CN210103480U - Polyolefin magnesium titanium catalyst production residue processing system - Google Patents
Polyolefin magnesium titanium catalyst production residue processing system Download PDFInfo
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- CN210103480U CN210103480U CN201920477859.XU CN201920477859U CN210103480U CN 210103480 U CN210103480 U CN 210103480U CN 201920477859 U CN201920477859 U CN 201920477859U CN 210103480 U CN210103480 U CN 210103480U
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Abstract
The utility model relates to a polyolefin magnesium titanium catalyst production residue treatment system, which comprises a hydrolysis device, an oil-water separation device, a grain slag heating device, a first solid-liquid separation device, an oil removal device, a neutralization device, a second solid-liquid separation device, a steam stripping device, an evaporative crystallization device, a magnesium removal device and an organic matter removal device; the hydrolysis device is communicated with the oil-water separation device; the oil-water separation device is communicated with the grain slag heating device; the grain slag heating device is communicated with the first solid-liquid separation device; the first solid-liquid separation device is communicated with the oil removal device; the oil removing device is communicated with the neutralizing device; the neutralization device is communicated with the second solid-liquid separation device; the second solid-liquid separation device is communicated with the stripping device; the steam stripping device is communicated with the evaporative crystallization device; the evaporative crystallization device is respectively communicated with the magnesium removal device and the organic matter removal device; the scheme provided by the utility model can reduce the residual chlorine-containing titanium-containing compound in the production process of the polyolefin magnesium titanium catalyst.
Description
Technical Field
The utility model belongs to the technical field of polyolefin magnesium titanium is catalyst production residue processing, concretely relates to polyolefin magnesium titanium is catalyst production residue processing system.
Background
The polyolefin catalyst has the characteristics of high catalytic efficiency, strong orientation capability, adjustable particle size, good fluidity and the like, is used in more than 30 ring-pipe sleeving devices at home and abroad and other continuous or intermittent Process Polypropylene (PP) devices at present, and is developed into a series of products; however, in the production of the magnesium-titanium-based polyolefin catalyst, chlorine-containing titanium-containing magnesium-containing compounds, organic matter residues and defective magnesium-titanium-based polypropylene catalysts are discharged, and the chlorine-containing titanium-containing compounds in the materials are decomposed and release heat when being heated or meeting water, and emit toxic corrosive smoke gas, so that the materials have strong corrosivity, and therefore, the residues and the defective magnesium-titanium-based polypropylene catalysts belong to hazardous waste and are difficult to effectively treat. Therefore, the development of a treatment process capable of recycling the residues and the defective magnesium-titanium polypropylene catalysts is of great significance.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a polyolefin magnesium titanium system catalyst production residue processing system, it has solved the problem that contains chlorine titanium and contain harmful substance such as compound, organic matter residue, defective product that discharges in the production of current magnesium titanium system polyolefin catalyst.
In order to solve the technical problem existing in the above, the utility model discloses a following scheme:
a polyolefin magnesium-titanium catalyst production residue treatment system comprises a hydrolysis device, an oil-water separation device, a grain slag heating device, a first solid-liquid separation device, an oil removal device, a neutralization device, a second solid-liquid separation device, a steam stripping device, an evaporative crystallization device, a magnesium removal device and an organic matter removal device; the hydrolysis device is communicated with the inlet of the oil-water separation device; the outlet of the oil-water separation device is communicated with the inlet of the grain slag heating device; the outlet of the grain slag heating device is communicated with the inlet of the first solid-liquid separation device; the outlet of the first solid-liquid separation device is communicated with the inlet of the oil removal device; the outlet of the oil removing device is communicated with the inlet of the neutralizing device; the outlet of the neutralization device is communicated with the inlet of the second solid-liquid separation device; the outlet of the second solid-liquid separation device is communicated with the inlet of the stripping device; the outlet of the stripping device is communicated with the inlet of the evaporative crystallization device; the first outlet of the evaporative crystallization device is communicated with the inlet of the magnesium removal device, and the second outlet of the evaporative crystallization device is communicated with the organic matter removal device.
Further, the polyolefin magnesium titanium catalyst production residue treatment system also comprises an oil collection device; the oil collecting device is respectively communicated with the oil-water separating device and the oil removing device; the oil collecting device is used for collecting the floating oil of the oil-water separating device and the oil removing device.
Further, the polyolefin magnesium titanium catalyst production residue treatment system also comprises a tail gas absorption device; the tail gas absorption device is respectively communicated with the oil removal device, the steam stripping device and the evaporative crystallization device; the tail gas absorption device is used for absorbing the tail gas of the oil removal device, the steam stripping device and the evaporative crystallization device.
Further, the polyolefin magnesium titanium catalyst production residue treatment system also comprises a titanium dioxide collection device; the titanium dioxide collecting device is communicated with the first solid-liquid separation device; the titanium dioxide collecting device is used for recovering the titanium dioxide of the first solid-liquid separation device.
Further, the first solid-liquid separation device is also communicated with the hydrolysis device so as to return washing water in the first solid-liquid separation device to the hydrolysis device.
Further, the second solid-liquid separation device is also communicated with the grain slag heating device so as to reflux the titanium dioxide in the second solid-liquid separation device to the grain slag heating device.
Further, the magnesium removing device is also communicated with the neutralization device, so that the mother liquor in the magnesium removing device flows back to the neutralization device.
Further, the first solid-liquid separation device and the second solid-liquid separation device are cluster filters.
Further, the stripping device and the evaporative crystallization device are integrated into an integrated device; the evaporative crystallization device adopts an MVR device; the evaporative crystallization unit is stripped with steam generated by evaporation.
Further, the tail gas absorption device is an adsorption device, a catalytic oxidation device, a compression condensing device or an incineration device; and/or the organic matter removing device is a biochemical treatment device, a membrane bioreactor MBR, an organic solvent resistant membrane or a rectification device.
The treatment process for the polyolefin magnesium titanium catalyst production residue provided by the utility model has the following beneficial effects:
firstly, hydrolyzing the residues, and then combining a hydrolysis device, an oil-water separation device, a water slag heating device, a first solid-liquid separation device, an oil removal device, a neutralization device, a second solid-liquid separation device, a stripping device, an evaporative crystallization device, a magnesium removal device and an evaporative condensate liquid organic matter removal device, wherein finally the produced inorganic chlorine salt reaches the grade which can be used as industrial raw materials, and the purity of titanium dioxide (dry basis) is more than 99 percent and reaches the grade which can be applied to titanium dioxide raw materials; the purity of the magnesium hydroxide reaches the requirement of industrial magnesium hydroxide II qualified products (HG/T3607-2007); the wastewater after treatment reaches the water quality standard of the water supply of an open circulating cooling water system in the quality of industrial water for recycling urban sewage (GB/T19923-2005).
Secondly, a mode of combining hydrolysis and grain slag heating processes is adopted, so that the granularity and the crystal form of titanium dioxide solid generated by hydrolysis can meet the requirements of industrial production raw material manufacturers, and the method is also suitable for different solid-liquid separation processes.
Thirdly, in the neutralization process, the pH value is controlled to be 6-10.5, so that the generation of magnesium hydroxide is controlled as far as possible in the process of ensuring the titanium compound to generate titanium dioxide.
Fourthly, in the MVR evaporation process, magnesium ions in the mother liquor are removed by a process of adding alkali and then carrying out air flotation, so that the purity of the sodium chloride crystal salt is ensured.
Drawings
FIG. 1: the utility model relates to a process flow chart for treating residues generated in the production of polyolefin magnesium-titanium catalysts;
FIG. 2: the utility model relates to a polyolefin magnesium titanium catalyst production residue processing system schematic diagram.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings:
FIG. 2 shows a polyolefin magnesium titanium catalyst production residue treatment system, which comprises a hydrolysis device, an oil-water separation device, a grain slag heating device, a first solid-liquid separation device, an oil removal device, a neutralization device, a second solid-liquid separation device, a stripping device, an evaporative crystallization device, a magnesium removal device and an organic matter removal device; the hydrolysis device is communicated with the inlet of the oil-water separation device; the outlet of the oil-water separation device is communicated with the inlet of the grain slag heating device; the outlet of the grain slag heating device is communicated with the inlet of the first solid-liquid separation device; the outlet of the first solid-liquid separation device is communicated with the inlet of the oil removal device; the outlet of the oil removing device is communicated with the inlet of the neutralizing device; the outlet of the neutralization device is communicated with the inlet of the second solid-liquid separation device; the outlet of the second solid-liquid separation device is communicated with the inlet of the stripping device; the outlet of the stripping device is communicated with the inlet of the evaporative crystallization device; a first outlet of the evaporative crystallization device is communicated with an inlet of the magnesium removal device, and a second outlet of the evaporative crystallization device is communicated with the organic matter removal device; the hydrolysis device is used for hydrolyzing the polyolefin catalyst production residues and defective products; the oil-water separation device is used for carrying out oil-water separation on the mixed liquid; the grain slag heating device is used for heating the mixed liquid; the first solid-liquid separation device and the second solid-liquid separation device are respectively used for solid-liquid separation of the mixed liquid; the oil removing device is used for removing floating oil in the mixed liquid; the neutralization device is used for neutralizing the acid-containing liquid from the oil removal device; the stripping device and the evaporative crystallization device are respectively used for evaporating and crystallizing the neutralized inorganic chloride solution to form inorganic chloride; the magnesium removing device is used for enabling magnesium ions to generate precipitates and separating the precipitates through the separating device; the organic matter removing device is used for removing organic matters in the condensate; by adopting the scheme, harmful substances such as chlorine-containing titanium-containing magnesium-containing compounds, organic matter residues, defective products and the like discharged in the production of the existing magnesium-titanium polyolefin catalyst can be reduced; the system has reasonable structure and is convenient to install and maintain.
Preferably, in combination with the above solution, as shown in fig. 2, as an embodiment of the present invention, the polyolefin magnesium titanium catalyst production residue treatment system further includes an oil collection device; the oil collecting device is respectively communicated with the oil-water separating device and the oil removing device; the oil collecting device is used for collecting the floating oil of the oil-water separating device and the oil removing device.
Preferably, in combination with the above solution, as shown in fig. 2, as an embodiment of the present invention, the polyolefin magnesium titanium catalyst production residue treatment system further includes a tail gas absorption device; the tail gas absorption device is respectively communicated with the oil removal device, the steam stripping device and the evaporative crystallization device; the tail gas absorption device is used for absorbing the tail gas of the oil removal device, the steam stripping device and the evaporative crystallization device.
Preferably, in combination with the above solution, as shown in fig. 2, as an embodiment of the present invention, the polyolefin magnesium titanium catalyst production residue treatment system further includes a titanium dioxide collection device; the titanium dioxide collecting device is communicated with the first solid-liquid separation device; the titanium dioxide collecting device is used for recovering the titanium dioxide of the first solid-liquid separation device.
Preferably, in combination with the above solution, as shown in fig. 2, as an embodiment of the present invention, the first solid-liquid separation device is further communicated with the hydrolysis device to return the washing water in the first solid-liquid separation device to the hydrolysis device.
Preferably, in combination with the above solution, as shown in fig. 2, as an embodiment of the present invention, the second solid-liquid separation device is further communicated with the granulated slag heating device to reflux the titanium dioxide in the second solid-liquid separation device to the granulated slag heating device.
Preferably, in combination with the above scheme, as shown in fig. 2, as an embodiment of the present invention, the magnesium removing device is further communicated with the neutralization device to reflux the mother liquor in the magnesium removing device to the neutralization device.
Preferably, in combination with the above solution, as shown in fig. 2, as an embodiment of the present invention, the first solid-liquid separation device and the second solid-liquid separation device are cluster filters.
Preferably, in combination with the above, as an embodiment of the present invention, as shown in fig. 2, the stripping device and the evaporative crystallization device are integrated into an integrated device; the evaporative crystallization device adopts an MVR device; the evaporative crystallization unit is stripped with steam generated by evaporation.
Preferably, in combination with the above solution, as shown in fig. 2, as an embodiment of the present invention, the tail gas absorption device is an adsorption device, a catalytic oxidation device, a compression condensing device or an incineration device; and/or the organic matter removing device is a biochemical treatment device, a membrane bioreactor MBR, a special membrane organic solvent-resistant membrane or a rectification device.
FIG. 1 and FIG. 2 show a polyolefin magnesium titanium catalyst production residue treatment process, which comprises the following steps:
s1, discharging polyolefin catalyst production residues and defective products into a hydrolysis device, adding one or more hydrolysis liquids for hydrolysis to obtain a mixed solution containing 0-90% by mass of hydrochloric acid, titanium dioxide solids, magnesium ions or magnesium compounds, soluble titanium compounds, organic matters and the like, and further, the hydrolysis liquids are 0-37% by mass of hydrochloric acid solution, 0-37% by mass of water washing liquid generated by washing titanium dioxide containing hydrochloric acid, 0-37% by mass of filtrate obtained after separating titanium dioxide containing hydrochloric acid, 0-37% by mass of tail gas absorption liquid containing hydrochloric acid or 0-37% by mass of hydrolysis liquid containing hydrochloric acid;
s2, feeding the mixed liquid hydrolyzed in the step S1 into an oil-water separation device, standing and separating floating oil, and discharging the floating oil to an oil collection tank;
s3, after removing the floating oil in the step S2, putting the mixed liquid into a grain slag heating device, and heating to 30-110 ℃;
s4, carrying out solid-liquid separation on the mixed liquid obtained in the step S3 through a first solid-liquid separation device, recovering the obtained titanium dioxide, and enabling the obtained titanium dioxide to enter the step S5, and further enabling filter cake washing water in the first solid-liquid separation device to return to a hydrolysis device or enter the subsequent step S5; further, after the mixed liquid obtained in the step S3 is subjected to solid-liquid separation by a first solid-liquid separation device, the obtained titanium dioxide is recovered;
s5, feeding the acid-containing liquid obtained in the step S4 into an oil removing device to further remove residual oil in the acid-containing liquid, further, leading tail gas generated in the oil removing process to a tail gas absorption device, wherein the oil removing device in the step S5 is a closed nano air flotation oil removing device; specifically, the tail gas absorption device is an adsorption device, a catalytic oxidation device, a compression condensing device or an incineration device; residual oil removed by the oil removing device is recycled to the oil collecting tank;
s6, feeding the acid-containing liquid obtained after oil removal in the step S5 into a neutralization device, and adding at least one basic compound with the same cation to neutralize the acid-containing liquid, wherein the basic compound added in the step S6 is specifically: alkali, carbonate or ammonia, specifically, the alkaline compound is liquid ammonia or ammonia water; specifically, the basic compound to be neutralized is preferably one of sodium hydroxide, potassium hydroxide, or ammonia; the pH value control range of the neutralization process is 6-10.5, and preferably the pH value control range of the neutralization process is 6-9;
s7, producing solid titanium dioxide from the neutralized liquid obtained in the step S6, and separating the titanium dioxide by a second solid-liquid separation device, wherein the inorganic chloride solution separated by the second solid-liquid separation device enters the step S8 for treatment; further, the titanium dioxide obtained by separation in the second solid-liquid separation device in the step S7 returns to the grain slag heating device in the step S3; specifically, the second solid-liquid separation device is a cluster filter;
s8, feeding the inorganic chloride solution treated in the step S7 into a stripping device, and then feeding the inorganic chloride solution into an evaporative crystallization device to evaporate and crystallize to form inorganic chloride; specifically, in the step S8, the stripping device and the evaporative crystallization device are integrated into an integrated device, that is, the stripping device is provided with a stripping system; further, the evaporative crystallization device adopts an MVR device; the evaporative crystallization device carries out steam stripping by using steam generated by evaporation; recycling the non-condensable gas in the steam stripping and evaporative crystallization to a tail gas absorption device; specifically, the tail gas absorption device is an adsorption device, a catalytic oxidation device, a compression condensing device or an incineration device;
s9, discharging the mother liquor obtained after the treatment of the S8 step into a magnesium removing device, adding at least one alkaline compound with the same cation as that added in the S6 step, and separating magnesium ions generated precipitate through a separating device; specifically, in the step S9, the basic compound is alkali, carbonate, ammonia, specifically liquid ammonia or ammonia water, and preferably sodium hydroxide or potassium hydroxide; further, in the step S9, the mother liquor after magnesium removal in the magnesium removal device can return to the neutralization device for recycling;
s10, feeding the condensate generated in the treatment process of the step S8 into an organic matter removing device to remove organic matters in the condensate; specifically, the organic matter removing device in the step S10 is a biochemical treatment device, a membrane bioreactor MBR, an organic solvent resistant membrane or a rectification device, and preferably a ceramic MBR device is used.
The utility model provides a polyolefin magnesium titanium catalyst production residue treatment process; the method can effectively solve the problem that harmful substances such as chlorine-containing titanium-containing magnesium-containing compounds, organic matter residues and defective magnesium-titanium polypropylene catalysts are discharged in the production of the existing polyolefin magnesium-titanium catalysts, and can realize the resource recycling of the chlorine-containing titanium-containing magnesium-containing compounds, the organic matter residues and the defective magnesium-titanium polypropylene catalysts generated in the production of the polyolefin magnesium-titanium catalysts and reduce the environmental pollution.
Preferably, in combination with the above solution, as an embodiment of the present invention, a titanium tetrachloride-containing residue discharged from a DQ catalyst manufacturing company is used to exemplify the present solution, and the residue mainly comprises: catalyst fine powder (inorganic substance: Ti, Mg), titanium tetrachloride and titanium alkoxide thereof, organic substance (oil, hexane, ethanol, toluene, etc.); the specific treatment process comprises the following steps:
1. adding 10-30% by mass of dilute hydrochloric acid into the residue for hydrolysis, wherein the main components after hydrolysis comprise oil slick, titanium dioxide, 25-30% hydrochloric acid, titanium-containing compounds (titanic acid, metatitanic acid, complex compounds thereof and the like), magnesium ions, hexane, ethanol, toluene and the like;
2. the mixed liquid of the acid liquid and the titanium dioxide after hydrolysis enters an oil-water separation device, standing is carried out to separate floating oil, and the floating oil is discharged to an oil collection tank;
3. the mixture of the acid liquor and the titanium dioxide after oil removal is subjected to solid-liquid separation through a first solid-liquid separation device, wherein the first solid-liquid separation device can be selected as a plate-frame filtering device, the titanium dioxide is separated from the acid liquor and washed, the obtained titanium dioxide is recovered, the purity of the obtained titanium dioxide (dry basis) is more than 99%, and filter cakes and filter cloth washing water in the plate-frame filtering device enter a hydrolysis device;
4. the acid-containing liquid filtered by the plate frame enters an oil removal device through a pump, and residual oil in the acid liquid is further removed in an air floatation mode; the oil removing device can be an air floatation oil removing tank;
5. the acid liquor obtained after air flotation deoiling enters a neutralization device, and is neutralized by adding 45% sodium hydroxide solution, and the water quality after neutralization is as follows:
water quality after neutralization in Table 1
6. Separating titanium dioxide from the neutralized solid-liquid mixture by a cluster filter, feeding the obtained titanium dioxide into a grain slag heating device, and feeding the clear liquid into an MVR evaporation crystallization device;
7. the clear liquid is evaporated and crystallized by an MVR evaporation and crystallization device to form sodium chloride crystals, and the quality of the sodium chloride crystals is shown in the following table:
TABLE 2 quality of sodium chloride crystalline salts
9. The mother liquor in the MVR evaporation crystallization process is periodically discharged into an air floatation magnesium removal device, sodium hydroxide solution is added, the pH value is adjusted to be more than 10, the generated magnesium hydroxide precipitate passes through the magnesium removal device, the magnesium removal device can be selected from air floatation magnesium removal separation, magnesium hydroxide forms a byproduct through a plate-frame filter and a drying device, and the quality of the magnesium hydroxide reaches the requirement of industrial magnesium hydroxide class II qualified products (HG/T3607-2007);
10. condensate generated in the MVR evaporation crystallization process enters a ceramic membrane MBR device, and the water quality condition of final reuse water is shown in the following table:
TABLE 3 quality of reuse water
The treatment process for the polyolefin magnesium titanium catalyst production residue provided by the utility model has the following beneficial effects:
firstly, hydrolyzing the residues, and then combining a hydrolysis device, an oil-water separation device, a water slag heating device, a first solid-liquid separation device, an oil removal device, a neutralization device, a second solid-liquid separation device, a stripping device, an evaporative crystallization device, a magnesium removal device and an evaporative condensate liquid organic matter removal device, wherein finally the produced inorganic chlorine salt reaches the grade which can be used as industrial raw materials, and the purity of titanium dioxide (dry basis) is more than 99 percent and reaches the grade which can be applied to titanium dioxide raw materials; the purity of the magnesium hydroxide reaches the requirement of industrial magnesium hydroxide II qualified products (HG/T3607-2007); the wastewater after treatment reaches the water quality standard of the water supply of an open circulating cooling water system in the quality of industrial water for recycling urban sewage (GB/T19923-2005).
Secondly, a mode of combining hydrolysis and grain slag heating processes is adopted, so that the granularity and the crystal form of titanium dioxide solid generated by hydrolysis can meet the requirements of industrial production raw material manufacturers, and the method is also suitable for different solid-liquid separation processes.
Thirdly, in the neutralization process, the pH value is controlled to be 6-10.5, so that the generation of magnesium hydroxide is controlled as far as possible in the process of ensuring the titanium compound to generate titanium dioxide.
Fourthly, in the MVR evaporation process, magnesium ions in the mother liquor are removed by a process of adding alkali and then carrying out air flotation, so that the purity of the sodium chloride crystal salt is ensured.
The present invention has been described in detail with reference to the accompanying drawings, and it is obvious that the present invention is not limited by the above embodiments, and various improvements of the method concept and the technical solution of the present invention can be made without modification, or the present invention can be directly applied to other occasions without modification, and is within the protection scope of the present invention.
Claims (10)
1. A polyolefin magnesium titanium catalyst production residue treatment system is characterized by comprising a hydrolysis device, an oil-water separation device, a grain slag heating device, a first solid-liquid separation device, an oil removal device, a neutralization device, a second solid-liquid separation device, a steam stripping device, an evaporative crystallization device, a magnesium removal device and an organic matter removal device; the hydrolysis device is communicated with an inlet of the oil-water separation device; the outlet of the oil-water separation device is communicated with the inlet of the grain slag heating device; the outlet of the grain slag heating device is communicated with the inlet of the first solid-liquid separation device; the outlet of the first solid-liquid separation device is communicated with the inlet of the oil removal device; the outlet of the oil removing device is communicated with the inlet of the neutralizing device; the outlet of the neutralization device is communicated with the inlet of the second solid-liquid separation device; the outlet of the second solid-liquid separation device is communicated with the inlet of the stripping device; the outlet of the stripping device is communicated with the inlet of the evaporative crystallization device; the first outlet of the evaporative crystallization device is communicated with the inlet of the magnesium removal device, and the second outlet of the evaporative crystallization device is communicated with the organic matter removal device.
2. The polyolefin magnesium titanium catalyst production residue processing system according to claim 1, further comprising an oil collection device; the oil collecting device is respectively communicated with the oil-water separating device and the oil removing device; the oil collecting device is used for collecting the floating oil of the oil-water separating device and the oil removing device.
3. The system for treating polyolefin magnesium titanium catalyst production residues according to claim 1, further comprising a tail gas absorption device; the tail gas absorption device is respectively communicated with the oil removal device, the steam stripping device and the evaporative crystallization device; the tail gas absorption device is used for absorbing the tail gas of the oil removal device, the steam stripping device and the evaporative crystallization device.
4. The polyolefin magnesium titanium catalyst production residue processing system according to claim 1, further comprising a titanium dioxide collecting device; the titanium dioxide collecting device is communicated with the first solid-liquid separation device; the titanium dioxide collecting device is used for recovering the titanium dioxide of the first solid-liquid separation device.
5. The polyolefin magnesium titanium-based catalyst production residue treatment system according to claim 1, wherein the first solid-liquid separation device is further communicated with the hydrolysis device to return wash water in the first solid-liquid separation device to the hydrolysis device.
6. The polyolefin magnesium titanium catalyst production residue treatment system according to claim 1, wherein the second solid-liquid separation device is further communicated with the granulated slag heating device to reflux the titanium dioxide in the second solid-liquid separation device to the granulated slag heating device.
7. The polyolefin magnesium titanium based catalyst production residue processing system of claim 1, wherein the magnesium removal device is further communicated with the neutralization device to reflux the mother liquor in the magnesium removal device to the neutralization device.
8. The polyolefin magnesium titanium catalyst production residue treatment system according to claim 1, wherein the first solid-liquid separation device and the second solid-liquid separation device are bundle filters.
9. The polyolefin magnesium titanium system catalyst production residue treatment system according to claim 1, wherein the stripping device and the evaporative crystallization device are integrated into an integrated device; the evaporative crystallization device adopts an MVR device; the evaporative crystallization unit is stripped with steam generated by evaporation.
10. The polyolefin magnesium titanium catalyst production residue treatment system according to claim 3, wherein the tail gas absorption device is an adsorption device, a catalytic oxidation device, a compression condensation device or an incineration device; and/or the organic matter removing device is a biochemical treatment device, a membrane bioreactor MBR, an organic solvent resistant membrane or a rectification device.
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