CN210964174U - Candle filter device for treating taurine crude product mother liquor - Google Patents

Abstract

The utility model relates to a handle candle filter device of taurine crude mother liquor, including material jar and filter barrel, the bottom and circulating pump, material inlet valve and the candle filter barrel of material jar communicate through the pipeline in proper order, the inside parallelly connected filter core of a plurality of that is equipped with of candle filter barrel, the filter core passes through pipeline and collector tube intercommunication, filter out material pipe intercommunication through two overnight parallels between filter core and the collector tube, be equipped with the filtrate outlet valve on the material pipe is filtered out to overnight, collector tube and clear solution jar pass through the pipeline intercommunication, collector tube and candle filter barrel bottom still communicate through pipeline and material tank top circulation respectively. The utility model discloses effectively get rid of impurity such as suspended solid, flocculus, the polymer ropy thing in the taurine crude mother liquor, muddy liquid becomes through decompression concentration after the clear transparent state, makes taurine appear smoothly from the mother liquor, has solved bag filter and filter-pressing formula PA material precision filter and can not effectively intercept the problem of impurity in the mother liquor.

Description

Candle filter device for treating taurine crude product mother liquor

Technical Field

The utility model belongs to the technical field of taurine crude product mother liquor impurity separation equipment, in particular to handle candle filter device of taurine crude product mother liquor.

Background

The candle type filtration is an advanced, safe, high-efficiency and pollution-free novel filtration mode, and mainly comprises a cylinder body, a filter element, filter cloth, a filter aid, a control system, accessories and the like. The filter is characterized in that 1 to more than one filter element is arranged in a cylinder body of the filter, special filter cloth selected according to the characteristics of raw material liquid is sleeved on the filter element (filter aid such as activated carbon, diatomite and the like needs to be added into some special raw material liquid), solid substances in the liquid are gradually accumulated on the surface of the filter cloth when the liquid passes through the filter cloth, and a so-called filter cake layer is formed when the solid substances reach a certain thickness. The filter cake layer can effectively intercept particle impurities, suspended matters, floccules and the like in the liquid, so that the filtrate becomes clear and the filtering effect required by production is achieved. After normally filtering a period of time, "filter cake layer" surpasss certain thickness, and the rate that the filtrating passes through "filter cake layer" reduces, and filtration efficiency variation just needs to clear away "filter cake layer", and after "filter cake layer" was pressed dry to the malleation, the system can carry out the back-blowing according to the signal that pressure sensor provided and take off the cake operation, opens the barrel bottom valve simultaneously and arranges the sediment, then rebuilds new "filter cake layer", begins the filtration cycle of a new round.

At present, candle type filtration gradually replaces filter-press type and bag type filtration to become mainstream filtration modes, wherein the filter medium is repeatedly utilized for many times, so that a large amount of filtration consumables are saved; the cylinder is sealed and firm, so that no leakage is ensured in the production process; the microcomputer is used for automatic whole-course control, so that the production continuity of enterprises is well kept, the production efficiency is improved, labor is saved, and meanwhile, the risk of production accidents is greatly reduced. Can be widely applied to the solid-liquid separation and filtration fields of petroleum, plastics, electroplating, chemical engineering, ceramics, pharmacy, sugar manufacturing and other industries.

For decades, it has been known that crude mother liquor obtained by hydroxylating, ammonolysis, concentrating under reduced pressure and neutralizing ethylene oxide as a starting material in the production process of taurine contains various components such as sodium isethionate, sodium sulfate, iminodiacetic acid sodium salt, ethylene glycol, polyethylene glycol and trace metal ions in addition to taurine as a main component (for example, Wujiang, proceedings of Hubei academy of Industrial science, 2004, 19, 23-26; Liufuming, trade of China chemical industry, 2013, 8, 120.). The mother liquor was pale yellow to tan in color and tended to be turbid. Particularly, byproducts such as ethylene glycol and polyethylene glycol generated in hydroxylation reaction and some high-molecular viscous impurities formed at high temperature and high pressure in ammonolysis reaction enter a mother liquor system, so that taurine in the mother liquor is difficult to separate out. In the experimental process, a bag filter, a pressure filtration type PA precision filter and the like are selected in sequence to filter the taurine mother liquor, and the filtering effect is not ideal. Heating a mixture of the taurine crude product mother liquor and the activated carbon, filtering the materials by using a PA pipe or a titanium rod or other filter element, selecting the filter element with low precision, and filtering a large amount of sticky substances from the filter element without filtering effect; select the filter core that the precision is high, the cartridge filter internal pressure is too big, perhaps glues thick thing impurity and directly attaches to the filter core surface, blocks up the passageway, and filter speed is very slow, is difficult to match the production progress.

Disclosure of Invention

In order to solve the technical problem, the utility model provides a handle candle filter device of taurine crude product mother liquor. The device is through circulation precoating, forms one deck active carbon filter cake layer on the filter cloth surface, and the filter cake layer can effectual interception granule impurity, suspended solid, flocculus, the polymer in the liquid glues thick thing etc. makes filtrating become the clarification to solve filter-pressing formula sack filter and can not effectively intercept the problem of impurity in the mother liquor.

The scheme of the utility model is that:

the utility model provides a handle candle filter device of taurine crude mother liquor, includes material jar and filter cylinder, the bottom and circulating pump, material import valve and the candle filter cylinder of material jar communicate in proper order through the pipeline, the inside parallelly connected filter core of a plurality of that is equipped with of candle filter cylinder, the filter core passes through pipeline and collector tube intercommunication, filter out material pipe intercommunication through two parallels overnight between filter core and the collector tube, filter out to be equipped with the filtrate outlet valve on the material pipe overnight respectively, collector tube and clear solution jar pass through the pipeline intercommunication, collector tube and candle filter cylinder bottom still communicate through pipeline and material tank top circulation respectively.

Preferably, a circulating valve and a sight glass are arranged between the liquid collecting pipe and the material tank, the bottom of the candle type filter cylinder body is circularly communicated with the top of the material tank through two pipelines, and a residual liquid discharging valve and an auxiliary residual liquid discharging valve are respectively arranged on the two pipelines.

Preferably, still be equipped with blowback inlet branch pipe, blowback gassing bleeder and washing bleeder on the collector tube, be equipped with the blowback admission valve on the blowback admission branch pipe, be equipped with the bleed valve on the blowback gassing bleeder, be equipped with the purge valve on the washing bleeder, blowback admission branch pipe communicates with compressed air source device through the relief pressure valve, compressed air source device still communicates with candle filter barrel through positive admission valve through the pipeline.

Preferably, the top of the filter cylinder is communicated with the top of the material tank through a pipeline, a residual liquid spraying valve is arranged between the top of the filter cylinder and the communicating pipeline of the top of the material tank, and a cylinder emptying valve is further arranged at the top of the filter cylinder.

Preferably, a clear liquid valve and a clear liquid flowmeter are further arranged between the liquid collecting pipe and the clear liquid tank.

Preferably, the bottom of the candle filter cylinder body is also provided with a slag discharge valve.

Preferably, still be equipped with the in-cylinder pressure gauge on the candle filter barrel, be equipped with the feeding manometer on the pipeline of candle filter barrel and material jar intercommunication.

Preferably, the surface of the filter element is sleeved with filter cloth.

Preferably, the inside of material jar is provided with coil pipe and agitator.

The utility model discloses beneficial effect:

1. the utility model provides a candle filter filtration system, which removes impurities such as particles, suspended matters, floccules, polymer sticky matters and the like in the crude taurine mother liquor, and ensures that taurine is smoothly separated out from the mother liquor through decompression and concentration after turbid liquid becomes a clear and transparent state; the device has the advantages of unique structure, small volume, high efficiency, low filtering cost, improved working efficiency and reduced labor intensity.

2. The utility model provides a pair of taurine crude product mother liquor candle filter device beats a certain amount of crude product mother liquor, active carbon earlier in the material jar when using, opens the agitator stirring, and steam heating is to about 70 ℃. And (3) starting a corresponding pump and a corresponding valve to enable the filter cylinder to be filled with the filtrate, enabling the filtrate to pass through the filter medium, enabling the granular activated carbon to stay on the surface of the filter cloth, uniformly forming a layer of filter cake along the surface shape of the filter tube, enabling the filtrate to flow out of the liquid collecting tube through the filtrate outlet valve and circulate back to the material tank, checking the condition of the circulating liquid through a sight glass, switching the corresponding valve after the circulating liquid is clear and transparent, and directly filtering the material in the mother liquid storage tank through the filter. After the filtration is finished, a part of the residual liquid which is not filtered is still left in the container, the part of the liquid which is not filtered can be pressed back to the material tank by compressed air until the filtrate is basically pressed dry, and the obtained filter cake can be attached to the surface of the filter element. And then compressed air is used for back flushing the filter element, the filter cloth is violently shaken under pulse back flushing air flow, and the surface of the filter cake is immediately cracked and falls off from the surface of the filter cloth. The filter elements are reasonably grouped, so that a plurality of filter elements can be back-blown at one time, and finally all filter cakes can completely and thoroughly fall off from the surfaces of the filter elements. After the filter cake falls off, a butterfly valve at the bottom is opened, the carbon slag is discharged, and the carbon slag is regenerated and put into the material tank for reuse once. The carbon slag which can not be reused is transferred to a hydroxylation working section for reuse. In order to prolong the service life of the filter cloth, the filter cloth should be cleaned after one or more filtration cycles are finished, so that particles staying in the pores of the fabric fall off.

3. The filter is a cluster, full-automatic and back-flushing filter, and is a high-grade system which is well designed and has reliable filtering effect. The problems that traditional filtering equipment such as a plate-and-frame filter press, a bag filter and the like has large filtering pressure, materials are not filtered, sticky materials are difficult to filter and the like are solved, and the filter is particularly suitable for filtering the materials with the properties such as crude taurine mother liquor.

Drawings

FIG. 1 is a schematic view of the apparatus of the present invention;

FIG. 2 is a diagram of a light transmittance measurement by UV-visible spectrophotometer;

wherein: 1-a material tank; 2-a material circulating pump; 3-material inlet valve; 4-inlet pressure gauge; 5-a filter cylinder; 6-a filter element; 7-filtrate outlet valve; 8-a liquid collecting pipe; 9-circulating valve; 10-a back-blowing air inlet valve; 11-a blowback air release valve; 12-a purge valve; 13-clear liquid valve; 14-clear liquid flow meter; 15-clear liquid storage tank; 16-view mirror; 17-pressure gauge in cylinder; 18-a raffinate spray valve; 19-a barrel blow-down valve; 20-residual liquid discharge valve; 21-auxiliary residual liquid discharge valve; 22-a slag discharge valve; 23-a compressed air source device; 24-a pressure relief valve; 25-positive inlet valve.

Detailed Description

The invention is further described with reference to the following examples, but the scope of the invention as claimed is not limited to the scope of the examples.

Example 1

As figure 1, the filter equipment of taurine mother liquor, including material jar 1 and filter barrel 5, the bottom of material jar 1 communicates through the pipeline in proper order with circulating pump 2, material import valve 3 and candle filter barrel 5, candle filter barrel 5 is inside to be equipped with the parallelly connected filter core 6 of a plurality of, filter core 6 passes through pipeline and collector tube 8 intercommunication, filter core 6 and collector tube 8 between through two overnight filter material pipes that parallel communicate, be equipped with filtrate outlet valve 7 on the filtrate discharging pipe respectively, collector tube 8 and clear solution jar 15 pass through the pipeline intercommunication, collector tube 8 and 5 bottoms of candle filter barrel still communicate through pipeline and 1 top circulation of material jar respectively.

Preferably, a circulating valve 9 and a viewing mirror 16 are arranged between the liquid collecting pipe 8 and the material tank 1, the bottom of the candle filter cylinder 5 is circularly communicated with the top of the material tank 1 through two pipelines, and a residual liquid discharging valve 20 and an auxiliary residual liquid discharging valve 21 are respectively arranged on the two pipelines.

Preferably, the liquid collecting pipe 8 is further provided with a back-blowing air inlet branch pipe, a back-blowing air outlet branch pipe and a cleaning branch pipe, the back-blowing air inlet branch pipe is provided with a back-blowing air inlet valve 10, the back-blowing air outlet branch pipe is provided with an air outlet valve 11, the cleaning branch pipe is provided with a cleaning valve 12, the back-blowing air inlet branch pipe is communicated with a compressed air source device 23 through a pressure reducing valve 24, and the compressed air source device 23 is further communicated with the candle filter cylinder body 5 through a positive air inlet valve 25 through a pipeline.

Preferably, the top of the filter cylinder 5 is communicated with the top of the material tank 1 through a pipeline, a residual liquid spray valve 18 is arranged between the top of the filter cylinder 5 and the communicating pipeline of the top of the material tank 1, and a cylinder vent valve 19 is further arranged at the top of the filter cylinder 5.

Preferably, a clear liquid valve 13 and a clear liquid flowmeter 14 are further arranged between the liquid collecting pipe 8 and the clear liquid tank 15.

Preferably, the bottom of the candle filter cylinder 5 is also provided with a slag discharge valve 22.

Preferably, still be equipped with an in-cylinder pressure gauge 17 on the candle filter barrel 5, be equipped with feeding pressure gauge 4 on the pipeline of candle filter barrel 5 and material jar 1 intercommunication.

Preferably, the surface of the filter element 6 is sleeved with filter cloth.

Preferably, a coil pipe and a stirrer are arranged inside the material tank 1.

In the structure, the circulating valve 9 and the clear liquid valve 13 are connected in parallel through the guide pipe, the circulating filtrate condition is checked through the sight glass 16, the filtrate is clear and transparent, at the moment, the active carbon is precoated on the surface of the candle filter element 6, a layer of active carbon precoating layer is formed, the circulating valve 9 is closed, the clear liquid valve 13 is opened, and clear liquid is collected through filter filtration. The addition of the activated carbon is in direct proportion to the filtering area of the candle filter element 6, and the proportion is as follows: 3kg per square meter, blowing residual liquid in the cylinder through the compressed air positive air inlet valve 25 after filtering is finished, connecting the filter cylinder 5 with the first end of the residual liquid discharge valve 21 through a pipeline, connecting the second end of the residual liquid discharge valve 21 with the second end of the material tank 1 through a conduit, pressing the residual liquid in the filter cylinder 5 back into the material tank 1, and drying an activated carbon layer pre-coated on the surface of the filter element 6; one end of the liquid collecting pipe 8 is connected with one end of the back-blowing air inlet valve 10 through a guide pipe, an active carbon layer pre-coated on the surface of the filter element 6 is discharged through back blowing, and the active carbon is discharged through the slag discharge port 22 and can be recycled, namely secondary carbon. One end of the liquid collecting pipe 8 is connected with one end of the cleaning valve 12 through a guide pipe, soft water for production is connected, and the filter element 6 and the filter cloth in the filter cylinder 5 are backwashed.

Example 2

In the candle filter filtration apparatus according to the present example, the secondary carbon discharged from the slag discharge port 22 was put into the material tank 1 again and reused in the experiment of example 1.

On the basis of the above embodiments, the present embodiment will explain the experimental data of the candle filter device of the present invention in detail.

Application example one:

in the embodiment, the filtering area of a candle filter is 3 square meters, 6 filter elements are arranged in a cylinder, 1500L mother liquor and 9kg of fresh activated carbon are added into a 2000L enamel material tank in a workshop, the mixture is uniformly stirred, a candle filter filtering device and corresponding valves are adjusted to perform precoating circulation, a pressure displayed by a feed valve 3 to a pressure gauge 4 is adjusted to be 0.3MPa, an operation test is carried out, the corresponding valves are switched after precoating is finished, filtered clear liquid enters a clear liquid storage tank 15, the flow of the clear liquid is checked through a clear liquid flowmeter 14, after filtering is finished, a positive air inlet valve 25 is opened to blow residual liquid into the material tank until no residual liquid is basically pressed out, the activated carbon layer is basically pressed dry, and a reverse blowing air inlet valve 10 is opened to reversely blow off a filter cake layer to be discharged from a slag discharge port.

Application example two:

the experiment was repeated using the activated carbon discharged in application example one.

The experimental results are as follows:

(1) the filtered mother liquor is changed from yellow and turbid into light yellow, clear and transparent;

(2) after being placed for two months, the untreated stock solution has obvious precipitates and floccules, the treated mother solution is still clear and transparent, the mother solution filtered by the secondary carbon is yellow to some extent, and the filtrate is clear and transparent.

And (3) analysis results:

the transmittance was measured by ultraviolet-visible spectrophotometry, and the results are shown in FIG. 2.

(1) At a visible light region of 400 nm, the light transmittance of the stock solution (numbered 0) is 78%, samples filtered for 30 minutes and 60 minutes by using fresh activated carbon are respectively taken, the numbers are 1 and 2, and the light transmittance is 95.0% and 96.1%; respectively taking samples after 30-minute filtration, 60-minute filtration and 90-minute filtration by using mother liquor filtered by secondary carbon, wherein the serial numbers are 3, 4 and 5, the light transmittance is 93.2%, 93.6% and 93.5%, and the data show that the secondary carbon also has a good impurity removal effect;

(2) at the position of 450-800 nm, the average light transmittance of the stock solution is lower than 90%, while the light transmittance of the filtrate is almost 100%, and the overall situation is in sharp contrast with that of the stock solution.

Application example three:

putting 1500L raw mother liquor into a 2000L enamel reaction kettle, detecting the taurine content to be 16.5%, heating the steam to 80-90 ℃, removing water under reduced pressure at the vacuum degree of-0.07 MPa, stopping reduced pressure distillation when the sampling detects the taurine content to be 35%, naturally cooling to room temperature, centrifuging and drying to obtain 120kg of crude taurine solid with the yield of 48.5% and light yellow color.

Putting the mother liquor after 1500L filtration treatment into a 2000L enamel reaction kettle, detecting the content of taurine to be 16.5%, and operating according to the same conditions to obtain 180kg of crude taurine solid with yield of 72.7% and color close to white.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (9)

1. The utility model provides a handle candle filter device of crude taurine mother liquor, includes material jar (1) and filter cylinder (5), its characterized in that: the bottom of material jar (1) communicates through the pipeline in proper order with circulating pump (2), material import valve (3) and candle filter barrel (5), candle filter barrel (5) inside is equipped with a plurality of filter core (6) that connect in parallel, filter core (6) communicate through pipeline and collecting tube (8), filter out the material pipe intercommunication through two overnight parallels between filter core (6) and collecting tube (8), filter out to be equipped with filtrate outlet valve (7) on the material pipe overnight respectively, collecting tube (8) and clear liquid jar (15) communicate through the pipeline, collecting tube (8) and candle filter barrel (5) bottom still communicate through pipeline and material jar (1) top circulation respectively.

2. The candle filter device for processing crude taurine mother liquor according to claim 1, wherein: a circulating valve (9) and a sight glass (16) are arranged between the liquid collecting pipe (8) and the material tank (1), the bottom of the candle type filter cylinder body (5) is circularly communicated with the top of the material tank (1) through two pipelines, and a residual liquid discharging valve (20) and an auxiliary residual liquid discharging valve (21) are respectively arranged on the two pipelines.

3. The candle filter device for processing crude taurine mother liquor according to claim 1, wherein: still be equipped with blowback inlet branch pipe, blowback gassing bleeder and wash the bleeder on collecting main (8), be equipped with blowback admission valve (10) on the blowback admission branch pipe, be equipped with bleed valve (11) on the blowback gassing bleeder, be equipped with cleaning valve (12) on the washing bleeder, blowback admission branch pipe is through relief pressure valve (24) and compressed air source device (23) intercommunication, compressed air source device (23) still communicate through positive admission valve (25) and candle filter barrel (5) through the pipeline.

4. The candle filter device for processing crude taurine mother liquor according to claim 1, wherein: the top of the filter cylinder body (5) is communicated with the top of the material tank (1) through a pipeline, a residual liquid spraying valve (18) is arranged between the top of the filter cylinder body (5) and the communicating pipeline of the top of the material tank (1), and a cylinder body emptying valve (19) is further arranged at the top of the filter cylinder body (5).

5. The candle filter device for processing crude taurine mother liquor according to claim 1, wherein: a clear liquid valve (13) and a clear liquid flowmeter (14) are also arranged between the liquid collecting pipe (8) and the clear liquid tank (15).

6. The candle filter device for processing crude taurine mother liquor according to claim 1, wherein: and a slag discharge valve (22) is also arranged at the bottom of the candle type filter cylinder body (5).

7. The candle filter device for processing crude taurine mother liquor according to claim 1, wherein: still be equipped with a section of thick bamboo on candle filter barrel (5) manometer (17), be equipped with feeding manometer (4) on the pipeline of candle filter barrel (5) and material jar (1) intercommunication.

8. The candle filter device for processing crude taurine mother liquor according to claim 1, wherein: and the surface of the filter element (6) is sleeved with filter cloth.

9. The candle filter device for processing crude taurine mother liquor according to claim 1, wherein: and a coil pipe and a stirrer are arranged in the material tank (1).

Images