CN1035720C - Filtering and drying apparatus for zirconium molybdyl colloid - Google Patents
Filtering and drying apparatus for zirconium molybdyl colloid Download PDFInfo
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- CN1035720C CN1035720C CN93107798A CN93107798A CN1035720C CN 1035720 C CN1035720 C CN 1035720C CN 93107798 A CN93107798 A CN 93107798A CN 93107798 A CN93107798 A CN 93107798A CN 1035720 C CN1035720 C CN 1035720C
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Abstract
The present invention discloses a pumping filtering and drying apparatus for zirconium-molybdyl colloids, which is characterized in that a pumping filtering apparatus is composed of a pumping filtering tank connected with a mechanical pump, a pumping filtering and drying tank arranged at the top of the pumping filtering tank, and a clear solution suction pipe; a drying apparatus is a drying heater connected with an electrothermal blower fan; a sample rotating apparatus is composed of a colloid discharge pipe connected with a colloid generator, and a positioning hole plate matched with the colloid discharge pipe; simultaneously, a cutter and a plane mirror are arranged at the drying apparatus. After being pumped and filtered in the pumping filtering and drying tank, a colloid is dried. The pumping filtering and drying apparatus has the advantages of high pumping filtering speed, good drying effect and safe and reliable operation, and is suitable for bulk production.
Description
The present invention relates to a kind of isolated plant of producing medical radioisotope, is a kind of filtering and drying apparatus for zirconium molybdyl colloid that is used to prepare gel-type technetium-99m generator specifically.
Molybdic acid zirconium acyl colloid is the raw material of preparation gel-type technetium-99m generator, it be with through the irradiated molybdenum trioxide of nuclear reactor through dissolution of sodium hydroxide, the milky colloid of a kind of large volume that generates is reacted with zirconium oxychloride or nitric acid oxidation zirconium in the salpeter solution and back, and this colloid forms the faint yellow fritter of small size after suction filtration, oven dry.Pour the fritter of this oven dry into physiological saline and just burst into all molybdic acid zirconium acyl particles of irregular of a kind of, shape heavier and size rapidly, this particle branch is installed in a kind of special glass column, make medical gel type technetium-99m generator with leacheate than water.Technetium-99m (
99mTc) be a kind of important medical radioisotope, a kind of radiodiagnosis medicine of Chang Zuowei, it be by its parent molybdenum-99 (
99Mo) decay.Because molybdenum-99 half life period is very short, is 66.02 hours, its daughter technetium-99m half life period is shorter, only 6.02 hours, so require the cycle of preparation gel-type technetium-99m generator, it is short to try one's best comprising molybdic acid zirconium acyl colloid suction filtration, oven dry cycle, to prolong its serviceable life; Overall process because of suction filtration and oven dry belongs to the hot operation again, so it is particularly important to reduce pollution and reduction staff's radiation damage; Simultaneously medicinal because of relating to, so will make product quality meet the pharmacopeia requirement.For this reason, the suction filtration of molybdic acid zirconium acyl colloid and oven dry need be carried out in the isolated plant in being arranged on the hot cell, and as using centrifugal dehydration principle suction filtration, colloid splashes, and loses big, seriously polluted; Dewatering speed begins very fast, becomes very slow soon so that does not reach dehydrating effect, and the colloid after the dehydration is difficult to take out and shift.Can't realize in the hot cell with the oven dry of vacuum drying principle; Use spray drying, the particle of the molybdic acid zirconium acyl of making is very little, does not possess necessary strength, can't guarantee product quality, and seriously polluted, the equipment complexity.Filtering and drying apparatus for zirconium molybdyl colloid commonly used at present as shown in figure 10, it comprises the colloid suction filtration device that is located in the hot cell, colloid is transferred to transfer device in the suction filtration device, and the drying unit that the colloid behind the suction filtration is dried, suction filtration carries out in two steps with oven dry.The suction filtration device comprises bottle,suction 5, the buchner funnel 3 of silk bag 4 is arranged in being installed on the bottle,suction 5, and the bleeding point of bottle,suction 5 is connected with the mechanical pump 12 that is installed in the proparea, hot cell; Sample transfering device comprises and is installed in the commentaries on classics sample device 7 that has the one-way glass piston on the brandreth 6, changes taking out/calm the anger and mouthful being connected with the syringe 10 that is located at the proparea, hot cell of sample device 7, and the inlet that changes sample device 7 lower ends and colloid generation glasss 9 is connected; Drying unit is one to be provided with the baking oven 1 of contact thermometer 2, and contact thermometer 2 is connected with the temperature detect switch (TDS) 11 that is located at the proparea, hot cell.During production, transfer in the silk bag 4 of buchner funnel 3 from the colloid generation cup 9 interior colloids that will generate with changeing sample device 7, start mechanical pump 12 and carry out suction filtration, colloid behind suction filtration is transferred in the porcelain dish 8 together with silk bag 4, carry out the suction filtration second time again, all suction filtration is complete, the silk bag 4 that colloid will be housed is again delivered to one by one in the baking oven 1 in the porcelain dish 8 and is dried, the temperature of baking oven 1 is by contact thermometer 2 and temperature detect switch (TDS) 11 controls, colloid oven dry back is taken out to pour into and is cracked into molybdic acid zirconium acyl particle in the cracking cup 14 that big funnel 13 is housed, send packing, with preparation gel-type technetium-99m generator.High radioactivity waste liquid in the bottle,suction 5 enters display pipeline T through valve K1.Adopt this device major defect be the restriction that is subjected to volume of equipment and operation at every turn can only suction filtration, dry a small amount of colloid, a collection of colloid needs to handle several times just can finish; Suction filtration and oven dry are independently carried out in two devices respectively, so speed is slow; Need to move the generation cup, change sample device and porcelain dish etc. by Robot actions repeatedly in the process of batch suction filtration oven dry colloid, operation easier is big, and poor reliability is sometimes also because of changeing the malfunctioning fault that causes of glass piston in the sample device; Because of can not Direct observation, only judge by rule of thumb whether colloid is drained, and uses the oven for drying weak effect, and this all directly influences the quality of product during suction filtration.In sum, this device is unsuitable for the batch production requirements of molybdic acid zirconium acyl colloid suction filtration, oven dry.
The purpose of this invention is to provide fast, the convenient and reliable operation of a kind of speed of production, the filtering and drying apparatus for zirconium molybdyl colloid that is suitable for producing in batches of good product quality.
The present invention is achieved in that a kind of filtering and drying apparatus for zirconium molybdyl colloid, comprise the colloid suction filtration device that is located in the hot cell, colloid is transferred to sample transfering device in the suction filtration device, the drying unit of colloid oven dry that will be behind suction filtration, said suction filtration device comprises the suction filtration case, be located at rotatable rise that the suction filtration box top matches with it and pour out the suction filtration drying baker of siccative, and negative pressure box and connected clear liquid suction pipe, the bleeding point of suction filtration case and negative pressure box is connected with mechanical pump by the negative pressure baffle-box that is located at the proparea, hot cell, said drying unit comprises drying heater and the connected electric heating fan blower that is located at the proparea, hot cell that is located at the rotatable rise that matches with it on suction filtration drying baker top, be provided with thermopair in the drying heater, it is connected with the controllable silicon temperature controller that is located at the proparea, hot cell, this temperature controller is connected with the electric heating fan blower, said sample transfering device comprises the colloid delivery pipe that is connected with the colloid maker and the location orifice plate supporting with it, in addition, also be provided with cutter and the level crossing that is positioned at the drying heater top in the hot cell, between suction filtration case and the negative pressure baffle-box, between negative pressure baffle-box and the negative pressure box, be respectively equipped with valve between negative pressure box and the clear liquid suction pipe.
Remarkable advantage of the present invention is to abandon laboratory scale molybdic acid zirconium acyl colloid suction filtration and drying unit in the prior art, and employing is suitable for the suction filtration drying unit of the scale of producing in batches, the colloid that generates in batches once can be transferred in the suction filtration drying baker suction filtration together, oven dry on the spot then, needn't secondary transferring, the colloid supernatant that occurs in the suction filtration process can sop up with the clear liquid suction pipe, shortened the suction filtration time, when crackle appears in colloid surface, with cutter colloid is divided into many fritters, the electricity consumption hot-air blower is with the hot-air seasoning colloid again, this not only can accelerate drying rate, and good drying effect, whole process of production need not the repetitive displacement device therefor, and handling safety is reliable.
Now in conjunction with the accompanying drawings and embodiments the present invention is done specific descriptions:
Fig. 1 is a filtering and drying apparatus for zirconium molybdyl colloid structural representation provided by the present invention, and H represents the hot cell among the figure, and F represents the proparea, hot cell;
Fig. 2 is the structural representation of suction filtration case;
Fig. 3 is the vertical view of Fig. 2;
Fig. 4 is the structural representation of suction filtration drying baker;
Fig. 5 is the vertical view of Fig. 4;
Fig. 6 is the structural representation of drying heater;
Fig. 7 is the vertical view of Fig. 6;
Fig. 8 is the structural representation of cutter;
Fig. 9 is the vertical view of Fig. 8;
Figure 10 is a filtering and drying apparatus for zirconium molybdyl colloid structural representation in the prior art.
As shown in Figure 1, a kind of filtering and drying apparatus for zirconium molybdyl colloid comprises the colloid suction filtration device that is located in the hot cell, and colloid is transferred to sample transfering device in the suction filtration device, and with the drying unit of the oven dry of the colloid behind the suction filtration.The suction filtration device comprises suction filtration case 15, be located at the suction filtration drying baker 16 that siccative is poured out in rotatable rise that suction filtration case 15 tops match with it, and negative pressure box 20 and connected clear liquid suction pipe 19, the bleeding point of suction filtration case 15 and negative pressure box 20 is connected with mechanical pump 24 by the negative pressure baffle-box 25 that is located at the proparea, hot cell.Drying unit comprises drying heater 17 and the connected electric heating fan blower 21 that is located at the proparea, hot cell that is located at the rotatable rise that matches with it on suction filtration drying baker 16 tops, thermopair 23 is installed in the drying heater 17, it is connected with the controllable silicon temperature controller 22 that is located at the proparea, hot cell, and pass through the heating voltage that temperature controller 22 is controlled electric heating fan blowers 21, can send into oven dry colloids in the drying heater 17 with the hot blast of substantially constant temperature to guarantee electric heating fan blower 21.Sample transfering device comprises the colloid delivery pipe 29 that is connected with the colloid maker and the location orifice plate 31 supporting with it, in addition, also be provided with cutter 18 in the hot cell, suction filtration case 15 and negative pressure baffle-box 25 are respectively equipped with valve K2, K6 and K4 between negative pressure baffle-box 25 and negative pressure box 20 and negative pressure box 20 and the clear liquid suction pipe 19.For ease of observing, above drying heater 17, pacify a level crossing 26, operating personnel can utilize this level crossing to observe suction filtration and drying effect by the hagioscope in hot cell.
As shown in Figures 2 and 3, the casing of 480 * 350 * 270mm that suction filtration case 15 is made by corrosion resistant plate, be evenly equipped with the aperture of 315 Φ 20 on its upper cover plate 28, the below of upper cover plate 28 is provided with the manger board 32 that center pit is Φ 30 in the casing, wall box top is provided with bleeding point 33, the bottom is provided with leakage fluid dram 34, is connected with display pipeline T by valve K3; As shown in Figure 4 and Figure 5, suction filtration drying baker 16 is the ship shape member by what corrosion resistant plate was made, its bottom periphery is of a size of 480 * 350mm, match with suction filtration case 15 tops, in the middle of the bottom is the concave surface orifice plate 44 of one 463 * 340mm, be evenly equipped with the aperture of 5915 Φ 3 above, be provided with the sieve plate 36 that is of a size of 461 * 338mm above the concave surface orifice plate 44, sieve plate 36 is joined brill with concave surface orifice plate 44, be evenly equipped with 5915 Φ 3 apertures equally, the head of suction filtration drying baker 16 has siccative outlet 45, front and rear is arranged with rotating shaft 35 and stationary shaft 37, traction and fixation axle 37 can drive suction filtration drying baker 16 and rotate rise around its rotating shaft 35, and the colloid that will be dried exports 45 from siccative and pours out.As shown in Figure 6 and Figure 7, drying heater 17 is similarly corrosion resistant plate and makes the casing that is of a size of 470 * 339 * 190mm, its side has air inlet 38 and is connected with the 21 usefulness seals for pipe joints of electric heating fan blower, the wind pushing hole 40 that it is gone to the bottom and has equally distributed 408 Φ 3.5, be provided with equally distributed straight-through up and down exhaust duct 41 at upper and lower the end, exhaust duct 41 diameters are 7mm, totally 77, be provided with rotating shaft 39 in a side relative on the drying heater 17, it can be rotated around this rotating shaft 39 rise with 16 rotating shafts 35 of suction filtration drying baker.As Fig. 8 and shown in Figure 9, cutter 18 comprises support 42 and is installed in can be along the stainless pin 43 of its chute 46 slips in the support 42.Above-mentioned suction filtration case 15, but the quantity of the each suction filtration baking of parts such as suction filtration drying baker 16 and drying heater 17 molybdic acid zirconium acyl colloid at least can be for 50 gel-type technetiums of preparation-99m generator use, and maximum productivity reaches 70/time.Their size depends on designed productive capacity, can change.
When filtering and drying apparatus for zirconium molybdyl colloid provided by the present invention uses, rise drying heater 17, suction filtration drying baker 16 is dropped on the suction filtration case 15, it is gone to the bottom and the sealing all around of suction filtration case 15 upper ends, sieve plate 36 packed into put on the concave surface orifice plate 44 of suction filtration drying baker 16 bottoms in the silk bag that is of moderate size, repave big slightly rectangle filter paper ABCD, colloid delivery pipe 29 is injected in the center pit of location orifice plate 31, location orifice plate 31 is put in the suction filtration drying baker 16, make the outlet of colloid delivery pipe 29 be positioned at the middle part of suction filtration drying baker 16 and this is vertical with the case base, colloid is gone in the suction filtration drying baker 16 from 27 pressures of colloid maker, open mechanical pump 24 and valve K2, valve-off K3 takes out negative pressure to suction filtration case 15, makes the colloid in the suction filtration drying baker 16 realize Separation of Solid and Liquid; Clear liquid suction pipe 19 sling slowly put into heavy clear liquid, open valve K4 and K6, valve-off K5 is drawn onto the heavy clear liquid of colloid surface in the negative pressure box 20, and suction filtration and draw heavy clear liquid and carry out repeatedly repeatedly is till colloid surface no longer clear liquid occurs; When the complete obiteration of colloid surface clear liquid, when beginning crackle to occur, colloid delivery pipe 29 is taken out together with location orifice plate 31, put cutter 18, stainless pin 43 is all around moved in colloid colloid is divided into many fritters, so that accelerate the drying rate of colloid; Take out cutter 18, fall drying heater 17, open controllable silicon temperature controller 22 temperature is transferred to desired location, drive electric heating fan blower 21, dry-heat air is delivered in the suction filtration drying baker 16 by equally distributed wind pushing hole 40 on drying heater 17 base plates colloid is carried out heating, drying, the steam that drying course produces is discharged by exhaust duct 41, close mechanical pump 24 simultaneously, open K3 and K5, waste liquid in suction filtration case 15 and the negative pressure box 20 is entered display pipeline T, in the drying course along with colloid moisture constantly reduces, temperature in the suction filtration drying baker 16 can constantly rise, when being raised to the bake out temperature that surpasses regulation, utilize thermopair 23 and controllable silicon temperature controller 22 can turn down the heating voltage of electric heating fan blower 21 automatically, make the temperature in the suction filtration drying baker 16 remain required constant bake out temperature, whether colloid is dried, can rise drying heater 17, directly observe by level crossing 26; After the colloid oven dry, rise suction filtration drying baker 16, the colloid of oven dry is accurately poured in the cracking cup 30 that is located at suction filtration drying baker 16 exits, make molybdic acid zirconium acyl particle, use for packing.
Claims (2)
1. filtering and drying apparatus for zirconium molybdyl colloid, comprise the colloid suction filtration device that is located in the hot cell, colloid is transferred to sample transfering device in the suction filtration device, and with the drying unit of the colloid behind suction filtration oven dry, it is characterized in that said suction filtration device comprises suction filtration case (15), be located at rotatable rise that suction filtration case (15) top matches with it and pour out the suction filtration drying baker (16) of siccative, and negative pressure box (20) and connected clear liquid suction pipe (19), the bleeding point of suction filtration case (15) and negative pressure box (20) is connected with mechanical pump (24) by the negative pressure baffle-box (25) that is located at the proparea, hot cell, said drying unit comprises drying heater (17) and the connected electric heating fan blower (21) that is located at the proparea, hot cell that is located at the rotatable rise that matches with it on suction filtration drying baker (16) top, be provided with thermopair (23) in the drying heater (17), it is connected with the controllable silicon temperature controller (22) that is located at the proparea, hot cell, this temperature controller (22) is connected with electric heating fan blower (21), said sample transfering device comprises the colloid delivery pipe (29) that is connected with the colloid maker and the location orifice plate (31) supporting with it, in addition, also be provided with cutter (18) in the hot cell and be positioned at the level crossing (26) of drying heater (17) top, between suction filtration case (15) and the negative pressure baffle-box (25), between negative pressure baffle-box (25) and the negative pressure box (20), and be respectively equipped with valve (K2 between negative pressure box (20) and the clear liquid suction pipe (19), K6 and K4).
2. one kind according to the said filtering and drying apparatus for zirconium molybdyl colloid of claim 1, it is characterized in that said suction filtration case (15) is the casing of being made by corrosion resistant plate, its upper cover plate (28) is even orifice plate, upper cover plate (28) below is provided with the manger board (32) with center pit, wall box top is provided with bleeding point (33), the bottom is provided with leakage fluid dram (34), it is connected with display pipeline T by valve (K3), said suction filtration drying baker (16) is to be the ship shape member by what corrosion resistant plate was made, it is gone to the bottom and is concave surface orifice plate (44), be provided with the sieve plate (36) of joining brill with it above the concave surface orifice plate (44), the head of suction filtration drying baker (16) has in material outlet (45), front and rear is respectively equipped with rotating shaft (35) and stationary shaft (37), said drying heater (17) is the casing that corrosion resistant plate is made, its side has air inlet (38), it is gone to the bottom and has equally distributed wind pushing hole (40), on, be provided with equally distributed straight-through up and down exhaust duct (41) between going to the bottom, drying heater (17) is gone up and is provided with rotating shaft (39) in a side relative with suction filtration drying baker (16) rotating shaft (35), and said cutter (18) comprises support (42) and is installed in can be along the stainless pin (43) of its chute (46) slip in the support (42).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93107798A CN1035720C (en) | 1993-07-12 | 1993-07-12 | Filtering and drying apparatus for zirconium molybdyl colloid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93107798A CN1035720C (en) | 1993-07-12 | 1993-07-12 | Filtering and drying apparatus for zirconium molybdyl colloid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1097334A CN1097334A (en) | 1995-01-18 |
| CN1035720C true CN1035720C (en) | 1997-08-27 |
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ID=4986861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN93107798A Expired - Fee Related CN1035720C (en) | 1993-07-12 | 1993-07-12 | Filtering and drying apparatus for zirconium molybdyl colloid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1035720C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11286172B2 (en) | 2017-02-24 | 2022-03-29 | BWXT Isotope Technology Group, Inc. | Metal-molybdate and method for making the same |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4280053A (en) * | 1977-06-10 | 1981-07-21 | Australian Atomic Energy Commission | Technetium-99m generators |
-
1993
- 1993-07-12 CN CN93107798A patent/CN1035720C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4280053A (en) * | 1977-06-10 | 1981-07-21 | Australian Atomic Energy Commission | Technetium-99m generators |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11286172B2 (en) | 2017-02-24 | 2022-03-29 | BWXT Isotope Technology Group, Inc. | Metal-molybdate and method for making the same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1097334A (en) | 1995-01-18 |
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Owner name: CHENGDOU ZHONGHE GAOTONG ISOTOPES CO., LTD. Free format text: FORMER OWNER: CHINESE NUCLEAR POWER DESIGN ACADEMY Effective date: 20040827 |
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Effective date of registration: 20040827 Address after: 610041, B, 28, science and technology development building, three South section of the first ring road, Chengdu, Sichuan Patentee after: Chengdu CNNC Gaotong Isotope Corp. Address before: 291 mailbox 610005, Sichuan City, Chengdu Province Patentee before: Nuclear Power Institute of China |
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Granted publication date: 19970827 Termination date: 20120712 |