10%) to deliver to hydrochloric acid storage Tank 8 stores, and after the aqueous-phase suspending production schedule completes, the hydrochloric acid waste water in hydrochloric acid tank 8 is sent by pumping to reactor 1 In, carry out acid phase suspension method reaction, not only make use of the spent acid of water phase suspension, moreover it is possible to acid phase suspension method is reacted the salt obtained Acid waste water (concentration of hydrochloric acid 25-28%) is sold by market price, it is thus achieved that economic worth.

Although this utility model improvement part is the most uncomplicated, but to those skilled in the art, this improvement overcomes traditional Concept, has broken factory and can only carry out single water phase suspension and the general layout of acid suspension method, and in economize on electricity, recovery Utilize resource, the aspect that saves time to be better than existing equipment and method, be that the utility model with novelty is created.

Described above is the detailed description for the preferable possible embodiments of this utility model, but embodiment is not limited to this practicality Novel patent claim, the equal change completed under the technical spirit suggested by all this utility model or modification change, all The contained the scope of the claims of this utility model should be belonged to.

Claims (9)

1. can carry out acid mutually suspend and water phase suspension switching production of chlorinated polyethylene system, including be sequentially connected for chlorination Reaction reactor, for wash deacidification washing kettle, for neutralize deacidification neutralize still, for wash dealkalize dealkalize still, For the centrifuge of dehydration with for the boiling-bed drying being dried；It is characterized in that: described production system also includes at least one salt Acid storage tank；Described washing kettle includes washing kettle body and agitating device；The sidewall of washing kettle body is provided with and washing kettle body The filter that inside communicates, is provided with washing kettle discharging opening in the bottom of washing kettle body, and described washing kettle discharging opening is connected to neutralize still, Described filter is connected to sewage-treatment plant by blow-off pipe；Described blow-off pipe is provided with three-way valve, and the bypass interface of three-way valve leads to Piping is connected to described hydrochloric acid tank, and the outlet of described hydrochloric acid tank is connected to described reactor.

The production of chlorinated polyethylene system carrying out acid suspension mutually and water phase suspension switching the most according to claim 1, its It is characterised by: between described dealkalize still and centrifuge, be additionally provided with filter.

The production of chlorinated polyethylene system carrying out acid suspension mutually and water phase suspension switching the most according to claim 2, its It is characterised by: described filter includes the second screen plate that filter chamber, the first screen plate and the first screen plate intersect, described mistake Filter chamber is separated into the adjacent feed space in left and right, discharge chamber by described first screen plate；Described second screen plate is tilted at feed space Arrange, and feed space is separated into neighbouring upper chamber and lower chambers；Described upper chamber be provided be in communication with the outside charging aperture, Flush port and coarse fodder outlet, described discharge chamber is provided with the discharging opening being in communication with the outside；The outlet of described coarse fodder is close to the first screen plate Low side.

The production of chlorinated polyethylene system carrying out acid suspension mutually and water phase suspension switching the most according to claim 3, its It is characterised by: described boiling-bed drying includes drying bed body, enters hot air apparatus, cyclone separator and air exhausting device；Described enter Hot air apparatus includes aerator, storage heater, and described storage heater is by the bottom of intake stack with described drying bed body Connection；Described air exhausting device includes that air-introduced machine, wind pipe and air inducing pipeline, the top of described drying bed body go out described in passing through Wind pipeline connects with cyclone separator, and described air-introduced machine is connected with cyclone separator by described air inducing pipeline；Described drying bed is originally Offering charging aperture and discharging opening on the sidewall of body, this internal sieve plate that is provided with of drying bed, described drying bed also includes that dress is broken up in stirring Putting, described stirring dispersing device includes being arranged on the stirring power set below drying bed body, is arranged on drying bed body interior Stirring vane and connect stirring power set and the rotating shaft of stirring vane；Described stirring vane is positioned at the top of sieve plate, with sieve The vertical dimension of plate is 0.5-50mm.

The production of chlorinated polyethylene system carrying out acid suspension mutually and water phase suspension switching the most according to claim 4, its It is characterised by: the surface of described stirring vane is provided with hairbrush or several equally distributed protrusions.

The production of chlorinated polyethylene system carrying out acid suspension mutually and water phase suspension switching the most according to claim 5, its Be characterised by: on described first screen plate, the second screen plate, offer through hole, described through hole be the length of side be the Pedicellus et Pericarpium Trapae of 0.6-1.5cm Shape through hole, major axis is 1.0-1.5cm, short axle is the elliptical hole of 0.6-1.2cm, and aperture is the manhole of 0.6-1.5cm, The length of side is the combination of one or more in 0.6-1.5cm rectangular through-hole.

The production of chlorinated polyethylene system carrying out acid suspension mutually and water phase suspension switching the most according to claim 6, its Being characterised by: the bottom of described cyclone separator is provided with Blowing stopper, Blowing stopper has feed back outlet；The side of described drying bed body Being additionally provided with feed back entrance on wall, the locus of described feed back outlet in the vertical direction exports higher than feed back entrance, described feed back Connected by the return pipeline being obliquely installed with between feed back entrance；The outlet of described feed back is also by Venturi tube with feed back blower fan even Connecing, described Venturi tube and return pipeline are on same straight line.

The production of chlorinated polyethylene system carrying out acid suspension mutually and water phase suspension switching the most according to claim 7, its It is characterised by: described Venturi tube is inlet end near one end of feed back blower fan, and the other end is outlet side；Described aerator and heat Being connected by blowing line between wind heater, described blowing line is additionally provided with blast connection, blast connection is connected to described literary composition The outlet side of venturi.

The production of chlorinated polyethylene system carrying out acid suspension mutually and water phase suspension switching the most according to claim 8, its Being characterised by: be additionally provided with tail gas absorber on described air inducing pipeline, the entrance of tail gas absorber is with cyclone separator by pipeline even Logical, the outlet of described tail gas absorber is connected with air-introduced machine by pipeline.