CN210711343U

CN210711343U - Automatic cleaning and drying device in glyphosate technical production process

Info

Publication number: CN210711343U
Application number: CN201921092067.7U
Authority: CN
Inventors: 舒建军; 杨福海
Original assignee: Inner Mongolia Xingfa Technology Co ltd
Current assignee: Inner Mongolia Xingfa Technology Co ltd
Priority date: 2019-07-12
Filing date: 2019-07-12
Publication date: 2020-06-09
Anticipated expiration: 2029-07-12

Abstract

The utility model provides an automatic drying device that washs in glyphosate original medicine production process, crystallization kettle are connected through centrifugal pump and crystallization liquid transfer tank, and crystallization liquid transfer tank is connected through discharge pump and one-level vacuum belt filter, and one-level vacuum belt filter is connected with the mother liquor groove through gas-liquid separation jar one, and the mother liquor groove is connected with second grade vacuum belt filter, and second grade vacuum belt filter is connected with the rotary kiln through the hopper, and the rotary kiln is connected to the finished product feed bin through rubbing crusher. The device solves the defects of large operation intermittency, high labor intensity of workers, low material washing efficiency, poor controllability of material washing quality, uncontrollable discharge of site waste gas and waste liquid and the like in the centrifuge material washing and manual feeding drying modes. The aim of mechanical person changing and automatic person reduction can be achieved, the number of people can be reduced by 50%, the high-grade rate of glyphosate is improved by 10%, and the emission reduction of glyphosate mother liquor reaches 40%.

Description

Automatic cleaning and drying device in glyphosate technical production process

Technical Field

The utility model relates to an automatic washing material drying technology in glyphosate raw medicine production process adopts the supporting drying technology of negative pressure suction filtration and rotary kiln, realizes the automatic washing material stoving of glyphosate trade serialization.

Background

At present, the traditional glyphosate technical production industry has two modes on the washing and drying modes: firstly, after putting into the suction filter bucket with the interior material of crystallization kettle, adopt the vacuum pump to carry out the negative pressure suction filtration, after the mother liquor is dried, close the vacuum pump, add water and soak back suction filtration once more until wash water and take out futilely. Then, the glyphosate wet powder in the suction filter tank is manually dug out and packaged, and is transferred to a drying station, and the glyphosate wet powder is dried by an airflow drying tower. The operation mode has the defects of high labor intensity, intermittent operation, high water consumption, braid invasion and the like, and has poor controllability in the aspects of site, environmental protection and the like. In recent years, a horizontal scraper discharging centrifuge is introduced into the glyphosate industry, although the equipment has more advantages, mechanical people changing and automatic people reduction are realized to a certain extent. However, the equipment also needs manual packaging, and then the packaged wet powder is put into the drying airflow drying tower again, so that the manual requirement is only relatively reduced. Meanwhile, a plurality of problems are exposed in the using process, most prominently, after 5 batches of materials are washed each time, the filter cloth is easy to harden, the mother liquor in the feeding and washing processes cannot be smoothly discharged, and the efficiency of the material washing machine is obviously reduced. At the moment, the washing of the materials needs to be stopped, manual cleaning and digging and a large amount of water washing are utilized, the process is long in time and high in labor intensity, continuous production becomes discontinuous, and the filter cloth made of polytetrafluoroethylene materials is easily damaged by shovels in the cleaning process, so that the production cost is increased. In addition, the equipment is easy to generate extremely large vibration in the using process and has low safety performance. The utility model discloses use vacuum belt filter and rotary kiln as basic unit, reform transform crystallization kettle blowing system, use the centrifugal pump to change over to the liquid of crystallization transfer to the groove in the liquid of crystallization, the rethread centrifugal pump is changeed to vacuum belt filter and is washd back automatic transport and advance the rotary kiln and dry. And from the discharge of the crystallization kettle to the completion of the package of the glyphosate dry powder, a closed system is adopted in the whole process, the discharge of waste gas and waste liquid is controlled, and the operation environment of a production field is improved. The full-automatic operation of the conveying of the crystallization liquid, the charging and cleaning of the vacuum belt filter and the charging and discharging of the rotary kiln can achieve the effects of improving the working efficiency, reducing the number of workers, improving the quality of glyphosate and reducing the environmental protection pressure of mother liquor treatment.

Disclosure of Invention

The traditional material washing and drying mode is that post staff put the crystallization liquid in the crystallization kettle to the centrifuge that each crystallization kettle corresponds, use centrifuge to deviate from the mother liquor totally, reuse clear water to wash the wet powder of glyphosate in the centrifuge, after washing, put the wet powder of glyphosate to material receiving box again, reuse spade to dig the wet powder of glyphosate into the wrapping bag, at last the manual work drops into in the drying-machine. The material washing method has the defects of large operation intermittency, high labor intensity of workers, low material washing and drying efficiency, poor controllability of material washing and drying quality, large water consumption, fabric invasion, uncontrollable discharge of on-site waste gas and waste liquid and the like.

Although the introduction of the horizontal scraper discharging centrifuge solves the problems, the horizontal scraper discharging centrifuge also has the defects of low efficiency, high labor intensity, low safety factor and the like.

The utility model discloses use closed system to carry wet powder of crystallization liquid, vacuum belt filter self-cleaning, automatic transport to the rotary kiln stoving, both can realize that the automatic material of washing of serialization is dried, reduce intensity of labour, promote and wash material drying efficiency, stabilize and wash material oven-dry mass, also can effectively collect waste gas, the waste liquid of washing the material in-process production, reduced environmental pollution. Meanwhile, the equipment runs stably, vibration cannot be generated, and the safety factor is very high. The method comprises the following specific steps:

the utility model provides an automatic washing drying device in glyphosate raw medicine production process, crystallization kettle is connected through centrifugal pump and crystallization liquid transfer tank, and crystallization liquid transfer tank is connected with one-level vacuum belt filter through the discharge pump, and one-level vacuum belt filter is connected with the mother liquor groove through gas-liquid separation jar one, and the mother liquor groove is connected with second grade vacuum belt filter, and second grade vacuum belt filter is connected with the rotary kiln through the hopper, and the rotary kiln is connected to the finished product feed bin through the rubbing crusher.

The second-stage vacuum belt filter is connected with a secondary recycling washing water tank through a gas-liquid separation tank II, and the secondary recycling washing water tank is connected with a mother liquid tank through a secondary washing water tank pump.

The two-stage vacuum belt filter is respectively connected with a water ring vacuum pump through a washing water distributor and a gas-liquid separation tank II, and the water ring vacuum pump is connected with a steam condensate collecting tank.

The second-stage vacuum belt filter is also connected with a primary recycling washing water tank through a washing water distributor, and the primary recycling washing water tank is connected with a secondary recycling washing water tank through a primary recycling washing water tank pump.

The rotary kiln is connected with a cyclone dust collector, and the cyclone dust collector is connected with a finished product bin through a conveying auger; the cyclone dust collector is also connected with a bag-type dust collector, and the bag-type dust collector is connected to a tail gas absorption device.

The utility model discloses a reform transform crystallization liquid blowing system, link to each other all crystallization kettle blowing pipes and connect to crystallization liquid transfer tank and join in marriage piping to vacuum belt filter again through the centrifugal pump. And after the crystallization liquid in the crystallization kettle reaches a material transferring condition, starting a crystallization liquid transfer tank by a crystallization post operator for stirring, opening a bottom valve of the crystallization kettle, transferring the crystallization liquid to the crystallization liquid transfer tank through a centrifugal pump, and informing a material washing post to start material washing when the crystallization liquid in the crystallization liquid transfer tank reaches a certain liquid level. The operator at the material washing post starts all equipment of a material washing system such as a belt filter (specifically a vacuum belt filter), a water ring vacuum pump and the like and all equipment of a drying system such as a rotary kiln, an induced draft fan, a blower, a material conveying auger and the like; adjusting the discharge pump of the crystal liquid transfer tank to start the discharge pump in a frequency conversion manner, informing a crystallization post to open a bottom valve of the crystal liquid transfer tank, and adjusting the frequency conversion flow rate and the material thickness by adjusting the vacuum belt filter and the discharge pump of the crystal liquid transfer tank.

The vacuum belt filter is divided into two stages, the crystallization liquid is transferred to a first-stage vacuum belt filter to separate out the mother liquid, the separated permeation liquid is transferred to a mother liquid tank through a gas-liquid separation tank and then transferred to a mother liquid settling tank to be settled, and the filtered wet powder is conveyed to a hopper and flushed by secondary reuse washing water to a second-stage vacuum belt filter to be washed; the permeate liquid separated from the front end of the secondary vacuum belt filter passes through a gas-liquid separation tank and is recycled to a secondary recycling washing water tank, and the permeate liquid is transferred to a mother liquid tank through a bypass when the mother liquid content is large and is used for supplementing primary recycling washing water;

the middle part of the second-stage vacuum belt filter is provided with a washing water distributor, the steam condensate is cooled and transferred to a water ring vacuum pump through a centrifugal pump and then transferred to a steam condensate collecting tank after being circulated, then the steam condensate in the collecting tank is transferred to a washing water distributing pipe on the belt filter through the centrifugal pump to be washed, and permeate liquid separated from the middle rear end is transferred to a primary recycling washing water tank through a gas-liquid separation tank to be used for supplementing water for secondary recycling washing water and removing crystal water in an alcohol process. Conveying the filtered wet powder of the secondary vacuum belt filter to a hopper, conveying the wet powder to a rotary kiln through an auger, heating and drying the wet powder, conveying the smaller glyphosate particles to a cyclone dust collector through induced air, conveying light glyphosate components to a dust removal system, and conveying heavy glyphosate components to a finished product bin through the auger; larger glyphosate particles pass through a vibrating screen from the rear end of the rotary kiln, fine glyphosate particles pass through a scraper conveyor to a finished product bin, and large glyphosate particles pass through a crusher and are packaged and returned to a crystallization kettle for recovery.

The utility model discloses a can solve that centrifuge dehydration mode washes that the operation intermittent type nature that the material exists is big, workman intensity of labour is big, wash that material efficiency is low, wash that the material quality controllability is poor, on-the-spot waste gas, waste liquid discharge uncontrolled scheduling problem, can realize the target that "mechanized trades people, automatic subtracts people", can reduce 50% of the staff, promote glyphosate premium grade product rate 10%, glyphosate mother liquor reduces discharging and reaches 40%.

Drawings

Fig. 1 is a schematic structural diagram of an automatic cleaning and drying device in a glyphosate technical production process, wherein the automatic cleaning and drying device comprises a crystallization kettle 1, a centrifugal pump 1-1, a crystallization liquid transfer tank 2, a discharge pump 2-1, a primary belt filter 3, a gas-liquid separation tank I4-1, a gas-liquid separation tank II 4-2, a mother liquid tank 5, a mother liquid discharge pump 5-1, a secondary belt filter 6, a hopper 7, a rotary kiln 8, a pulverizer 9, a finished product bin 10, a washing material water distributor 11, a secondary recycling washing water tank 12, a secondary washing water tank pump 12-1, a primary recycling washing water tank 13, a primary washing water tank pump 13-1, a water ring vacuum pump 14, a steam condensate collecting tank 15, a cyclone dust collector 16, a material conveying auger 17 and a cloth bag dust collector 18.

Detailed Description

Due to the particularity of the glyphosate industry, the belt filter and the rotary kiln need to be made of 316L stainless steel materials, and the storage tank is made of glass fiber reinforced plastic materials. The crystal liquid transfer tank, the mother liquid intermediate tank, the secondary recycling washing tank, the primary recycling washing tank, the steam condensate collecting tank and other liquid levels in the automatic washing and drying device are interlocked to prevent overflowing; a liquid receiving box is arranged below the vacuum belt filter, and sealing water, dripping mother liquid and the like are collected to a secondary recycling washing tank, so that the environmental pollution is reduced.

An automatic cleaning and drying device in the production process of glyphosate technical product, a crystallization kettle 1 is connected with a crystallization liquid transfer tank 2 through a centrifugal pump 1-1, the crystallization liquid transfer tank 2 is connected with a first-stage vacuum belt filter 3 through a discharge pump 2-1, the first-stage vacuum belt filter 3 is connected with a mother liquid tank 5 through a gas-liquid separation tank I4-1, the mother liquid tank 5 is connected with a second-stage vacuum belt filter 6, the second-stage vacuum belt filter 6 is connected with a rotary kiln 8 through a hopper 7, and the rotary kiln 8 is connected to a finished product bin 10 through a crusher 9.

The second-stage vacuum belt filter 6 is connected with a secondary recycling washing water tank 12 through a gas-liquid separation tank II 4-2, and the secondary washing water tank 12 is connected with a mother liquid tank 5 through a secondary washing water tank pump 12-1.

The two-stage vacuum belt filter 6 is respectively connected with a water ring vacuum pump 14 through a washing water distributor 11 and a gas-liquid separation tank II 4-2, and the water ring vacuum pump 14 is connected with a steam condensate collecting tank 15.

The second-stage vacuum belt filter 6 is also connected with a primary recycling washing water tank 13 through a washing water distributor 11, and the primary recycling washing water tank 13 is connected with a secondary recycling washing water tank 12 through a primary washing water tank pump 13-1.

The rotary kiln 8 is connected with a cyclone dust collector 16, and the cyclone dust collector 16 is connected with a finished product bin 10 through a conveying auger 17; the cyclone dust collector 16 is also connected with a bag-type dust collector 18, and the bag-type dust collector 18 is connected to a tail gas absorption device.

The utility model discloses wash the material mode with former centrifuge dehydration and reform transform into vacuum belt filter and wash the material to automatic commentaries on classics material device and automatic defeated material drying equipment have been increased. Transforming a discharging system of a crystallization kettle, connecting 10 discharging pipes of the crystallization kettle (5000L) into a group (4 groups in total) by using stainless steel pipes (DN 100 and 316L), transferring the crystallization liquid into two crystallization liquid transfer tanks (20000L) by using centrifugal pumps (AZ 65-50-125/5.5KW, the flow rate is 30m, the lift is 20 m), and then connecting the discharging stainless steel pipes (DN 100 and 316L) of the two crystallization liquid transfer tanks by using the centrifugal pumps (AZ 80-50-400, the flow rate is 12.5m, the lift is 20 m) to transfer to a one-stage vacuum belt filter (3 m multiplied by 13m, DV 13/1300). Separating mother liquor from a primary vacuum belt filter (3 m multiplied by 13m, DV 13/1300) through a vacuum pump (2 BE1258-55 KW), transferring separated permeate to a mother liquor intermediate tank (phi 2600 x 4300 glass steel tank) through a gas-liquid separation tank, transferring to a mother liquor settling tank (phi 5000 x 6000 glass steel) for settling through a centrifugal pump (CQB 65-50-160, with the flow rate of 25m for powder spraying/h and the lift of 20 m), conveying filtered wet powder to a hopper (2000 x 1500 x 3000, 316L stainless steel), flushing the filtered wet powder to a secondary vacuum belt filter (3 m multiplied by 13m, DV 13/1300) with secondary reuse washing water, and washing the materials; permeate separated from the front end of the two-stage vacuum belt filter (3 m multiplied by 13m, DV 13/1300) passes through a gas-liquid separation tank and is recycled to a secondary recycling washing water tank (phi 2600 multiplied by 4300 glass steel tank), and when the content of mother liquor is more, the permeate is transferred to a mother liquor intermediate tank (phi 2600 multiplied by 4300 glass steel tank) through a bypass and is supplemented by primary recycling washing water; a material washing water distribution pipe (3 m316L stainless steel pipe and a water outlet nozzle with the width of 20 mm) is arranged in the middle of the secondary vacuum belt filter (3 m multiplied by 13m, DV 13/1300), the steam condensate is cooled and transferred to a water ring vacuum pump (2 BE1258-55 KW) through a flowmeter to BE circulated to a steam condensate collecting tank (phi 2140X 2500 waste reaction kettle), then the steam condensate is transferred to the material washing water distribution pipe through a magnetic pump (CQB 50-40-160F with the flow of 12.5 lift 32 m) to BE washed, and permeate separated from the middle and rear ends is transferred to a primary reuse water washing tank (phi 2600X 4300 glass steel tank) through a gas-liquid separation tank to BE used for supplementing water of secondary reuse water washing and crystal water of a dealcoholization process. Conveying the wet powder filtered by the secondary vacuum belt filter to a hopper (2000 x 1500 x 3000, 316L stainless steel), conveying the wet powder to a rotary kiln (ZTG 18 x 140C type rotary drum dryer) through an auger, heating and drying the wet powder, conveying the smaller granular glyphosate to a dust remover through induced air, conveying light component substances to an absorption device, and conveying heavy component glyphosate to a finished product bin through the auger; larger glyphosate particles pass through a vibrating screen from the rear end of the rotary kiln, fine glyphosate particles pass through a scraper conveyor to a finished product bin, and large glyphosate particles pass through a crusher and are packaged and returned to a crystallization kettle for recovery.

Claims

1. The utility model provides an automatic washing drying device in glyphosate raw medicine production process, a serial communication port, crystallization kettle (1) is connected with crystallization liquid transfer tank (2) through centrifugal pump (1-1), crystallization liquid transfer tank (2) are connected with one-level vacuum belt filter (3) through discharge pump (2-1), one-level vacuum belt filter (3) are connected with mother liquid tank (5) through gas-liquid separation jar (4-1), mother liquid tank (5) are connected with second grade vacuum belt filter (6), second grade vacuum belt filter (6) are connected with rotary kiln (8) through hopper (7), rotary kiln (8) are connected to finished product feed bin (10) through rubbing crusher (9).

2. The automatic cleaning and drying device in the glyphosate technical production process according to claim 1, characterized in that the secondary vacuum belt filter (6) is connected with a secondary recycling water washing tank (12) through a gas-liquid separation tank II (4-2), and the secondary recycling water washing tank (12) is connected with a mother liquor tank (5) through a secondary water washing tank pump (12-1).

3. The automatic cleaning and drying device in the glyphosate technical production process is characterized in that a two-stage vacuum belt filter (6) is respectively connected with a water ring vacuum pump (14) through a washing water distributor (11) and a gas-liquid separation tank II (4-2), and the water ring vacuum pump (14) is connected with a steam condensate collecting tank (15).

4. The automatic cleaning and drying device for glyphosate technical production process according to claim 3, wherein the secondary vacuum belt filter (6) is further connected with a primary recycling water washing tank (13) through a water distributor (11), and the primary recycling water washing tank (13) is connected with a secondary recycling water washing tank (12) through a primary water washing tank pump (13-1).

5. The automatic cleaning and drying device in the glyphosate technical production process is characterized in that the rotary kiln (8) is connected with a cyclone dust collector (16), and the cyclone dust collector (16) is connected with a finished product bin (10) through a material conveying auger (17); the cyclone dust collector (16) is also connected with a bag-type dust collector (18), and the bag-type dust collector (18) is connected to a tail gas absorption device.