CN104174210A - Noble metal catalyst filter and noble metal catalyst filtering and recycling method - Google Patents
Noble metal catalyst filter and noble metal catalyst filtering and recycling method Download PDFInfo
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- CN104174210A CN104174210A CN201410459675.2A CN201410459675A CN104174210A CN 104174210 A CN104174210 A CN 104174210A CN 201410459675 A CN201410459675 A CN 201410459675A CN 104174210 A CN104174210 A CN 104174210A
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Abstract
The invention discloses a noble metal catalyst filter and a noble metal catalyst filtering and recycling method. A filter core of the noble metal catalyst filter is a stainless steel metal sintered filter core. The noble metal catalyst filtering and recycling method is implemented by a filter system, the filter system comprises filters, the front ends of the filters are provided with inlet valves and inlet pressure gauges, the upper ends of the filters are provided with outlet pressure gauges and filtering liquid drainage valves, and the lower ends of the filters are provided with catalyst powder discharge valves. By setting the screen diameter of the filters, noble metal powder is intercepted and collected, solvent which can be reused is discharged and can return to the system to be recirculated and reutilized, and therefore, the purpose of saving the solvent can be achieved. According to the filter and the noble metal catalyst filtering and recycling method, the equipment structure principle is simple and the installation is convenient.
Description
Technical field
The present invention relates to a kind of filtered and recycled Apparatus and method for, relate in particular to a kind of filter and filtered and recycled method of noble metal catalyst.
Technical background
Noble metal catalyst is a kind ofly can change chemical reaction velocity and itself not participate in reacting the precious metal material of end product.Nearly all noble metal all can be used as catalyst, but conventional be platinum, palladium, rhodium, silver, ruthenium etc., wherein especially most widely used with platinum, rhodium.Their d electron orbit does not all fill up, and surface is adsorption reaction thing easily, and moderate strength, be beneficial to and form middle " reactive compound ", there is higher catalytic activity, also there is the comprehensive good characteristics such as high temperature resistant, anti-oxidant, corrosion-resistant simultaneously, become most important catalyst material.But the losing issue of noble metal catalyst in the use procedure of noble metal catalyst is to affect the important obstruction that noble metal catalyst is applied.
P-phthalic acid (PTA) and Aromatic Hydrocarbon United Plant (PX) etc. are used the chemical production device of noble metal catalyst as fixed bde catalyst, all face for a long time the noble metal losing issue that noble metal catalyst uses.These equipment are being driven the solvent cycle stage at initial stage, each contain greater catalytic agent noble metal comminuted powder because filling and disturbance produce, along with solvent flows out from reactor filter, be discharged into the places to go such as waste water, cause waste and the loss of larger noble metal and pure water.
Chinese patent CN201310214870.4 discloses a kind of method that reclaims noble metal from dead catalyst.The method adopts sulphur to carry out dissolved under pressure to used catalyst support, and adds TiCl3 solution to prevent the dispersion of noble metal, improves the rate of recovery of noble metal.The process complexity of the method, need to be placed in high temperature, under the conditions such as pressurization, completes, and commercial Application cost compare is high.
Therefore, in the application process of noble metal catalyst, a kind of easy to use, process conditions are simple, efficiently, low cost, organic efficiency high the filtered and recycled method of noble metal catalyst be that in the application of noble metal catalyst is badly in need of the technical problem solving at present.
Summary of the invention
Technical problem to be solved by this invention is the process conditions complexity overcoming in the filtered and recycled method of noble metal catalyst of the prior art, cost is high, the problem that organic efficiency is low, provide a kind of easy to use, process conditions are simple, organic efficiency is high, cheaply the filtered and recycled method of noble metal catalyst.
The present invention is achieved by the following technical solutions.Described technical scheme is as follows:
The filter filtering for noble metal catalyst, filter element is stainless steel metal sintered filter core, and the aperture of filter screen is 0.01um-50mm, and serviceability temperature is 0-500 °, and working pressure is 0.001-50MPa, filtration pressure difference is 0-50MPa.
Preferably, the aperture of filter screen of filter is 10um-500um.
Preferably, the serviceability temperature of filter is 1-150 °.
Preferably, the working pressure of filter is 0.5-5MPa.
Preferably, the filtration pressure difference of filter is 0.05-0.5MPa.
A kind of filtered and recycled method of noble metal catalyst, complete by filter system, filter system is completed by filter, the front end of filter is provided with and enters valve and inlet pressure table, the upper end of filter is provided with delivery gauge and filtrate discharge valve, the lower end of filter is provided with catalyst fines dump valve, and filter is above-mentioned arbitrary filter, and described method is carried out according to following steps:
The first, first slowly open the valve that enters of filter front end, then slowly open the filtrate discharge valve of filter upper end, liquid containing noble metal powder is introduced to above-mentioned filter, in the time that the pressure differential on inlet pressure table and the delivery gauge of filter reaches 0.05-0.5MPa, first by filter front end enter valve slowly closing, then by the filtrate discharge valve slowly closing of filter upper end;
The second, slowly open the catalyst fines dump valve of filter lower end, open top intake valve, oppositely enter from discharge nozzle, the noble metal powder adhering on loosening filter core, open top water intaking valve, loosening catalyst fines is rinsed to get off to collect in collecting bag, leave standstill 0.5-20 hour, discharge visible free water.
Preferably, collecting bag is that space is the permeable collecting bag of 10-100um.
Preferably, filter system is located at the down-stream system of fixed bed metallic catalyst.
Preferably, filter system is located between the hydrogenation reaction system and the first crystallizer system in fixed bed metallic catalyst down-stream system.
Preferably, number of filters is 1-10000, and preferred number is 1-10.
Method of the present invention is in noble metal catalyst removal process, noble metal catalyst is attached on active carbon or similar substrates, along with Flow of Goods and Materials and the mutual disturbance friction of catalyst granules, cause noble metal from carrier surface with the fine powder form loss that comes off, be particularly useful for p-phthalic acid (PTA) device and Aromatic Hydrocarbon United Plant with catalytic hydrogenation reaction device.
Beneficial effect of the present invention is:
The first, noble metal catalyst provided by the present invention reclaims in the method for filtering and passes through filter, especially the setting in filter webs footpath, holds back collection noble metal powder, and the solvent that can re-use is discharged, can retrieval system recycling, reach the object of saving solvent.
The second, the filter that noble metal catalyst provided by the present invention reclaims and the Processes and apparatus structural principle of recovery method are simple, easy for installation.
Three, filter provided by the present invention is collected the noble metal running off by interception, the noble metal catalyst of prior art does not in use design filter interception and reclaims, and causes solvent (as pure water) waste and Heavy metals and pollution by entering waste water system containing the rinse solution of noble metal.
Brief description of the drawings
Below in conjunction with the drawings and specific embodiments, the present invention is described in further details.
Fig. 1 is the flow chart of the filtered and recycled method of noble metal catalyst of the present invention.Wherein 1 to be A filter enter valve, 2 is the inlet pressure table of A filter, and 3 is A filter, and 4 is the delivery gauge of A filter, 5 is the filtrate discharge valve of A filter, 6 is the filtrate discharge valve of B reserve filter, and 7 is the delivery gauge of B reserve filter, and 8 is B reserve filter, 9 is the catalyst fines dump valve of B reserve filter, 10 is the inlet pressure table of B reserve filter, and 11 is B reserve filter enters valve, and 12 is the catalyst fines dump valve of A filter.13 is the loosening gas pipeline of filter (A), and source of the gas can be the gas such as compressed air or nitrogen, comprises that every filter of B platform is equipped with.14 is fresh water (pure water) pipeline of the flushing catalyst fines discharge of filter (A), comprises that every filter of B platform is equipped with.
Detailed description of the invention
Further describe flesh and blood of the present invention below in conjunction with embodiments of the invention, but following embodiment does not make any restriction to the present invention.
Embodiment 1
Employing precious metal palladium is catalyst, and adhering to carrier is active carbon, and 35 tons of fresh palladium carbon catalysts (containing metal palladium 0.5%) are reclaimed to filtration with filter system provided by the present invention.
Filter system is made up of A filter 3 and B reserve filter 8, the front end of A filter is provided with and enters valve 1 and inlet pressure table 2, the upper end of A filter is provided with delivery gauge 4 and filtrate discharge valve 6, the lower end of A filter is provided with catalyst fines dump valve 5, the front end of B reserve filter is provided with and enters valve 11 and inlet pressure table 10, the upper end of B reserve filter is provided with delivery gauge 7 and filtrate discharge valve 6, the lower end of B reserve filter is provided with catalyst fines dump valve 9, the material of the filter of A filter 3 and B reserve filter 8 is SS304 metal agglomeration filter core, the aperture of filter is 50um.
That first slowly opens A filter front end enters valve 1, then slowly open the discharge valve 5 of A filter upper end, when the pressure differential of catalyst fines dump valve 5 reaches 0.1MPaG, the permeable collecting bag that is 50um by hole is ready to, slowly open the catalyst fines dump valve 12 of A filter, open loosening gas pipeline 13 valves from inside to outside back flushing filter core after 20 seconds, close, opening flushing water pipeline 14 valves, moisture catalyst fines is collected in collecting bag, the catalyst fines that part is attached on filter can pass through the downward flush filter of crack filtrate discharge valve 5, or the showering guilding valve place arranging by exit, A filter upper end introduces the downward flush filter of pure water, making to remain noble metal catalyst powder comes off and discharges from catalyst fines dump valve 12, enter in collecting bag and collect, simultaneously, the discharge of can seeping water in collecting bag of partial solvent water, leave standstill after certain hour, obtain moisture less noble metal catalyst powder.
For ensure to rinse continuously and shorten that the hydrogenation reactor solvent washing beds time now can open B reserve filter front end enter valve 11 and filtrate discharge valve 6, liquid containing noble metal powder is introduced to B filter 8 for subsequent use, leach clean filtrate and discharge and return to process system recovery use from filtrate discharge valve 6, all the other programs are with above-mentioned A filter 3.
Filter through the recovery of 24 hours, reclaiming palladium carbon powder is 650 kilograms, palladium content 0.95%, and reclaiming Metal Palladium is 6.175 kilograms, calculates with 99% rate of recovery, can be used for manufacturing 1.223 tons of fresh palladium carbon catalysts, the pure water of recovery is 3600 tons.
Claims (10)
1. the filter filtering for noble metal catalyst, it is characterized in that: described filter element is stainless steel metal sintered filter core, the aperture of filter screen is 0.01um-50mm, and serviceability temperature is 0-500 °, working pressure is 0.001-50MPa, and filtration pressure difference is 0-50MPa.
2. filter according to claim 1, is characterized in that: the preferably aperture of filter screen of described filter is 0.5um-100um.Filter element filtered version is, in entering outward, go out and in enter to go out.In entering outside being preferably, go out.
3. filter according to claim 1, is characterized in that: the better serviceability temperature of described filter is 10-150 °.
4. filter according to claim 1, is characterized in that: the better working pressure of described filter is 0.5-5.0MPa.
5. filter according to claim 1, is characterized in that: on the better filtration pressure difference of described filter, be limited to 0.05-1.0MPa.
6. the filtered and recycled method of a noble metal catalyst, it is characterized in that: described method completes by filter system, above-mentioned filter system is completed by filter, the front end of filter is provided with and enters valve and inlet pressure table, the upper end of filter is provided with delivery gauge and filtrate discharge valve, the lower end of filter is provided with catalyst fines dump valve, and above-mentioned filter is the arbitrary filter described in claim 1-5, and described method is carried out according to following steps:
The first, first slowly open the valve that enters of above-mentioned filter front end, then slowly open the filtrate discharge valve of above-mentioned filter upper end, liquid containing noble metal powder is introduced to above-mentioned filter, in the time that the pressure differential on inlet pressure table and the delivery gauge of above-mentioned filter reaches 0.05-0.5MPa, first by above-mentioned filter front end enter valve slowly closing, then by the filtrate discharge valve slowly closing of above-mentioned filter upper end;
The second, slowly open the catalyst fines dump valve of above-mentioned filter lower end, open top admission line valve, oppositely enter from discharge nozzle, the noble metal powder adhering on loosening filter core, open top back with water inlet line valve, loosening catalyst fines is rinsed to get off to collect in collecting bag, leave standstill 0.5-20 hour, discharge visible free water.
7. method according to claim 5, is characterized in that: described collecting bag is that hole is the permeable collecting bag of 0.1-2000um, and better hole is 10-100um.
8. method according to claim 5, is characterized in that: described filter system is located at the down-stream system of fixed bed metallic catalyst.
9. method according to claim 8, is characterized in that: better position is that described filter system is located between the hydrogenation reaction system and the first crystallizer system in fixed bed metallic catalyst down-stream system.
10. method according to claim 6, is characterized in that: described number of filters is 1-10000, and preferred number is 1-10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410459675.2A CN104174210A (en) | 2014-09-10 | 2014-09-10 | Noble metal catalyst filter and noble metal catalyst filtering and recycling method |
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| CN201410459675.2A CN104174210A (en) | 2014-09-10 | 2014-09-10 | Noble metal catalyst filter and noble metal catalyst filtering and recycling method |
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| CN104174210A true CN104174210A (en) | 2014-12-03 |
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| CN201410459675.2A Pending CN104174210A (en) | 2014-09-10 | 2014-09-10 | Noble metal catalyst filter and noble metal catalyst filtering and recycling method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106732198A (en) * | 2016-12-29 | 2017-05-31 | 杭州油脂化工有限公司 | A kind of oil hydrogenation catalyst recycle device and recoverying and utilizing method |
| CN113262724A (en) * | 2021-05-13 | 2021-08-17 | 宁夏胜蓝化工环保科技有限公司 | Reactor for direct synthesis of methyl silicate |
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| US6652760B2 (en) * | 2001-03-12 | 2003-11-25 | Texaco Inc. | Internal filter for fischer-tropsch catalyst/wax separation |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106732198A (en) * | 2016-12-29 | 2017-05-31 | 杭州油脂化工有限公司 | A kind of oil hydrogenation catalyst recycle device and recoverying and utilizing method |
| CN113262724A (en) * | 2021-05-13 | 2021-08-17 | 宁夏胜蓝化工环保科技有限公司 | Reactor for direct synthesis of methyl silicate |
| CN113262724B (en) * | 2021-05-13 | 2022-08-26 | 宁夏胜蓝化工环保科技有限公司 | Reactor for direct synthesis of methyl silicate |
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