CN207192838U - A kind of MTO chilled water (chw)s and washing water filtering device - Google Patents

Abstract

The utility model discloses a kind of MTO chilled water (chw)s and washing water filtering device, including for being filtered to remove the by-pass filtration unit of more than 5 μm solid particles of particle diameter and secondary filtration unit for being filtered to remove more than 0.1 μm solid particle of particle diameter, the by-pass filtration unit and secondary filtration unit are connected in series, and the by-pass filtration unit and secondary filtration unit are connected with backflush unit and cleaning unit.The utility model carries out the coarse filtration of by-pass filtration unit and the refined filtration of secondary filtration unit successively to MTO chilled water (chw)s and washing water, realize the classified filtering to solid particle in MTO chilled water (chw)s and washing water, the solid particle of particle diameter >=0.1 μm can effectively be removed, the blocking of by-pass filtration unit and secondary filtration unit inner filter element is reduced, solves the problems, such as that existing filter poor filtration effect and filter efficiency are low.

Description

A kind of MTO chilled water (chw)s and washing water filtering device

Technical field

The utility model belongs to methanol-to-olefins in coal chemical industry (MTO) technical field, and in particular to a kind of MTO chilled water (chw)s with Wash water filtering device.

Background technology

Methanol-to-olefins (MTO) refer to that feed coal vaporizing system prepares low-carbon alkene through catalytic reaction again for methanol, methanol Process.Reaction principle is that methanol is first dehydrated into dimethyl ether in the presence of catalyst, then the balance of dimethyl ether and material benzenemethanol Mixture continues to be dehydrated the low-carbon alkene being transformed into based on ethene, propylene.Conventional MTO reactor assemblies are in reactor Rear end carries out cyclonic separation to remove catalyst granules, and because of the separation limitation of cyclone separator, reactor is after cyclonic separation Also carry the solid catalyst particle that a small amount of grain diameter is less than 10 μm secretly, cause heat exchanger blocking, heat exchange efficiency in running Low problem.

Traditional solid-liquor separation mode is cyclonic separation, but such a separate mode is separated by filtration less efficient, can not remove The solid particle of particle diameter≤5 μm, and actual catalyst particle size is smaller, less than 1 μm of solid particle occupies significant proportion, pole Thin specific grain surface product is big, easily adsorbs grease, and the filter cake that grease is wrapped in solid particle and can cause to be formed in filtering has one Fixed viscosity, common blow-back are extremely difficult to effect.

The filter element that existing MTO devices use is wedge-shaped net filtration element, sintering metal felt filter element, sintering metal Powder filter element or sintered metal mesh filter element, sintering metal felt filter element cost is higher among these, and wedge shape was netted Filtering element, sintered metal mesh filter element filtering accuracy are low, and sintering metal powder filter element is larger to liquid resistance, actual Easily blocked during use.

Utility model content

Technical problem to be solved in the utility model is to be directed to above-mentioned the deficiencies in the prior art, there is provided a kind of MTO Chilled water (chw) and washing water filtering device.The filter carries out the thick of by-pass filtration unit successively to MTO chilled water (chw)s and washing water Filter and the refined filtration of secondary filtration unit, realize the classified filtering to solid particle in MTO chilled water (chw)s and washing water, can effectively remove The solid particle of particle diameter >=0.1 μm, the blocking of by-pass filtration unit and secondary filtration unit inner filter element is reduced, solved existing There is the problem of filter poor filtration effect and low filter efficiency.

In order to solve the above technical problems, the technical solution adopted in the utility model is：A kind of MTO chilled water (chw)s and washing water mistake Filter device, it is characterised in that including for being filtered to remove the by-pass filtration unit of more than 5 μm solid particles of particle diameter and for filtering The secondary filtration unit of more than 0.1 μm solid particle of particle diameter is removed, by-pass filtration unit and secondary filtration the unit series connection connects Connect, the by-pass filtration unit and secondary filtration unit are connected with backflush unit and cleaning unit.

A kind of above-mentioned MTO chilled water (chw)s and washing water filtering device, it is characterised in that the by-pass filtration unit includes more Individual first filter in parallel, the first filter element is provided with the first filter；The secondary filtration unit includes more Individual second filter in parallel, the second filter element, the first filter and the second mistake are provided with second filter Filter bottom offers Residue extraction pipeline, and slag-discharging valve is provided with the Residue extraction pipeline.

A kind of above-mentioned MTO chilled water (chw)s and washing water filtering device, it is characterised in that first filter element is filtering Precision is 5 μm of composition metal antipriming pipe；Second filter element is the composition metal antipriming pipe that filtering accuracy is 0.1 μm.

A kind of above-mentioned MTO chilled water (chw)s and washing water filtering device, the composition metal antipriming pipe are by metallic mesh tube The antipriming pipe formed with the metal dust porous functional layer being attached on metallic mesh tube.

A kind of above-mentioned MTO chilled water (chw)s and washing water filtering device, it is characterised in that the backflush unit includes two simultaneously Join the blowback air inlet pipeline of connection, one of blowback air inlet pipeline is high steam air inlet pipeline, another blowback air inlet pipe Road is mixed gas air inlet pipeline, and venturi mouth and cleaning fluid flow container are provided with the mixed admission pipeline, and the high pressure is steamed The first blowback valve is provided with vapour air inlet pipeline, the second blowback valve is provided with the mixed admission pipeline.

A kind of above-mentioned MTO chilled water (chw)s and washing water filtering device, it is characterised in that stored in the cleaning fluid flow container Cleaning fluid, the cleaning fluid are butanone or acetone.

A kind of above-mentioned MTO chilled water (chw)s and washing water filtering device, it is characterised in that the cleaning unit includes cleaning fluid Storage tank, multiple cleaning fluid water influent pipelines in parallel, multiple cleaning fluid drain pipe roads in parallel, it is provided with cleaning fluid water influent pipeline Wash-out valve, the cleaning fluid water influent pipeline connects with the bottom of first filter or with the bottom of the second filter, described The other end of cleaning fluid water influent pipeline is connected by cleaning pump with cleaning the liquid outlet of liquid storage tank, the cleaning fluid drain pipe road One end connects with the top of first filter or with the top of the second filter, the other end on the cleaning fluid drain pipe road with Clean the liquid outlet connection of liquid storage tank.

A kind of above-mentioned MTO chilled water (chw)s and washing water filtering device, it is characterised in that stored in the cleaning liquid storage tank Cleaning fluid, the cleaning fluid are butanone or acetone.

The utility model has advantages below compared with prior art：

1st, package unit of the present utility model carries out coarse filtration, the two level of by-pass filtration unit to MTO chilled water (chw)s and washing water The refined filtration of filter element, the solid particle of particle diameter >=0.1 μm can be effectively removed, reduce by-pass filtration unit and secondary filtration unit The blocking of inner filter element, solve the problems, such as that existing filter poor filtration effect and filter efficiency are low.

2nd, due in actual MTO chilled water (chw)s and washing water filter process, the particle diameter of catalyst solid particle 1 μm with Under, therefore the specific surface area of solid particle is big, easily adsorbs grease, grease is wrapped in solid particle and can cause to be formed in filtering Filter cake has certain viscosity, and is extremely difficult to effect by ordinary high pressure steam blowback, and therefore, the utility model devises one kind Brand-new backflush unit, wherein backflush unit include two blowback air inlet pipelines being connected in parallel, and one is high steam air inlet Pipeline, one is mixed gas air inlet pipeline.High steam air inlet pipeline can be passed through high pressure into the filter of filter element Steam, mixed gas air inlet pipeline can be passed through the gaseous mixture of high steam and cleaning fluid steam into the filter of filter element Body, when high steam is unable to reach blowback effect, blowback energy is carried out using the mixed gas of high steam and cleaning fluid steam Substantially increase blowback effect.

3rd, backflush unit of the present utility model and cleaning unit alternately, can make the realization of the filter steady in a long-term Operation.

4th, the utility model is porous as filter elements, composition metal using the composition metal antipriming pipe of different filtering accuracies Pipe is made up of metallic mesh tube and the metal dust porous functional layer being attached on metallic mesh tube, takes into account filtering accuracy and filtering Flow, with existing wedge-shaped net filtration element, sintering metal felt filter element, sintering metal powder filter element or sintering metal Silk screen filter element is compared, good filtration effect.

The technical solution of the utility model is described in further detail below by drawings and examples.

Brief description of the drawings

Fig. 1 is structural representation of the present utility model.

Fig. 2 is the utility model first filter and the attachment structure schematic diagram of the second filter.

Description of reference numerals：

1-by-pass filtration unit；1-1-first filter；The filter elements of 1-2-first；

2-secondary filtration unit；The filters of 2-1-second；The filter elements of 2-2-second；

3-1-high steam air inlet pipeline；3-2-mixed gas air inlet pipeline；

3-3-Venturi tube；3-4-cleaning fluid flow container；The blowback valves of 3-5-first；

The blowback valves of 3-6-second；4-1-cleaning liquid storage tank；4-2-cleaning fluid water influent pipeline；

4-3-cleaning fluid drain pipe road；4-4-wash-out valve；4-5-cleaning pump；

5-1-Residue extraction pipeline；5-2-slag-discharging valve.

Embodiment

A kind of MTO chilled water (chw)s as shown in Figure 1 and washing water filtering device, including for being filtered to remove particle diameter more than 5 μm The by-pass filtration unit 1 of solid particle and the secondary filtration unit 2 for being filtered to remove more than 0.1 μm solid particle of particle diameter, institute State by-pass filtration unit 1 and secondary filtration unit 2 be connected in series, the by-pass filtration unit 1 and secondary filtration unit 2 with instead Unit is blown to connect with cleaning unit.

In the present embodiment, by the filtration that filter unit designs are two series connection, wherein by-pass filtration unit 1 was used for MTO chilled water (chw)s and more than 5 μm solid particles of particle diameter in washing water are filtered out, belongs to coarse filtration, secondary filtration unit 2 was used to filter out The MTO chilled water (chw)s gone after by-pass filtration unit 1 filters and more than 0.1 μm solid particle of particle diameter in washing water, belong to refined filtration, Existing MTO chilled water (chw)s in washing water filtering device with only designing a filter element, usually because solid particle is more and relative It is larger in the solid grain size of 0.1 μm of filter element of filtering accuracy, easily block filter element, and blowback and cleaning Frequency is higher, usually influences filter effect efficiency and filter efficiency, and uses the classification coarse filtration and refined filtration of the utility model design Double-filtration unit, solve problem above substantially, improve the effect and filter efficiency of filtering, and be advantageous to blowback list Member and cleaning unit carry out blowback and cleaning to by-pass filtration unit 1 and secondary filtration unit 2 respectively, filter is tieed up Keep steady fixed, good working order.

In the present embodiment, the by-pass filtration unit 1 includes multiple first filter 1-1 in parallel, first filter 1-1 Bottom be provided with inlet, first filter 1-1 top is provided with liquid outlet, first is provided with the first filter 1-1 Filter element 1-2；The secondary filtration unit 2 includes multiple second filter 2-1 in parallel, the second filter 1-1 bottom Inlet is provided with, the second filter 1-1 top is provided with liquid outlet, the second filtering is provided with the second filter 2-1 Element 2-2, the first filter 1-1 and the second filter 2-1 bottoms offer Residue extraction pipeline 5-1, the Residue extraction pipeline 5-1 On be provided with slag-discharging valve 5-2.

The disposal ability of the filter of the present invention is 20-200m³/ h, according to demand by the first filter 1-1 and Second filter 2-1 quantitative design is 1~10, preferably first filter 1-1 and the second filter in the present embodiment 2-1 quantity is 5 (as shown in Figure 1), while first filter 1-1 and the second filter 2-1 slag-drip opening is located at into bottom Portion is that solid particle drops in the presence of deadweight for convenience, therefore periodically opens slag-discharging valve 5-2 and from Residue extraction pipeline 5-1 Discharge solid particle.

In the present embodiment, the first filter element 1-2 is the composition metal antipriming pipe that filtering accuracy is 5 μm；Described Two filter element 2-2 be the composition metal antipriming pipe that filtering accuracy is 0.1 μm, the wherein material selection of composition metal antipriming pipe not Become rusty steel, and porous stainless steel clad metal is by stainless steel wire webmaster and the powder porous functional layer being attached on stainless steel wire webmaster Form.

In the present embodiment, from different filtering accuracy composition metal antipriming pipes as the first filter element 1-2 and the second mistake Filtering element 2-2, it is primarily due to take into account the requirement of filtering accuracy in filtering, and can ensures filtering traffic, solves existing There is the problem of filter element easily blocks.

In the present embodiment, the backflush unit 3 includes two blowback air inlet pipelines being connected in parallel, a blowback air inlet pipe Road is high steam air inlet pipeline 3-1, and another blowback air inlet pipeline is mixed gas air inlet pipeline 3-2；The mixed admission It is provided with pipeline 3-2 on venturi mouth 3-3 and cleaning fluid flow container 3-4, the high steam air inlet pipeline 3-1 and is provided with first The second blowback valve 3-6 is provided with blowback valve 3-5, the mixed admission pipeline 3-1.

In the present embodiment, blowback air inlet pipeline includes high steam air inlet pipeline and mixed gas air inlet pipeline.High pressure Steam inlet pipeline can be passed through high steam into the filter of filter element, and mixed gas air inlet pipeline can be single to filtering The mixed gas of high steam and cleaning fluid steam is passed through in the filter of member, when high steam is unable to reach blowback effect, Blowback effect can be substantially increased by carrying out blowback using the mixed gas of high steam and cleaning fluid steam, be solved in reality MTO chilled water (chw)s easily adsorb grease with catalyst solid particle in washing water filter process, and grease parcel solid particle can be made There is certain viscosity in the filter cake of filter element surface into barrier during filtering, it is difficult to clear up by the blowback of ordinary high pressure steam Problem.

In the present embodiment, the cleaning unit 4 includes cleaning liquid storage tank 4-1, multiple cleaning fluid water influent pipeline 4- in parallel 2nd, wash-out valve 4-4, the cleaning fluid are provided with multiple cleaning fluid drain pipe road 4-3 in parallel, cleaning fluid water influent pipeline 4-2 Water influent pipeline 4-2 connects with first filter 1-1 bottom or with the second filter 2-1 bottom, the cleaning fluid feed liquor The pipeline 4-2 other end is connected by cleaning pump 4-5 with cleaning liquid storage tank 4-1 liquid outlet, the cleaning fluid drain pipe road 4-4 One end connected with first filter 1-1 top or with the second filter 2-1 top, the cleaning fluid drain pipe road 4- 4 other end connects with cleaning liquid storage tank 4-1 liquid outlet.

In the present embodiment, the cleaning unit 4 is designed to a circulation cleaning system, cleaned clear in liquid storage tank 4-1 Washing lotion along cleaning fluid water influent pipeline 4-2, filter element, cleaning fluid drain pipe road 4-3, turns again to cleaning liquid storage tank 4- successively In 1, the effect of wash cycles is realized, while is also provided with wash-out valve 4-4 on cleaning fluid water influent pipeline 4-2, passes through control Wash-out valve 4-4 realizes the effect of soaking and washing, solves in the prior art, and single method cleaning performance is bad, scavenging period The problem of long, and the grease of solid particle is bonded in the utility model using first immersion dissolving, then using wash cycles Mode removes the solid particulate matter for blocking filter element, makes solid particulate matter dispersing and settling and discharges.

In the present embodiment, cleaning fluid, the cleaning are stored in the cleaning fluid flow container 3-5 and cleaning liquid storage tank 4-1 Liquid is butanone or acetone.Wherein the dissolving of butanone or acetone for grease has the function that good, can quickly dissolve and be blocked in The grease of the bonding solid particle of filter element surface, improve blowback efficiency and cleaning efficiency.

As shown in Fig. 2 the course of work of the utility model filter element is：MTO chilled water (chw)s and washing containing solid particle Water enters first filter 1-1 from first filter 1-1 N1 mouths, passes through the first filter element inside first filter 1-1 1-2 carries out coarse filtration, and the solid particle that more than 5 μm of particle diameter is trapped within the first filter element 1-2 outer surface, the MTO after coarse filtration Chilled water (chw) and washing water flow out through the first filter element 1-2 from first filter 1-1 N2 mouths, then are filtered through pipeline from second Device 2-1 N1 mouths enter the second filter 2-1, and the solid catalyst particle that more than 0.1 μm of particle diameter is trapped within second and crosses filtering element Part 2-2 outer surface, chilled water (chw) and washing water after refined filtration pass through N2 mouths of the second filter element 2-2 from the second filter 2-1 Outflow.

As depicted in figs. 1 and 2, the course of work of backflush unit of the present utility model is：From high steam air inlet pipeline 3-1 Blow over come high steam or from mixed gas air inlet pipeline 3-2 blow over come purge gas (high steam, cleaning fluid steam Vapour) first filter 1-1 entered from first filter 1-1 N3 mouths by blowback pipeline, enter from the second filter 2-1 N3 mouths Enter the second filter 2-1, blowback is carried out to the first filter element 1-2 and the second filter element 2-2, make to be attached to the first mistake filtering element Part 1-2 and the solid particle of the second filter element 2-2 outer surfaces all come off, and the solid catalyst particle after coming off is made in gravity First filter 1-1 and the second filter 2-1 hypocone are deposited under, is periodically opened from first filter 1-1 and second The slag-drip opening N4 of filter 2-1 bottoms, solid catalyst particle is discharged by Residue extraction pipeline 5-1.

As depicted in figs. 1 and 2, the course of work of the utility model cleaning unit is：Cleaning fluid is stored up by cleaning pump 4-5 N5 mouth and second mistake of the cleaning fluid (butanone or acetone) by cleaning fluid water influent pipeline 4-2 from first filter 1-1 in tank 4-1 Filter 2-1 N5 mouths are respectively delivered to first filter 1-1 and the second filter 2-1, and cleaning fluid first soaks the first filter element 1-2 and the second filter element 2-2, filtered respectively from first filter 1-1 N6 mouths and second after the lipid solubilization on filter cake Device 2-1 N6 mouths are discharged sends cleaning liquid storage tank back to by cleaning fluid drain pipe road 4-3, finally needs to regularly replace clear liquid liquid storage tank Cleaning fluid in 4-1.

As shown in figure 1, the utility model is used for MTO chilled water (chw)s and the filtering technique of washing water comprises the following steps：

Step 1: MTO chilled water (chw)s and washing water are first passed through into by-pass filtration unit 1 carries out coarse filtration, particle diameter is removed more than 5 μm Solid particle, then refined filtration is carried out by secondary filtration unit 2, removes the solid particle of more than 0.1 μm of particle diameter；

Step 2: when the first filter 1-1 of by-pass filtration unit 1 pressure difference reaches 45kPa, blowback, two level are carried out When second filter 2-1 of filter element 2 pressure difference reaches 0.4MPa, blowback is carried out；The first back-flushing valve is first turned on during blowback Door 3-5, close the second blowback valve 3-6, high steam by high steam air inlet pipeline 3-1 be sent into first filter 1-1 and Second filter 2-1 carries out blowback, if first filter 1-1 pressure differences can not be down to below 10kPa or second after blowback 5min Filter 2-1 can not be down to below 0.1MPa, then close the first blowback valve 3-5, open the second blowback valve 3-6, cleaning fluid Cleaning fluid butanone and acetone vaporization are sent into the by flow container 3-4 cleaning liquid insides in the presence of high steam and Venturi tube 3-3 One filter 1-1 and the second filter 2-1 carries out blowback, and the butanone or acetone for being passed through high steam and vaporization form mixed gas Blowback is carried out, uses high steam and butanone gaseous mixture to carry out blowback in the present embodiment；

Step 3: if first filter 1-1 pressure difference still can not be down to below 10kPa after mixed gas blowback 10min Or second filter 2-1 can not be down to below 0.1MPa, close the first blowback valve 3-5, the second blowback valve 3-6, stop anti- Blow, be then turned on cleaning unit, open wash-out valve 4-4 and cleaning pump 4-5, the cleaning fluid (fourth in liquid storage tank 4-1 will be cleaned Ketone) it is pumped into first filter 1-1 and the second filter 2-1, after soaking 30min, cleaning fluid is carried out by cleaning pump 4-2 10min circulation reaches the mesh for removing the first filter element 1-2 outer surfaces and the second filter element 2-2 outer surfaces attachment grease , first filter 1-1 pressure difference is down to below 10kPa after grease removal, and the second filter 2-1 pressure difference is down to 0.1MPa Hereinafter, then continue to be passed through MTO chilled water (chw)s and washing water filtered, blowback and cleaning, ensure the mistake of MTO chilled water (chw)s and washing water Filter operation steady in a long-term.

It is described above, only it is preferred embodiment of the present utility model, not the utility model is imposed any restrictions.Every Any simple modification, change and equivalence change factually substantially made with new technique to above example, still fall within this In the protection domain of utility model technical scheme.

Claims (8)

1. a kind of MTO chilled water (chw)s and washing water filtering device, it is characterised in that including solid for being filtered to remove more than 5 μm of particle diameter The by-pass filtration unit (1) of body particle and the secondary filtration unit (2) for being filtered to remove more than 0.1 μm solid particle of particle diameter, The by-pass filtration unit (1) and secondary filtration unit (2) are connected in series, the by-pass filtration unit (1) and secondary filtration list First (2) are connected with backflush unit and cleaning unit；The by-pass filtration unit (1) includes multiple first filters in parallel (1-1), the first filter (1-1) is interior to be provided with the first filter element (1-2)；The secondary filtration unit (2) includes more Individual second filter (2-1) in parallel, second filter (2-1) is interior to be provided with the second filter element (2-2).

2. a kind of MTO chilled water (chw)s according to claim 1 and washing water filtering device, it is characterised in that first mistake Filter (1-1) and the second filter (2-1) bottom offer Residue extraction pipeline (5-1), the row of being provided with the Residue extraction pipeline (5-1) Slag valve (5-2).

3. a kind of MTO chilled water (chw)s according to claim 2 and washing water filtering device, it is characterised in that first mistake Filtering element (1-2) is the composition metal antipriming pipe that filtering accuracy is 5 μm；Second filter element (2-2) is for filtering accuracy 0.1 μm of composition metal antipriming pipe.

4. a kind of MTO chilled water (chw)s according to claim 3 and washing water filtering device, it is characterised in that the compound gold Genus polyporus pipe is the antipriming pipe being made up of metallic mesh tube and the metal dust porous functional layer being attached on metallic mesh tube.

5. a kind of MTO chilled water (chw)s according to claim 2 and washing water filtering device, it is characterised in that the blowback list First (3) include two blowback air inlet pipelines being connected in parallel, and one of blowback air inlet pipeline is high steam air inlet pipeline (3- 1), another blowback air inlet pipeline is mixed gas air inlet pipeline (3-2), and text is provided with the mixed admission pipeline (3-2) Mound Li Zui (3-3) and cleaning fluid flow container (3-4), the first blowback valve (3- is provided with the high steam air inlet pipeline (3-1) 5) the second blowback valve (3-6), is provided with the mixed admission pipeline (3-1).

6. a kind of MTO chilled water (chw)s according to claim 5 and washing water filtering device, it is characterised in that the cleaning fluid Cleaning fluid is stored in flow container (3-4), the cleaning fluid is butanone or acetone.

7. a kind of MTO chilled water (chw)s according to claim 2 and washing water filtering device, it is characterised in that the cleaning is single First (4) include cleaning liquid storage tank (4-1), multiple cleaning fluid water influent pipelines (4-2) in parallel, multiple cleaning fluid drain pipes in parallel Road (4-3), wash-out valve (4-4), the cleaning fluid water influent pipeline (4-2) are provided with the cleaning fluid water influent pipeline (4-2) Connected with the bottom of first filter (1-1) or with the bottom of the second filter (2-1), the cleaning fluid water influent pipeline (4- 2) the other end is connected by cleaning pump (4-5) with the liquid outlet of cleaning liquid storage tank (4-1), the cleaning fluid drain pipe road (4- 4) one end connects with the top of first filter (1-1) or with the top of the second filter (2-1), and the cleaning fluid goes out liquid The other end of pipeline (4-4) connects with the liquid outlet of cleaning liquid storage tank (4-1).

8. a kind of MTO chilled water (chw)s according to claim 7 and washing water filtering device, it is characterised in that the cleaning fluid Cleaning fluid is stored in storage tank (4-1), the cleaning fluid is butanone or acetone.