CN2650847Y - Back-flushing cleaning filter of noble, poisonous and harmful liquid - Google Patents

Abstract

The utility model relates to a liquid medium filtering device that is used in petrochemical and metallurgical industries, in particular to a back flushing filter device that is applicable to filter valuable, toxic, or harmful liquid. The device is characterized in: a back flushing air input tube is connected to the upper part of the filter through a pipe mounted with an automatic valve, and is connected to the back flushing air inlet below the tube plate in the filter through a pipe mounted with an automatic valve; in addition, an built-in filter separator is mounted in the blow-off pipe on lower part of the filter, a filtering element is mounted in the filter separator, an umbrella cap is provided on the filtering element, the bottom of the filtering element is connected to a thin pipe through threaded connection, the thin pipe extends downwards out of the blow-off pipe, the thin pipe and the blow-off pipe are welded together, and the thin pipe is connected to pre-filtering raw liquid backflow tank through a pipe mounted with an automatic valve; in addition, a catalyst recovery device is added. Compared to the prior art, the utility model has advantages such as reasonable structural design, outstanding effect, economic efficiency, and easy operation.

Description

The blowback cleaning and filtering apparatus of valuable, poisonous and harmful liquid

Affiliated field:

The utility model belongs to the liquid medium filter in the fields such as petrochemical industry, metallurgy, is specially adapted to blowback cleaning and filtering apparatus valuable, poisonous and harmful liquid.

Technical background

Petrochemical industry in the prior art for impurity content height, liquid filtration media that treating capacity is big, adopts that to switch the automatic backwash filtration system continuously be current main development trend.In order to make filter core reach effective regeneration, guarantee that filter core has serviceability steady in a long-term, the filter cake that generally adopts gas assist type back flush mode that cartridge surface is adhered to is in the prior art removed and its soiling solution is disposed to contaminated-oil basin by the soiling solution feed-line; Its flow process (comprises automatically as shown in Figure 1, semi-automatic and manual control), the gas assist type back flush filtration system equipment of prior art is to be linked by two or many (100% filters) filter parallel connections, filter A and filter B bottom are respectively by automatic valve VA3, VB3 and backwash soiling solution feed-line join, automatic valve VA5 is passed through on top in filter A and filter B, VB5 and backwash assist gas pipeline join, pass through VA4, VB4 links to each other with the emission gases pipeline, equally VA2 is being housed, the pipeline of VB2 automatic valve, should join with the decontaminating liquid export pipeline, the raw material liq input pipe is by automatic valve VA1, VB1 joins with filter A and filter B respectively.Two filters of prior art (A and B) are to adopt switching mode to use, and when filter A carries out filter operation, the filter B standby host is stand-by.When filter A operation pressure reduction reaches setting value, provide signal by control device and switch to filter B and carry out filter operation, and filter A using gases is carried out the back flush of gas assist type.The back flush of gas assist type is operating as: filter canister teeming air valve is opened earlier, the backwash assist gas in the injecting gas pipeline.The appended cake layer of filter core is loosening because backwash assist gas compression shock can be exercised earlier, and flushbottom tank valve is opened then, makes backwash assist gas compressing pot liquid (sump oil) and it is all drained into the soiling solution feed-line to advance contaminated-oil basin.Filter A regeneration ending is standby.When filter B reaches setting pressure reduction, also carry out above-mentioned same backwash operation equally, filter A starts working simultaneously.When nontoxic or price was relatively low at filter medium liquid, this back-washing method was widely used, but when filter medium liquid for more valuable solution or when being poisonous and harmful solution, this kind back-washing method just is not suitable for using.Though can reuse or can not reuse but the solid catalyst of needs recovery if contain in the backwash soiling solution, then should consider the backwash soiling solution that enters in the soiling solution pond is separated once more to reclaim solid catalyst, existing filtering technique is considered and imperfection this.

The utility model content

The purpose of this utility model be to provide a kind of reasonable in design, result of use significantly, the blowback cleaning and filtering apparatus of economic and easy to operate valuable, poisonous and harmful liquid.

According to the purpose of this utility model, the solution that we considered is when filter element need clean, employing outside in filter core adds isobaric method simultaneously and guarantees under the adeciduate situation of filter cake, by being provided with embedded isolated by filtration device in the blow-off pipe, make valuable, the harmful poisonous liquid in the filter be back to the preceding stoste backflow storage tank of filter, and under the acting in conjunction of backwash assist gas and displacement cleaning fluid, filter cake is discharged in the backwash soiling solution storage tank, and this soiling solution has been increased the device that reclaims solid catalyst.Specific embodiments of the present utility model is:

The composition of this device is when guaranteeing to produce continuously, employing is no less than the system of two filters, be again by automatic valve VA1 is housed after filter A and the filter B parallel connection, the pipeline of VB1 and material liquid input pipe b join, the blow-off pipe 1 of filter A and filter B bottom is by being equipped with automatic valve VA3, the pipeline of VB3 and backwash soiling solution storage tank f join, filter A and filter B upper lateral part are by being equipped with VA2, the pipeline of VB2 automatic valve and decontaminating liquid efferent duct a join, the top of filter A and filter B is by being equipped with automatic valve VA4, the pipeline of VB4 and emission gases efferent duct c join, backwash assist gas input pipe d is by being equipped with automatic valve VA5, the top of the pipeline of VB5 and filter A and filter B joins, and it is characterized in that backwash assist gas input pipe d is also by being equipped with automatic valve VA8, the pipeline of VB8 and filter A, the import of the backwash assist gas below the tube sheet 6 in the B is joined; In addition at filter A, be provided with embedded isolated by filtration device 7 in the blow-off pipe of B bottom, be provided with a filter core 2 in the isolated by filtration device 7, the top of filter core 2 is equipped with a umbellate form cap 3, a following and tubule 4 of filter core 2 is by being threaded, tubule 4 extends blow-off pipe 1 downwards always, extending tubule 4 is connected by boxing with blow-off pipe 1 intersection, this extends tubule 4 by automatic valve VA6 is housed, the pipeline of VB6 joins with the preceding former liquid storage tank g of filter, and the blow-off pipe 1 of filter A and filter B bottom is by being equipped with automatic valve VA7, the pipeline of VB7 joins with displacement cleaning fluid input pipe e; Wherein import and export one of differential pressure transmitter PDT is installed between the pipeline, one of fluid level transmitter LT is housed respectively, control device LT1 is housed on the fluid level transmitter LT at filter A, B tank body sidepiece at filter A, B.

Filter core 5 in filter A and the filter B can oppositely be placed.

The pipeline that automatic valve VD1, VC1 are housed in addition joins with filtration gatherer C and evaporimeter D sidepiece respectively, the top of evaporimeter D joins by pipeline and the evaporative medium recovery storage tank h that manually-operated gate VD3 is housed, the bottom of evaporimeter D joins by pipeline and the catalyst gatherer i that manually-operated gate VD2 is housed, the bottom of filtering gatherer C is connected with backwash soiling solution storage tank f by the pipeline that manually-operated gate VC2 is housed, and backwash assist gas input pipe d joins with filtration gatherer C sidepiece by the pipeline that manually-operated gate VC3, check-valves VO2 are housed.

Compared with prior art, the utlity model has reasonable in design, result of use significantly, economic and easy to operate advantage.The outstanding advantage of this device is that filter element is need clean the time, employing outside in filter core adds isobaric method simultaneously and guarantees under the adeciduate situation of filter cake, by being provided with embedded isolated by filtration device in the blow-off pipe, make valuable in the filter, harmful poisonous liquid is back to the preceding stoste backflow storage tank of filter, and under the acting in conjunction of backwash assist gas and displacement cleaning fluid, filter cake is discharged in the backwash soiling solution storage tank, and this soiling solution increased the device that reclaims solid catalyst, waste and the poisonous and harmful solution of having avoided valuable solution discharging to cause discharge the pollution that brings, and reduce user's operating cost to greatest extent, solve the problem of the recovery of poisonous and harmful solution inconvenience discharging and solid catalyst.

Description of drawings

Accompanying drawing 1 is the structural representation of gas assist type back flush device in the prior art.

The structural representation when filter core that accompanying drawing 2 poison valuable for the utility model, that have is harmful to the blowback cleaning and filtering apparatus of liquid is the forward placement.

Structural representation when the filter core that accompanying drawing 3 poison valuable for the utility model, that have is harmful to the blowback cleaning and filtering apparatus of liquid is oppositely placement.

Accompanying drawing 4 is the structural representation of the embedded isolated by filtration device in the blow-off pipe of filter bottom.

In above-mentioned accompanying drawing, A, B are filter, and C is for filtering gatherer, the D evaporimeter, arrow is depicted as among the figure: a is the decontaminating liquid efferent duct, and b is the material liquid input pipe, and c is the emission gases efferent duct, d is a backwash assist gas input pipe, e is displacement cleaning fluid input pipe, and f is a backwash soiling solution storage tank, and g is the preceding stoste backflow storage tank of filter, h is that evaporative medium reclaims storage tank, and i is the catalyst gatherer.VA1 wherein, VB1 is a stock media input automatic valve, VA2, VB2 is for purifying back medium output automatic valve, VA3, VB3 is the blowdown output automatic valve of filter, VA4, VB4 is filter emission gases output automatic valve, VA5, VB5, VA8, VB8 is backwash assist gas input automatic valve, VA6, VB6 is the preceding stoste backflow storage tank output of filter automatic valve, VA7, VB7 is displacement cleaning fluid input automatic valve, VD1, VD2, VD3 is respectively and filters join manually-operated gate on the pipeline of gatherer C, VC1, VC2, VC3 is respectively join the manually-operated gate on the pipeline with evaporimeter C, V1 is system's bypass manual control valve, V2 is the manual control valve of stock media intake pipeline b, V3 is the manual control valve of purification medium export pipeline a, and V4 is the manual control valve of backwash assist gas intake pipeline d.VO1, VO2 are the check valve of backwash assist gas intake pipeline d.PDT is a differential pressure transmitter; LT is a fluid level transmitter; LTI is a control device.1 is blow-off pipe, and 2 is filter core, and 3 is umbrella crown, and 4 for extending tubule, and 5 is filter core, and 6 is tube sheet, and 7 is the isolated by filtration device.

The specific embodiment

Among Fig. 2 and Fig. 4, this method is in the device systems of two above filters, and when cleaning wherein any one filter, other filter still works on.With filter A is example, when filter element 5 needs backwash and regeneration, open automatic valve VA5 and the automatic valve VA8 of backwash assist gas input pipe d to the pipeline between filter A, the backwash gas of same operating condition is injected in the outside simultaneously in filter A filter core 5, make filter core 5 in, outer surface bears identical gas pressure, filter core 5 adhering on surface cake layers are interior, be in a kind of poised state under the effect of outer air pressure, to most of filter cake is not split away off, the blow-off pipe 1 of opening filter A bottom is the automatic valve VA6 on the pipeline between stoste backflow storage tank g to the filter, with the pot liquid discharging by the embedded isolated by filtration device in the blow-off pipe 17 stoste backflow storage tank g before the filter.When liquid level sets value under liquid level arrives, close automatic valve VA6, open the automatic valve VA7 of displacement cleaning fluid input pipe e to 1 pipeline of blow-off pipe of filter A bottom, in filtering tank, inject the displacement cleaning fluid by the embedded isolated by filtration device 7 in the blow-off pipe 1, when the liquid level setting value is gone up in liquid level arrival, close displacement cleaning fluid input automatic valve VA7, open the automatic valve VA5 of backwash assist gas input pipe d to the pipeline between filter A, prolong blow-off pipe 1 that certain hour the opens filter A bottom automatic valve VA3 to the pipeline between backwash soiling solution storage tank f, the blow-off pipe 1 of backwash soiling solution in the filter A by filter A bottom is discharged into backwash soiling solution storage tank f or the later separation device reclaims out solid catalyst, filter A regeneration ending standby host is stand-by.

Among Fig. 3, the filter core 5 in filter A and the filter B can oppositely be placed.

Claims (3)

1, valuable, the blowback cleaning and filtering apparatus of poisonous and harmful liquid, the composition of this device is when guaranteeing to produce continuously, employing is no less than the system of two filters, be again by automatic valve (VA1) is housed after filter (A) and filter (B) parallel connection, (VB1) pipeline and material liquid input pipe (b) join, the blow-off pipe (1) of filter (A) and filter (B) bottom is by being equipped with automatic valve (VA3), (VB3) pipeline and backwash soiling solution storage tank (f) join, filter (A) and filter (B) upper lateral part are by being equipped with (VA2), (VB2) pipeline of automatic valve and decontaminating liquid efferent duct (a) join, the top of filter (A) and filter (B) is by being equipped with automatic valve (VA4), (VB4) pipeline and emission gases efferent duct (c) join, backwash assist gas input pipe (d) is by being equipped with automatic valve (VA5), the top of pipeline (VB5) and filter (A) and filter (B) joins, and it is characterized in that backwash assist gas input pipe (d) is also by being equipped with automatic valve (VA8), (VB8) pipeline and filter (A), (B) import of the backwash assist gas below Nei the tube sheet (6) is joined; In addition at filter (A), (B) be provided with embedded isolated by filtration device (7) in the blow-off pipe 1 of bottom, be provided with a filter core (2) in the isolated by filtration device (7), the top of filter core (2) is equipped with a umbellate form cap (3), a following and tubule (4) of filter core (2) is by being threaded, tubule (4) extends blow-off pipe (1) downwards always, extending tubule (4) is connected by boxing with blow-off pipe (1) intersection, this extends tubule (4) by automatic valve (VA6) is housed, (VB6) pipeline joins with the preceding former liquid storage tank (g) of filter, and the blow-off pipe (1) of filter (A) and filter (B) bottom is by being equipped with automatic valve (VA7), (VB7) pipeline joins with displacement cleaning fluid input pipe (e); Wherein import and export between the pipeline one of differential pressure transmitter (PDT) is installed, one of fluid level transmitter (LT) is housed respectively, control device (LT1) is housed on the fluid level transmitter (LT) at filter (A), (B) tank body sidepiece at filter (A), (B).

2, the blowback cleaning and filtering apparatus of valuable, poisonous and harmful liquid according to claim 1 is characterized in that the filter core (5) in filter (A) and the filter (B) can oppositely be placed.

3, the blowback cleaning and filtering apparatus of valuable, poisonous and harmful liquid according to claim 1, it is characterized in that the pipeline that manually-operated gate (VD1), (VC1) are housed joins with filtration gatherer (C) and evaporimeter (D) sidepiece respectively, the top of evaporimeter (D) joins by pipeline and the evaporative medium recovery storage tank (h) that manually-operated gate (VD3) is housed, and the bottom of evaporimeter (D) joins by pipeline and the catalyst gatherer (i) that manually-operated gate (VD2) is housed; The bottom of filtering gatherer (C) is connected with backwash soiling solution storage tank (f) by the pipeline that manually-operated gate (VC2) is housed, and backwash assist gas input pipe (d) joins with filtration gatherer (C) sidepiece by the pipeline that manually-operated gate (VC3), check-valves (VO2) are housed.

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