JP2019520210A - Water treatment filter system for exhaust gas recirculation system - Google Patents

Abstract

The present invention relates to a water treatment filter system for an exhaust gas recirculation system. To this end, the present invention includes a buffer tank unit to which cleaning contaminated water is supplied from the receiving tank unit, and a regeneration filter member discharged from the sludge reduction unit in the cleaning contaminated water discharged from the buffer tank unit. A water treatment unit to which mixed contaminated water is supplied and the sludge mixed with the waste filter member is discharged from the water treatment unit, and the waste filter member is separated from the discharged sludge and stored in the regeneration filter member. And a sludge reduction unit disposed to be mixed with the wash contaminated water discharged from the buffer tank unit. [Selected figure] Figure 4

Description

  The present invention relates to a water treatment filter system for an exhaust gas recirculation system, and in particular, after a mixture of fresh water and a new filter member flows into the inside of a housing body, the new filter member is The housing body is adsorbed onto the surface of the unit filter unit to form a filter layer, and then the cleaning contaminated water containing sulfur oxides and foreign matter of particulate matter is mixed with the regeneration filter member. The filter member can be prevented from being clogged by the regeneration filter member while the fresh water from which the foreign matter has been removed is discharged through the filter layer after being supplied to the It is intended to be usable.

  In general, diesel engines are pointed out as the main cause of air pollution because diesel engines emit more nitrogen oxides (NOx) and particulate matter due to the characteristics of lean combustion than gasoline engines.

  Nitrogen oxides cause photochemical reaction by sunlight to induce generation of ozone to induce respiratory diseases etc. Fine dust is small dust with a particle diameter of 10 μm or less and easily penetrates the respiratory system. By being adsorbed to the lungs, it affects the bronchus and induces lung cancer.

  Implement a scheme to solve such problems, resupply a part of the exhaust gas generated after combustion to the combustion chamber, lower the temperature for combustion, and detect the concentration of oxygen. It suppresses the formation of nitrogen oxides (NOx).

  However, in the nitrogen oxide suppression method, the strongly acidic sulfur oxides (SOx) and particulate matter (fine substances generated during combustion) contained in the exhaust gas are used as they are when the exhaust gas is recycled and used. As a result of the inflow into the engine cylinder, there is a problem that the combustion efficiency of the engine is significantly reduced, and a wiping device is required to wipe this.

  Although such a wiping device adopts a method of providing a filter in the exhaust duct, the filter tends to be clogged, and there is a problem such as a large loss of pressure, so that the cinder does not occur. Since the loss of pressure is small, it is easy to install in the exhaust duct.

  Since an electrostatic precipitator is difficult to process gas components such as SOx in exhaust gas, there is one that applies a method of cleaning exhaust gas discharged from an engine to remove SOx and particulate matter (particulate matter).

  In addition to the electrostatic precipitating method, a scrubber for gas cleaning is disposed as a device for cleaning the exhaust gas accompanying combustion discharged from the diesel engine to reduce SOx and particulate matter, and the scrubber is The seawater used for washing is supplied to the centrifugal separation unit to remove soot dust, and the seawater separated from the dust is supplied to the oil removal unit, the oil is removed by a filter, and the seawater from which the oil is removed is neutralized. There has been proposed a waste water treatment apparatus in which seawater subjected to neutralization treatment is supplied again to a gas scrubber after being supplied to a part to be neutralized and used for scrubbing exhaust gas.

However, in place of the electrostatic precipitating system, the same device removes exhaust dust and SOx by supplying exhaust gas discharged from a diesel engine to a gas cleaning scrubber and cleaning the exhaust gas with seawater. Since a large amount of seawater is used, there has been a problem that a large scale water treatment apparatus for treating waste water containing dust is desired.

  In addition, due to the complexity of the structure of the filter used for water treatment, there is a problem that the additional cost associated with the manufacture and handling of the filter is high.

Republic of Korea Patent Publication No. 10-2015-92315 (August 12, 2015)

  The present invention, while increasing the filtering efficiency in a water treatment filter system, allows the filter element to be reused to reduce the cost associated with filter manufacture and handling.

  In the buffer tank unit, the sludge reduction on the suction side of the first pump is carried out while the washing contaminated water flows into the buffer tank and the washing contaminated water that flows in is supplied to the water treatment unit by the first pump. The regeneration filter member discharged from the unit is disposed to be mixed, and a part of the fresh water discharged from the water treatment unit is supplied to and discharged from the buffer tank.

  Furthermore, the housing body is characterized in that the cylindrical lower portion is formed with an inlet having a flange, the upper portion is formed with a connecting port having a flange, and the outer side of the lower portion of the housing body is supported by a fixed frame. Do.

  Furthermore, the filter fixing piece has a through hole formed along the periphery of a fixing piece body having a disk shape, a stepped female screw hole formed inside the fixing piece body, and the fixing piece body. And an air inflow hole formed to face the inside and the lower part from the outer peripheral edge of the frame.

  Furthermore, the unit filter unit is coupled to a support bar having upper and lower male threads formed at upper and lower ends, a coil member fitted in the support bar, and a lower portion of the coil member. A lower end cap, a lock nut screwed to a lower male screw portion exposed to the lower part through the lower end cap, an upper end cap connected to the upper part of the coil member, and the upper end cap And a lock nut screwed to the upper male screw exposed in the upper part.

  Furthermore, the coil member is formed so that a steel material having a square-shaped cross section is spirally wound, and the gap between one side and the other side spirally wound is 20 to 58 μm. It features.

  Furthermore, the lower end cap is characterized in that a guide projection having a lower through hole projecting upward is formed at the center of the bottom surface of the lower end cap body having a cylindrical shape in which only the upper part is open. Do.

Furthermore, the upper end cap includes an upper end cap body having a polygonal shape, a male screw member protruding in a step-like manner at a lower portion of the upper end cap body, and the inner side of the upper end cap body from the lower portion of the male screw member. A guide recess formed to have a step-like shape toward the end, an upper through hole formed on the ceiling side of the guide recess, and a discharge passage hole formed around the upper through hole. It is characterized by

  Furthermore, the discharge passage hole is formed to have a sector shape.

  Then, the sludge reduction unit includes a sludge tray, from which the mixed sludge of the waste filter member is discharged from the water treatment unit, and the mixed sludge of the waste filter member from the sludge tray through the third pump. The hydrocyclone to be supplied, the body feed tank where the regeneration filter members separated from the hydrocyclone collect, the sludge tank where the sludge separated from the hydrocyclone collect, and the fourth pump from the body feed tank A regeneration filter member is supplied to the suction side of the first pump.

  According to the present invention, after a mixture of fresh water and a new filter member flows into the inside of the housing body, the new filter member is adsorbed on the surface of the unit filter unit in the procedure of the fresh water getting out of the unit filter unit After being supplied to the housing body in the state where it is formed and then mixed with the regenerating filter member, the cleaning contaminating water containing sulfur oxides and foreign matter of particulate matter is supplied to the housing body, and then through the filter layer. The effect is obtained that only fresh water from which foreign matter has been removed is discharged.

  Further, through this, the regeneration filter member bites into the surface of the filter layer by a predetermined depth, so that the effect of blocking the filter layer can be prevented.

  Furthermore, if the efficiency of the filter layer adsorbed to the unit filter unit becomes low through this, air is supplied from the outside to separate and remove the filter layer, and then a new filter layer is formed by the new filter member. By making the system be used through the repetition of the deployed procedure, the effect is obtained that the implementation cost of the water treatment can be reduced.

  Furthermore, by separating the waste filter member and the sludge from the mixed sludge of the waste filter member discharged to the outside of the housing body, the regenerated filter member separated from the sludge can be supplied again to the housing body. The effect is that the implementation cost can be further reduced.

  Furthermore, by making the coil member of the unit filter unit have a square-shaped cross section, there is an effect that the spacing maintaining projection is accurately positioned between the coil members in the procedure in which the coil member is coiled. In addition, in the procedure biased by the upper end cap and the lower end cap, it is possible to prevent twisting.

  And, by maintaining the gap formed between the coil members by the gap maintaining projection to maintain a constant gap, a filter layer having a uniform gap can be obtained.

The perspective view which shows the water treatment filter part in the water treatment filter system for exhaust gas recirculation systems concerning the present invention The disassembled perspective view which shows the water treatment filter part in the water treatment filter system for exhaust gas recirculation systems which concerns on this invention Longitudinal sectional view showing a water treatment filter part in a water treatment filter system for exhaust gas recirculation system according to the present invention Block diagram showing a water treatment filter system for an exhaust gas recirculation system according to the present invention

  Hereinafter, an embodiment of the present invention will be described based on the attached drawings.

  FIG. 1 is a perspective view showing a water treatment filter part in a water treatment filter system for an exhaust gas recirculation system according to the present invention, and FIG. 2 is a water treatment filter part in a water treatment filter system for an exhaust gas recirculation system according to the present invention. FIG. 3 is a longitudinal sectional view showing a water treatment filter part in a water treatment filter system for exhaust gas recirculation system according to the present invention, and FIG. 4 is an exhaust gas recirculation system according to the present invention. It is a block diagram showing a water treatment filter system.

  A water treatment filter system for an exhaust gas recirculation system according to the present invention comprises a buffer tank unit BTU, a water treatment unit WTU and a sludge reduction unit SRU as shown in FIG. 4, and the buffer tank unit BTU is receiving The tank unit RTU is arranged to be supplied with the cleaning contaminated water PW, and the water treatment unit WTU is a regeneration filter member discharged from the sludge reduction unit SRU to the cleaning contaminated water PW discharged from the buffer tank unit BTU. RP is deployed so that mixed contaminated water mixed is supplied.

  In the buffer tank unit BTU, suction of the first pump P1 is performed while the washing contaminated water PW flows into the buffer tank BT and the washing contaminated water PW that flows in is supplied to the water treatment unit WTU by the first pump P1. The regeneration filter member RP discharged from the sludge reduction unit SRU is disposed on the side so as to be mixed. At this time, the buffer tank BT is disposed so that part of the fresh water FW discharged from the water treatment unit WTU is supplied and discharged.

  The water treatment unit WTU comprises one or more water treatment filter units A, and is constituted by a pre-coating tank PCT in which a new filter member NP is supplied to the water treatment filter unit A by a second pump P2 There is.

  Here, as shown in FIGS. 1 to 3, the water treatment filter unit A includes a housing body 100, a filter fixing piece 200 disposed at an upper portion of the housing body 100, and the filter fixing piece 200. The unit filter unit 300 and the housing cap 400 which were inserted in the inside of.

  The housing body 100 has a cylindrical lower portion formed with an inlet 110 having a flange F, and is connected to a pipeline provided with a first pump P1 in a buffer tank unit BTU. A connection port 120 having a flange F at the top is formed and connected to the pipeline so that fresh water FW can be supplied to the buffer tank unit BTU and the pre-coating tank PCT.

The pre-coating tank PCT is configured such that fresh mixed fresh filter member NP is supplied via the second pump P2 before the cleaning contaminated water PW is supplied to the inside of the housing body 100. The filter layer FL can be formed by being adsorbed so as to have a predetermined thickness on the surface of the coil member 320 of the unit 300. The new filter member NP is made of a porous material, preferably diatomaceous earth is used as the porous material, and in addition to such diatomaceous earth, charcoal or other porous materials can be used.

  On the both sides of the housing body 100, the sight glass SG having the inside is provided, and the foreign matter discharge port 130 for discharging the sludge and the waste filter member DP is provided outside the lower end formed with the inflow port 110. ing.

  The filter fixing piece 200 separates the internal space of the housing body 100 and the internal space of the housing cap 400 while the unit filter unit 300 is stably fixed. Is provided so as to provide a function of disassembling the filter layer FL formed on the surface of and the foreign matter discharge port 130.

  The filter fixing piece 200 is formed with a through hole 211 along the circumference of the fixing piece body 210 having a disk shape so that the bolt B can be stably coupled between the housing body 100 and the housing cap 400. At least one stepped internal screw hole 212 is formed in the fixed piece body 210 so that the unit filter unit 300 can be stably connected.

  An air inflow hole 213 is formed on the outer peripheral edge of the fixed piece body 210 so as to face the inside and the lower part of the fixed piece body 210 from the surface, and a pipeline is coupled to an air supply port not shown. When high pressure air is supplied or jetted into the interior of the housing, the interior is cleaned to dispose the waste filter member DP, sludge and the like.

  The filter fixing piece 200 is disposed between the housing body 100 and the housing cap 400 in a state where the seal rings S are in contact with the upper and lower portions, respectively, and the water tightness can be maintained.

  The unit filter unit 300 includes a support bar 310, a coil member 320, a lower end cap 330, a lock nut LN and an upper end cap 340, and the support bar 310 has an upper end and a lower end, respectively. The upper male screw portion 311 and the lower male screw portion 312 are formed, and the coil member 320 is inserted so as to have a penetrating shape.

  A lower end cap 330 is fitted to the support bar 310 exposed through the lower portion of the coil member 320, and a lock nut LN is coupled to the lower male screw portion 312 exposed through the lower end cap 330. It is deployed so that the phenomenon of loosening can be prevented.

  An upper end cap 340 is coupled to an upper portion of the coil member 320, and a lock nut LN is screwed into an upper male screw portion 311 exposed to the upper portion through the upper end cap 340 so that a loosening phenomenon can be prevented. It is deployed.

  The coil member 320 is formed so that a steel wire SW having a square-shaped cross section is spirally wound, with a gap C between one side and the other side spirally wound. After the foreign matter contained in the cleaning contaminated water PW is removed, only clean water can be passed through.

  Such gap C preferably has 20 to 58 μm, and as a material of the new filter member NP used at this time, diatomaceous earth having a diameter of 40 to 60 μm is preferably used. At this time, the new filter member NP can be prevented from coming out through the gap C. In the present invention, the gap C is made to have 20 to 58 μm, but when it contains large foreign particles, it may be made to have a distance of 120 μm or more.

  On the other hand, since the coil member 320 has a square cross section, as shown in the lower left part of FIG. 2, the space maintaining projection SP having a fixed space on the upper surface of the steel wire SW before coiling is made in the longitudinal direction. When coiling with a steel wire SW having a rectilinear and square-shaped cross section formed to be repeated, it is possible to prevent twisting, and the space maintaining projection SP is provided on one side and the other side, or on the upper side. It becomes possible to be deployed in the exact position between the lower part. That is, when the coiling step is performed by fixing the surface other than the surface on which the distance maintaining projection SP is formed to the steel wire SW, the steel wire SW can be prevented from twisting, and through this, one side of the coil member 320 It is possible for the spacing maintenance projection SP to be located between the other side.

  The lower end cap 300 has a cylindrical shape in which only the upper part is open, and a guide protrusion 333 having a lower through hole 332 projecting toward the upper part is formed at the center of the bottom surface of the lower end cap body 331. The support bar 310 is so disposed as to be able to prevent the movement in the direction perpendicular to the axis when the support bar 310 is fitted to penetrate.

  The lower end cap 300 is maintained in a state where the lower end of the coil member 320 is fitted at a predetermined depth, so that a certain pressure is applied to the coil member 320 as a whole, the coil member 320 is The gap maintaining protrusion SP can maintain the gap C having a uniform distance over the entire length.

  The upper end cap 340 allows the upper portion of the unit filter unit 300 to be stably fixed to the filter fixing piece 200, and only pure water from which foreign matter is removed by the filter layer FL is inside the housing cap 400. The upper end cap body 341, the male screw member 342, the guide recess 343, the upper through hole 344 and the discharge passage hole 345 are integrally provided.

  Here, the upper end cap body 341 is a scheme devised to facilitate assembly and disassembly, and the outside, that is, the outer peripheral edge portion is formed to have a polygonal shape, and the male screw member The reference numeral 342 is formed to protrude in a step-like manner in the lower part of the upper end cap body 341 and is disposed so as to be screwed into the female screw hole 212.

  The guide recess 343 is formed to have a step shape from the lower portion of the male screw member 342 toward the inside of the upper portion of the upper end cap body 341, and the upper end of the coil member 320 of the unit filter unit 300 has a predetermined depth. And the coiled member 320 is disposed so as to prevent the upper end portion of the coil member 320 from being twisted.

  The upper through hole 344 is formed on the ceiling side of the guide recess 343 so that the water removed from the foreign matter moved upward through the inside of the coil member 320 can flow smoothly into the upper through hole 344. It is arranged to be able to be discharged into the inside of the housing cap 400 through a discharge passage hole 345 formed around the hole 344.

  Such a discharge passage hole 345 is discharged as foreign matter while the upper male screw portion 311 formed at the upper end of the support bar 310 penetrates and is stably fixed to the lock nut LN. It is a scheme devised to facilitate the discharge of water, and it is preferable to have a sector shape.

  An inlet 110 is formed at a lower portion of the housing body 100, and an outlet 410 is formed in the housing cap 400. Thus, a mixture of water and diatomaceous earth through the inlet 110 is obtained. After flowing in, the mixture passes through the unit filter unit 300 and the filter fixing piece 200, and the diatomaceous earth of the mixture flowed in the procedure of being discharged to the discharge port 410 is adsorbed on the surface of the unit filter unit 300 and the filter layer FL can be formed. become.

  In the sludge reduction unit SRU, the sludge mixed with the waste filter member DP is discharged from the water treatment unit WTU, and the waste filter member DP is separated from the discharged sludge and stored in the regeneration filter member RP and stored. A filter member RP is provided so as to be mixed with the wash contaminated water PW discharged from the buffer tank unit BTU.

  In such a water treatment filter system for an exhaust gas recirculation system, first, the new filter member NP mixed with fresh water from the pre-coating tank PCT by the second pump P2 of the water treatment filter portion A before water treatment is performed The new filter member NP mixed with fresh water that has flowed into the interior of the housing body 100 via the inflow port 110 and has flowed into the interior of the housing body 100 has a gap C formed in the coil member 320 of the unit filter unit 300. In the procedure of discharging through the upper through hole 344 and the discharge passage hole 345 of the upper end cap 340 coupled to the filter fixing piece 200, only fresh water is pulled out through the gap C, and the new filter member NP Through the repetition of the phenomenon in which the Filter layer FL is formed to have a predetermined thickness on the surface of 320.

  Subsequently, the cleaning contaminated water PW is supplied to the buffer tank BT of the buffer tank unit BTU, and the cleaning contaminated water PW supplied to the buffer tank BT is supplied to the housing body 100 by the first pump P1. By supplying the regeneration filter member RP in a state of being supplied and mixed by the fourth pump P4 of the SRU, the state where the regeneration filter member RP bites into the filter layer FL by a predetermined depth is repeated. It becomes possible to prevent the blocking phenomenon and to prevent the filtering rate from becoming low.

  Then, the cleaning contamination water is cleaned by the filter layer FL disposed outside the coil member 320 in the procedure of being discharged through the discharge channel hole 345 of the upper end cap 340 disposed at the top of the unit filter unit 300 and the housing cap 400. By removing oil and particulate matter contained in PW, only fresh water can be discharged.

  Next, in a procedure in which only fresh water is discharged after being filtered by the filter layer FL, the sludge and the waste filter member DP are collected in the sludge tray STY of the sludge reduction unit SRU, and then the waste filter member DP is collected by the third pump P3. The mixed sludge is supplied to the hydrocyclone HS, and the waste filter member DP and the sludge are separated by centrifugal force.

Then, the waste filter member DP separated from the sludge is regenerated by the regeneration filter member RP and stored in the body feed tank BFT, and then the stored regeneration filter member RP is cleaned by the fourth pump P4 into the cleaning contaminated water PW By being included and flowing into the interior of the housing body 100, it becomes possible to continue using. At this time, the sludge separated from the waste filter member DP may be treated so as to be collected in the sludge tank STK.

BTU buffer tank unit DP waste filter member RP regeneration filter member RTU receiving tank unit SRU sludge reduction unit WTU water treatment unit 100 housing body 110 inlet 120 connection port 200 filter fixing piece 210 fixing piece body 211 through hole 212 female screw hole 213 inflow hole 300 unit filter unit 310 support bar 311 upper male screw part 312 lower male screw part 320 coil member 330 lower end cap 340 upper end cap 400 housing cap 410 outlet

Claims (10)

A buffer tank unit supplied with cleaning contaminated water from the receiving tank unit;
A water treatment unit which is supplied with mixed contaminated water in which the regeneration filter member discharged from the sludge reduction unit is mixed with the washed contaminated water discharged from the buffer tank unit;
The mixed sludge of the waste filter member is discharged from the water treatment unit, the waste filter member is separated from the discharged sludge and stored in the regeneration filter member, and the stored regeneration filter member is discharged from the buffer tank unit A sludge reduction unit deployed to be mixed with the contaminated water,
Equipped with
The water treatment unit comprises one or more water treatment filter units, and a pre-coating tank in which a new filter member is supplied to the water treatment filter unit by a second pump,
The water treatment filter unit is mounted on a housing body, a filter fixing piece disposed on the upper portion of the housing body, a unit filter unit fitted into the inside of the housing body by the filter fixing piece, and mounted on the filter fixing piece And a housing cap that is positioned and bolted together;
An inlet is formed at a lower portion of the housing body, an outlet is formed in the housing cap, and a mixture of fresh water and a new filter member flows in through the inlet, and then the mixture is combined with the unit filter unit. Water treatment for exhaust gas recirculation system characterized in that a new filter member of the mixture flowing in the procedure of being discharged to the discharge port via the filter fixing piece is adsorbed on the surface of the unit filter unit to form a filter layer. Filter system.   The buffer tank unit is connected to the suction side of the first pump from the sludge reduction unit while the washing contaminated water flows into the buffer tank and the flowing washed pollution water is supplied to the water treatment unit by the first pump. The exhaust gas according to claim 1, wherein the discharged regeneration filter member is disposed to be mixed, and a part of fresh water discharged from the water treatment unit is supplied and discharged to the buffer tank. Water treatment filter system for circulation system.   The housing body has a cylindrical lower portion formed with an inlet having a flange, and an upper portion formed with a connecting port having a flange, and the outer side of the lower portion of the housing body is supported by a fixed frame. The water treatment filter system for exhaust gas recirculation systems according to Item 1. The filter fixing piece is
A through hole formed along the circumference of a fixed piece body having a disk shape;
A step-like female screw hole formed inside the fixed piece body;
An air inlet formed to face the inside and the lower part from the outer peripheral edge of the fixed piece body;
The water treatment filter system for an exhaust gas recirculation system according to claim 1, comprising: The unit filter unit is
A support bar having upper male threads and lower male threads formed at upper and lower ends, respectively;
A coil member fitted into the support bar;
A lower end cap coupled to a lower portion of the coil member;
A lock nut screwed to a lower male screw portion exposed to the lower side through the lower end cap;
An upper end cap coupled to an upper portion of the coil member;
A lock nut screwed into the upper male screw portion exposed to the top through the upper end cap;
The water treatment filter system for an exhaust gas recirculation system according to claim 1, comprising:   The coil member is formed so that a steel wire having a square-shaped cross section is spirally wound, and a gap between one side and the other side spirally wound is 20 to 58 μm. A water treatment filter system for an exhaust gas recirculation system according to claim 5.   The lower end cap may be formed with a guide protrusion having a lower through hole projecting upward at the center of a bottom surface of a lower end cap body having a cylindrical shape in which only the upper portion is open. A water treatment filter system for an exhaust gas recirculation system according to 5. The upper end cap is
An upper end cap body having a polygonal shape,
A male screw member protruding in a step-like manner at a lower portion of the upper end cap body;
A guide recess formed to have a step-like shape from the lower portion of the male screw member toward the inside of the upper portion of the upper end cap body;
An upper through hole formed on the ceiling side of the guide recess;
A discharge passage hole formed around the upper through hole;
A water treatment filter system for an exhaust gas recirculation system according to claim 5, comprising:   The water treatment filter system for the exhaust gas recirculation system according to claim 8, wherein the discharge passage hole is formed to have a sector shape. The sludge reduction unit
A sludge tray from which the mixed sludge of waste filter members is discharged from the water treatment unit;
A hydrocyclone to which the mixed sludge of the waste filter member is supplied from the sludge tray via a third pump;
A body feed tank collecting regeneration filter members separated from the hydrocyclone;
A sludge tank in which sludge separated from the hydrocyclone is collected;
The water treatment filter system for an exhaust gas recirculation system according to claim 1, wherein the regeneration filter member is supplied from the body feed tank to the suction side of the first pump via the fourth pump.