CN210874670U

CN210874670U - Filter device with self-flushing and dirt-removing functions

Info

Publication number: CN210874670U
Application number: CN201921635415.0U
Authority: CN
Inventors: 葛建飞; 徐志雄; 童绍丰; 赵恒军
Original assignee: Jiangsu Sanmei Chemicals Co ltd
Current assignee: Jiangsu Sanmei Chemicals Co ltd
Priority date: 2019-09-27
Filing date: 2019-09-27
Publication date: 2020-06-30
Anticipated expiration: 2029-09-27

Abstract

The utility model discloses a filter equipment with self-cleaning function, including DCS system, first pressure transmitter, second pressure transmitter, first cut-off valve, second trip valve, third trip valve, fourth trip valve, filter, the entry end of filter is provided with first pressure transmitter, first cut-off valve and fourth trip valve, the entry end of filter connect behind the first cut-off valve with first pressure transmitter, the entry end of filter and fourth trip valve are connected, the exit end of filter is provided with second pressure transmitter, third trip valve, the exit end of filter connect behind the second trip valve with second pressure transmitter, the entry end of filter and third trip valve are connected, the DCS system receives the signal from first pressure transmitter with the second pressure transmitter, and controlling the opening and closing of the first cut-off valve, the second cut-off valve, the third cut-off valve and the fourth cut-off valve.

Description

Filter device with self-flushing and dirt-removing functions

Technical Field

The utility model relates to a filter equipment with from washing function of decontaminating.

Background

In the pickling section, because sulfur, dust impurities and the like washed by the reaction gas appear at the lower part of the tower kettle in the long-time pickling cycle process, the lower part is easy to deposit and form acid mud (the mixed acid cycle liquid is formed by mixing 105% sulfuric acid and 98% sulfuric acid according to a certain proportion), the subsequent washing effect on the impurities carried by the reaction gas is greatly reduced in the long-time pickling operation process, and the quality of the next reaction gas purification is influenced to a certain extent. Regular overhaul or poor washing effect, so the main equipment is shut down, and then the pickling tower is cleaned, the time consumption period is long, adverse factors of environmental protection and safe operation are more, and the production efficiency is influenced to a certain extent. In order to solve the disadvantages, the original pickling circulation pipeline is improved, and a filtering device and a self-flushing system thereof are added for overall upgrading and promotion.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is that reaction equipment clears away the scale deposit after the acid cleaning in the mixed acid scrubbing tower under the circumstances of not stopping, extension production cycle and improvement washing efficiency further improve the quality of reaction gas.

The purpose of the utility model is realized like this:

the utility model provides a filter equipment with from washing function of decontaminating, includes DCS system, first pressure transmitter, second pressure transmitter, first shut-off valve, second shut-off valve, third shut-off valve, fourth shut-off valve, filter the entry end of filter is provided with first pressure transmitter, first shut-off valve and fourth shut-off valve, after the entry end of filter is connected first shut-off valve with first pressure transmitter, the entry end and the fourth shut-off valve of filter are connected the exit end of filter is provided with second pressure transmitter, third shut-off valve, after the exit end of filter is connected the second shut-off valve with second pressure transmitter, the exit end and the third shut-off valve of filter are connected, the DCS system receives and comes from first pressure transmitter with second pressure transmitter's signal, controls first shut-off valve, And the second stop valve, the third stop valve and the fourth stop valve are opened and closed.

Preferably, the filter equipment still includes mass flowmeter, after the mass flowmeter connects the second pressure transmitter, with the second trip valve is connected, the DCS system receives the signal that comes from mass flowmeter.

Further, filter equipment still includes mixed acid scrubbing tower, pickling circulating pump, the sub-unit connection of mixed acid scrubbing tower behind the pickling circulating pump, be connected with first pressure transmitter and third trip valve, mass flow meter is connected to the upper portion of mixed acid scrubbing tower.

Preferably, the filter device further comprises a first sight cup, a sixth stop valve, a first PH meter and a second sight cup, wherein the fourth stop valve is connected with the back of the first sight cup and the sixth stop valve, then connected with the first PH meter and then connected with the second sight cup.

Preferably, the filtering device further comprises a circulating flushing system, the circulating flushing system comprises a flushing mother liquor preparation tank and a flushing liquid pneumatic diaphragm pump, the flushing mother liquor preparation tank is connected with the flushing liquid pneumatic diaphragm pump and then connected with the outlet end of the filter, and the inlet end of the filter is connected with the flushing mother liquor preparation tank.

Further, circulation rinse-system still includes check valve, second sight cup, fifth trip valve, damping device, the pneumatic diaphragm pump of washing liquid is connected behind the check valve, is connected to the exit end of filter, the entry end of filter with the fourth trip valve is connected the back, with the fifth trip valve is connected, then with damping device connects, then reconnects to wash mother liquor preparation groove.

Furthermore, the circulating flushing system also comprises a safety valve and a third pressure transmitter, the flushing fluid pneumatic diaphragm pump is connected with the safety valve, then is connected with the third pressure transmitter and then is connected with the flushing mother liquor preparation tank, and the DCS system receives signals from the third pressure transmitter.

Further, the pneumatic diaphragm pump for washing liquid is a positive displacement pump.

Further, the washing mother solution preparation tank is connected with a second PH meter.

Further, the first safety valve is a C.S.O spring type safety valve.

The utility model discloses there is following beneficial effect:

1. under the condition that the main equipment mixed acid washing tower does not stop, the scale substances of the mixed acid washing tower are cleaned, the washing efficiency is improved, the quality of reaction gas is further improved, the previous cleaning time is shortened, and the production efficiency is improved;

2. the positive displacement pump is used as a washing circulating pump, in the washing process, fluid pulses (pulses with certain physical washing action) generated by the positive displacement pump are used for washing alternating loads generated by washing liquid fluid on the scaling substances on the filter, and in combination with a washing liquid preparation tank (different washing liquids or chemical washing liquids can be prepared according to the components of the scaling substances), physical washing or chemical washing is effectively combined, so that the scaling substances adhered to the filtering device are removed, and the filtering effect when the filtering device is switched and put into use again is ensured;

3. the pneumatic diaphragm pump of the flushing fluid is a pneumatic diaphragm pump (or an explosion-proof electric diaphragm pump) and the flushing mother solution preparation tank which can be flexibly prepared can be used for various production occasions of various scaling substances;

4. the safety risk that operators are injured during manual cleaning operation is reduced;

5. the production site is clean, the pollution of the working site is avoided, and the requirement on the aspect of environmental protection is met.

Drawings

FIG. 1 is a schematic structural view of a filtering apparatus with a self-flushing cleaning function;

the device comprises a pressure sensor, a first pressure transmitter, a second pressure transmitter, a first cut-off valve, a filter, a second cut-off valve, a mass flow meter, a DCS system, a check valve, a 9 safety valve, a 10 pressure transmitter, a flushing fluid pneumatic diaphragm pump, a third cut-off valve, a 13 pH meter, a 14 cut-off valve, a fourth cut-off valve, a 15 pressure meter, a 16 first sight cup, a 17 second sight cup, an 18 acid cleaning circulating pump, a 19 pressure meter, a 20 pH meter, a second pH meter, a 21 flushing mother liquor.

Detailed Description

The present invention will be further described with reference to the following specific embodiments, but the present invention is not limited to these specific embodiments. It will be recognized by those skilled in the art that the present invention encompasses all alternatives, modifications, and equivalents as may be included within the scope of the claims.

In the utility model, if not, the adopted raw materials and equipment can be purchased from the market or commonly used in the field. The methods in the following examples are conventional in the art unless otherwise specified.

In the present disclosure, the terms "first", "second", "third", "fourth", "fifth", and "sixth", etc. are used only for distinguishing descriptions, and are not to be construed as indicating or implying relative importance.

A filter device with self-flushing dirt-removing function comprises a DCS system 7, a first pressure transmitter 1, a second pressure transmitter 6, a first cut-off valve 2, a second cut-off valve 4, a third cut-off valve 12, a fourth cut-off valve 14 and a filter 3, wherein the inlet end of the filter 3 is provided with the first pressure transmitter 1, the first cut-off valve 2 and the fourth cut-off valve 14, the inlet end of the filter 3 is connected with the first cut-off valve 2 and then with the first pressure transmitter 1, the inlet end of the filter 3 is connected with the fourth cut-off valve 14, the outlet end of the filter 3 is provided with the second pressure transmitter 6 and the third cut-off valve 12, the outlet end of the filter 3 is connected with the second cut-off valve 4 and then with the second pressure transmitter 6, the outlet end of the filter 3 is connected with the third cut-off valve 12, the DCS system 7 receives signals from the first pressure transmitter 1 and the second pressure transmitter 6, and controlling the opening and closing of the first cut-off valve 2, the second cut-off valve 4, the third cut-off valve 12 and the fourth cut-off valve 14.

Preferably, the filtering device further comprises a mass flow meter 5, the mass flow meter 5 is connected with the second pressure transmitter 6 and then connected with the second cut-off valve 4, and the DCS system 7 receives signals from the mass flow meter 5.

Further, filter equipment still includes mixed acid scrubbing tower 22, pickling circulating pump 18, the bottom of mixed acid scrubbing tower 22 is connected behind pickling circulating pump 18, is connected with first pressure transmitter 1 and third trip valve 12, the top of mixed acid scrubbing tower 22 is connected to mass flow meter 5.

Preferably, the filtering device further comprises a first sight cup 16, a sixth stop valve 24, a first pH meter 13 and a second sight cup 17, wherein the fourth stop valve 14 is connected with the first sight cup 16, the sixth stop valve 24, the first pH meter 13 and the second sight cup 17 after being connected with the first sight cup 16.

Preferably, the filtering device further comprises a circulating flushing system, the circulating flushing system comprises a flushing mother liquor preparation tank 21 and a flushing liquor pneumatic diaphragm pump 11, the flushing mother liquor preparation tank 21 is connected with the outlet end of the filter 3 after being connected with the flushing liquor pneumatic diaphragm pump 11, and the inlet end of the filter 3 is connected with the flushing mother liquor preparation tank 21.

Further, the circulation flushing system also comprises a check valve 8, a second sight cup 17, a fifth stop valve 25 and a damping device 23, wherein the pneumatic diaphragm pump 11 for flushing liquid is connected with the back of the check valve 8 and the outlet end of the filter 3, the inlet end of the filter 3 is connected with the fourth stop valve 14 and the fifth stop valve 25, then is connected with the damping device 23 and then is connected with the flushing mother liquid preparation tank 21.

Further, the circulating flushing system further comprises a first safety valve 9 and a third pressure transmitter 10, the flushing liquid pneumatic diaphragm pump 11 is connected with the first safety valve 9, then is connected with the third pressure transmitter 10, and then is connected with the flushing mother liquid preparation tank 21, and the DCS system 7 receives signals from the third pressure transmitter 10.

Further, the pneumatic diaphragm pump 11 for washing liquid is a positive displacement pump.

Further, the washing mother liquor preparation tank 21 is connected to a second PH meter 20.

Further, the first relief valve 9 is a c.s.o.relief valve.

When the acid washing and filtering are normally operated for the first time, the acid washing liquid passes through the lower part of the mixed acid washing tower 22, passes through the acid washing circulating pump 18 to the first cut-off valve 2, the filter 3 and the second cut-off valve 4, and is sent to the upper part of the mixed acid washing tower 22 to wash the reaction gas. At this time, the third cut valve 12 and the fourth cut valve 14 on the rinse circulation line are normally closed, and the first cut valve 2 and the second cut valve 4 on the pickling circulation line are opened.

After washing for a period of time, the filter filters sulfur and dust impurities in the reaction gas, a pressure difference is formed before and after the filter, the first pressure transmitter 1 and the second pressure transmitter 6 transmit pressure signals to the DCS system, the differential pressure value is thus transmitted to the DCS system 7, and the mass flow meter 5 on the pickling cycle line transmits a mass flow signal to the DCS system 7, when the set value is not reached, the DCS system 7 sends out an instruction to close the first cut-off valve 2 and the second cut-off valve 4 which are connected with the front and the back of the filter, the third cut-off valve 12 and the fourth cut-off valve 14 are opened at the same time, the bypass pickling line is smooth, the flow of the pickling solution is not influenced, and the circulation flushing route is smooth, and a sixth stop valve 24 and a fifth stop valve 25 of the ball valve are opened from an outlet pipeline of the flushing liquid pneumatic diaphragm pump 11, through the filter 3 and to a post-treatment pipeline. The fifth trip valve 25 is closed manually earlier because of impurity is more during preliminary washing, prevent the initial stage flush fluid circulation to washing mother liquor preparation groove 21, the condition is washed to the first sight cup 16 observation filter of accessible during the initial stage is washed, when the numerical value that first PH meter 13 on the aftertreatment pipeline shows is close the numerical value that second PH meter 20 on the mother liquor preparation groove shows, close sixth trip valve 24 and open fifth trip valve 25 and make its washing mother liquor reduce the waste of washing mother liquor from the circulation, the circulation rinse-system of self-forming closed.

At the in-process that washes filter 3, the outlet line of the pneumatic diaphragm pump of flushing fluid 11 does not set up damping device, and the technology fluid of prior art needs steady transport, to this, the utility model discloses an in-process application reverse thinking that the device, filter washed lets on purpose that the pneumatic diaphragm pump of flushing fluid 11 produces fluid pulse for the export pipeline section of positive displacement pump, and the fluid produces alternating load to filter 3 through. The filtering and impurity-removing effect of the cleaning filter 3 can be improved.

Further, because the positive displacement pump is used in the filter flushing system, and the centrifugal type is used in the traditional circulating flushing pump, the safety of the positive displacement pump needs to be considered, and the situation that when the fouling substances of the filter device are not flushed and discharged in time, the blockage from the outlet of the flushing fluid pneumatic diaphragm pump 11 to the filtering device section is serious can occur in order to avoid the damage of the diaphragm caused by the pressure building of the outlet of the positive displacement pump. Therefore, a first safety valve 9 is arranged at the outlet of the flushing liquid pneumatic diaphragm pump 11, when the front pipeline is blocked to cause the pressure of the positive displacement pump to be suppressed, in order to protect the flushing circulation pneumatic diaphragm pump, the first safety valve 9 can timely jump to release pressure fluid to a flushing mother liquid preparation tank, and further, the first safety valve 9 is a C.S.O spring type safety valve; meanwhile, the third pressure transmitter 10 arranged on the discharge pipe of the first safety valve 9 can transmit signals to the DCS system, so that an alarm can be given, control room operators are reminded, the filter device washes the blockage caused seriously, the filter element needs to be replaced, and the filter washing system can be put into operation again.

The utility model can also be used for the internal circulation water header pipe of the system equipment to regularly clean out the impurities of the scale forming substances of the circulation fluid, indirectly reduce the cleaning period of the scale forming substances of the circulation water tank, simultaneously reduce the scale forming possibility of the shell pass of the heat exchanger, improve the efficiency of the heat exchange production device, prolong the service life of the heat exchanger and ensure the reliable and stable operation of the production;

the utility model can also be used for the treatment of the scaling of the tube bundle of A, B heat exchange equipment in the equipment grading management; class a is an important device; the class B is main equipment, reduces manual labor, and greatly shortens maintenance and cleaning time.

Claims

1. The filtering device with the self-flushing and dirt-removing functions is characterized by comprising a DCS (distributed control system) system (7), a first pressure transmitter (1), a second pressure transmitter (6), a first cut-off valve (2), a second cut-off valve (4), a third cut-off valve (12), a fourth cut-off valve (14) and a filter (3), wherein the inlet end of the filter (3) is provided with the first pressure transmitter (1), the first cut-off valve (2) and the fourth cut-off valve (14), the inlet end of the filter (3) is connected with the first pressure transmitter (1) after being connected with the first cut-off valve (2), the inlet end of the filter (3) is connected with the fourth cut-off valve (14), the outlet end of the filter (3) is provided with the second pressure transmitter (6) and the third cut-off valve (12), the outlet end of the filter (3) is connected with the second cut-off valve (4) and the second pressure transmitter (6), the exit end and the third trip valve (12) of filter (3) are connected, DCS system (7) receive come from first pressure transmitter (1) with the signal of second pressure transmitter (6), control first trip valve (2), second trip valve (4), opening and closing of third trip valve (12) with fourth trip valve (14).

2. The filtering device according to claim 1, characterized in that it further comprises a mass flow meter (5), said mass flow meter (5) being connected to said second pressure transmitter (6) and to said second shut-off valve (4), said DCS system (7) receiving signals from said mass flow meter (5).

3. The filtering device according to claim 2, further comprising a mixed acid washing tower (22) and a pickling circulation pump (18), wherein the lower part of the mixed acid washing tower (22) is connected with the pickling circulation pump (18) and then connected with the first pressure transmitter (1) and the third cut-off valve (12), and the mass flow meter (5) is connected to the upper part of the mixed acid washing tower (22).

4. The filtering device according to claim 1, characterized in that it further comprises a first sight cup (16), a sixth cut-off valve (24), a first PH meter (13) and a second sight cup (17), said fourth cut-off valve (14) being connected to said first sight cup (16) and then to said sixth cut-off valve (24), then to said first PH meter (13) and then to said second sight cup (17).

5. The filtration device according to claim 1, further comprising a circulating flushing system, wherein the circulating flushing system comprises a flushing mother liquor preparation tank (21) and a flushing liquor pneumatic diaphragm pump (11), the flushing mother liquor preparation tank (21) is connected with the outlet end of the filter (3) after being connected with the flushing liquor pneumatic diaphragm pump (11), and the inlet end of the filter (3) is connected with the flushing mother liquor preparation tank (21).

6. The filtering device according to claim 5, characterized in that the circulating flushing system further comprises a check valve (8), a second sight cup (17), a fifth shut-off valve (25), a damping device (23), the flushing fluid pneumatic diaphragm pump (11) being connected to the outlet end of the filter (3) after being connected to the check valve (8), the inlet end of the filter (3) being connected to the fifth shut-off valve (25) after being connected to the fourth shut-off valve (14), then being connected to the damping device (23), then being connected to the flushing mother liquor preparation tank (21).

7. The filtering device according to claim 5, characterized in that the circulating flushing system further comprises a first safety valve (9) and a third pressure transmitter (10), the flushing liquid pneumatic diaphragm pump (11) is connected with the first safety valve (9), then connected with the third pressure transmitter (10) and further connected with the flushing mother liquor preparation tank (21), and the DCS system (7) receives a signal from the third pressure transmitter (10).

8. A filter device according to claim 5, characterized in that the pneumatic membrane pump (11) for flushing liquid is a positive displacement pump.

9. A filtering device according to claim 5, characterized in that a second pH meter (20) is connected to the rinsing mother liquor preparation tank (21).

10. The filtering device according to claim 7, characterized in that said first safety valve (9) is a C.S.O spring-loaded safety valve.