CN116143229A - Dirty oil treatment device and process thereof - Google Patents

Dirty oil treatment device and process thereof Download PDF

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Publication number
CN116143229A
CN116143229A CN202211102518.7A CN202211102518A CN116143229A CN 116143229 A CN116143229 A CN 116143229A CN 202211102518 A CN202211102518 A CN 202211102518A CN 116143229 A CN116143229 A CN 116143229A
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convection
pipeline
oil
convection pipeline
disc
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CN202211102518.7A
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CN116143229B (en
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李斐
刘杰
王伟
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Xinchang Technology Co ltd
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Cangzhou Xinchang Chemical Corp
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00Multistage treatment of water, waste water or sewage
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/38Treatment of water, waste water, or sewage by centrifugal separation
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/40Devices for separating or removing fatty or oily substances or similar floating material
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/52Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00Specific treatment goals
    • C02F2303/14Maintenance of water treatment installations

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  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)

Abstract

The invention relates to the field of dirty oil treatment, in particular to a dirty oil treatment device which comprises a bracket, a horizontal screw centrifuge, a sludge drying machine, a disc separation heart machine, a medicine oil mixer and a stirrer, wherein a dirty oil inlet and a medicine adding port are symmetrically formed in the upper half part of the medicine oil mixer, a plurality of discharge ports are formed in the bottom center of the medicine oil mixer, the stirrer also comprises a deposition-preventing convection device for promoting the mixing of upper dirty oil and bottom oil sludge, the deposition-preventing convection device comprises a convection pipeline, an upper drainage mechanism, a bottom drainage mechanism and a driving device, a plurality of strip-shaped ports are uniformly formed in the upper half part of the convection pipeline along the circumferential direction of the convection pipeline, a plurality of lower end notch are uniformly formed in the lower half part of the convection pipeline along the circumferential direction of the convection pipeline. The invention also relates to a dirty oil treatment process.

Description

Dirty oil treatment device and process thereof
Technical Field
The invention relates to the field of dirty oil treatment, in particular to a dirty oil treatment device. The invention also relates to a dirty oil treatment process.
Background
The dirty oil is formed by long-time deposition of oil products at the bottom of a crude oil storage tank, a dirty oil tank, a finished oil storage tank and the like in a refinery, and the dirty oil components are emulsified by oil, water and fine suspended matters, so that the dirty oil is difficult to separate, and the general dirty oil has the following characteristics: the bottom is the fatlute that the solid content is very high, and it is faster that the sediment is comparatively big, and the density is higher, and the upper portion is that profit does not divide dirty oil, and density is lighter, and to treat dirty oil successfully, there are two following conditions: firstly, pure oil and water are naturally separated together, dirty oil is difficult to separate, namely, oil-water separation is unclear because of fine suspended matters doped in the oil and the water, and how to remove the suspended matters in the dirty oil is a precondition of successfully separating the oil and the water; secondly, some slightly bigger suspended matters in the dirty oil can be deposited at the bottom rapidly, pipelines and equipment can be blocked in the treatment process, so that how to mix the oily sludge deposited at the bottom with the dirty oil at the upper part in a short time to form certain fluidity, and the oily sludge is not deposited, which is another important condition for treating the dirty oil, the suspended matters in the dirty oil are different from the suspended matters in the water, the suspended matters in the water are easy to remove through flocculation and precipitation processes by adding a flocculating agent, and the suspended matters in the dirty oil are shown to be deposited at the bottom rapidly and can not be deposited at the upper part forever, therefore, the suspended matters at the bottom and the upper part are required to be combined together to form an oil floccule with relatively large flocculation strength, and the oily sludge is separated through separation equipment.
As shown in figure 1, after the conventional raw material dirty oil enters an oil-gas separator, the conventional raw material dirty oil is circularly heated by a material circulating pump at a flow rate which is 16-20 times of the feeding amount through a turbulent heater, and a large flow of turbulent flow circulates, so that suspended matters in the dirty oil can be fully mixed through turbulent flow to avoid deposition, the dirty oil is heated to be above 80 ℃ through heating, the dirty oil is conveyed into a medicine oil mixer by a dirty oil conveying pump, the medicine oil mixer is provided with a stirrer, a demulsification and dosing system and a flocculation and dosing system are used for beating demulsifier and flocculant into the medicine oil mixer, the dirty oil and the medicine are fully mixed, the dirty oil and the medicine are subjected to horizontal spiral feed pump, the liquid passes through the turbulent flocculation device to form floccules, the floccules are pumped into a horizontal spiral centrifuge, solid and liquid can be separated, the liquid enters an oil-water mixing tank, the oil-water feed pump is pumped into a disc separation core machine, the disc separation core machine is subjected to high-speed centrifugation, the oil and the separation core machine is generally controlled to be subjected to 5000-6500 r/min, the oil and water separation are completed through high-speed centrifugation, and the solid cake generated by the horizontal spiral centrifuge enters a sludge dryer to be treated, and dried, and the sludge cake is uniformly treated.
The device for treating the dirty oil in the oil refinery of the China patent CN202110959246.1 disclosed at present comprises a mixing assembly, a variable flow assembly and a centrifugal assembly, wherein the mixing assembly comprises a mixing box, and a discharge hole is formed in the bottom of the mixing box; the centrifugal component comprises a separation box, and four oil inlets are arranged above the separation box in a rectangular array; the variable flow assembly comprises a first oil pipe and a second oil pipe, one end of the first oil pipe is connected with a discharge port of the mixing box, the other end of the first oil pipe is connected with one end of the second oil pipe through a plurality of communicating pipes, the other end of the second oil pipe is provided with a first shunt pipe, the other end of the first shunt pipe is symmetrically provided with a second shunt pipe through a shunt valve, and the second shunt pipes are respectively connected with an oil inlet.
According to the above patent, the dirty oil is mixed with the chemical by the mixing unit and the solid and liquid are separated by the centrifugal unit, however, the patent cannot sufficiently mix the bottom sludge with the upper dirty oil, and the mixing effect is poor, so a treatment apparatus capable of mixing the upper sludge with the deposited sludge is currently required.
Disclosure of Invention
Based on this, it is necessary to provide a dirty oil treatment device to prior art problem, and this application has promoted the great oily floc of formation through the effect of upper portion drainage mechanism and bottom drainage mechanism, makes things convenient for follow-up to solid-liquid separation, has improved treatment effeciency.
In order to solve the problems in the prior art, the invention adopts the following technical scheme:
the invention provides a dirty oil treatment device which comprises a bracket, a horizontal decanter centrifuge, a sludge drying machine, a disc separation heart machine, a medicine oil mixer and a stirrer, wherein the bracket is arranged on the bracket; the medicine oil mixer is of a tank-shaped structure, the medicine oil mixer is arranged on the bracket, the upper half part of the medicine oil mixer is symmetrically provided with a dirty oil inlet and a medicine adding port, and the bottom center of the medicine oil mixer is provided with a discharge port; the plurality of stirrers are uniformly distributed in the medicine oil mixer along the circumferential direction of the medicine oil mixer; the anti-sedimentation convection device is used for promoting the mixing of the upper dirty oil and the bottom oil sludge and comprises a convection pipeline, an upper drainage mechanism, a bottom drainage mechanism and a driving device; the upper half part of the convection pipeline is uniformly provided with a plurality of strip-shaped openings along the circumferential direction of the convection pipeline, and the lower half part of the convection pipeline is uniformly provided with a plurality of lower end notches along the circumferential direction of the convection pipeline; the upper drainage mechanism is arranged on the convection pipeline and is positioned outside the convection pipeline; the bottom drainage mechanism is arranged on the convection pipeline and is positioned in the convection pipeline, and the bottom drainage mechanism is also positioned at the notch of the lower end of the convection pipeline; the driving device is arranged on the medicine oil mixer and positioned in the convection pipeline, and is also connected with the bottom drainage mechanism.
Preferably, the upper drainage mechanism comprises a sleeve, a disc-shaped floating plate, a guiding rod, a columnar floating plate and a mouth covering piece; the sleeve is coaxially sleeved on the convection pipeline, and a plurality of butt joint notches corresponding to each strip-shaped opening are uniformly formed in the sleeve along the axis direction of the sleeve; the disc-shaped floating plate is coaxially sleeved on the convection pipeline and is also fixed at the top end of the sleeve; the plurality of guide rods are uniformly distributed along the circumferential direction of the convection pipeline, two ends of each guide rod are respectively and fixedly connected to the top end of the convection pipeline and the bottom end of the convection pipeline, the axial direction of each guide rod is parallel to the axial direction of the convection pipeline, and the sleeve and the disc-shaped floating plate are both sleeved on the plurality of guide rods in a sliding manner; the columnar floating plate is coaxially arranged in the convection pipeline, the diameter of the columnar floating plate is equal to the inner diameter of the convection pipeline, and the columnar floating plate is correspondingly connected with the sleeve; the mouth shielding piece is arranged on the convection pipeline and is also connected with the sleeve.
Preferably, the lower end of the sleeve is provided with a convex plate extending towards the inside of the convection pipeline through the strip-shaped opening at each butt joint notch, and the lower end of the columnar floating plate is provided with a step opening corresponding to each convex plate.
Preferably, the bottom drainage mechanism comprises an end disc, a piston and a baffle plate; the end disc is coaxially arranged in the convection pipeline, and the diameter of the end disc is equal to the inner diameter of the convection pipeline; the piston is coaxially arranged in the convection pipeline, the diameter of the piston is equal to that of the end disc, and the piston is fixedly connected to the upper surface of the end disc; the baffle has a plurality ofly, and the quantity of baffle equals the quantity of convection duct lower extreme notch, and a plurality of baffles all set up at the lower surface of end dish, and a plurality of baffles are along the circumferencial direction evenly distributed of end dish to every baffle still corresponds a lower extreme notch respectively.
Preferably, the driving means comprises a first lifting bar and a first lifter; the first lifting rod is coaxially arranged in the convection pipeline, the diameter of the first lifting rod is smaller than the inner diameter of the convection pipeline, the upper end of the first lifting rod penetrates through the top of the medicine oil mixer to extend outwards, the lower end of the first lifting rod extends to the top of the end plate to be fixedly connected with the top of the end plate, the columnar floating plate is sleeved on the first lifting rod, the inner diameter of the columnar floating plate is larger than the diameter of the first lifting rod, and the piston is fixedly sleeved on the first lifting rod; the first lifter is arranged at the top end of the medicine oil mixer and is connected with the first lifting rod.
Preferably, the wall scraping mechanism is used for preventing the oil stains from adhering to the inner wall of the convection pipeline and the bottom of the end disc, and comprises a rotating rod, a first stirring blade, a second stirring blade and a rotary driver; the rotating rod is coaxially arranged in the convection pipeline, the diameter of the first lifting rod is larger than that of the rotating rod, a socket with the same diameter as the rotating rod is formed in the first lifting rod along the axis direction of the first lifting rod, the rotating rod is rotatably inserted in the socket of the first lifting rod, the upper end of the rotating rod is connected with the first lifting rod through a bearing, and the lower end of the rotating rod penetrates through the end disc to extend downwards; the first stirring blades are arranged on the rotating rod and positioned among the baffles, and the edges of the first stirring blades are in contact with the lower surface of the end disc; the second stirring blade is arranged on the rotating rod and is positioned below the first stirring blade, and the edge of the second stirring blade can also be in contact with the inner wall of the convection pipeline; the rotary driver is arranged at the top end of the rotating rod, and an output shaft of the rotary driver is fixedly connected with the top end of the rotating rod.
Preferably, the mouthpiece has a first bellows and a second bellows; the first corrugated pipe is sleeved on the convection pipeline, and two ends of the first corrugated pipe are fixedly connected to the upper end of the convection pipeline and the upper end of the sleeve respectively; the second corrugated pipe is sleeved on the convection pipeline, and two ends of the second corrugated pipe are fixedly connected to the lower end of the sleeve and the lower end of the convection pipeline respectively.
Preferably, the device also comprises a positioning mechanism for ensuring that the disc-shaped floating plate always floats on the oil surface, wherein the positioning mechanism comprises a magnetic attraction piece and a contact piece; the number of the magnetic attraction pieces is equal to the number of the convex plates on the sleeve, and each magnetic attraction piece is respectively arranged between one convex plate and the corresponding step opening; the conflict piece sets up at the top of medicine oil blender and conflict piece still is located medicine oil blender.
Preferably, the magnetic attraction member has a first magnet and a second magnet; the first magnet is fixed on the convex plate; the second magnet is fixed in the step opening corresponding to the first magnet of the columnar floating plate.
The invention also provides a dirty oil treatment process, which comprises the following steps:
s1, introducing dirty oil into a medicine oil mixer, and floating a disc-shaped floating plate on the oil surface;
s2, adding the medicament into a medicament oil mixer, stirring by a stirrer, and displaying suspended matters in dirty oil;
s3, the driving device drives the bottom drainage mechanism to open a notch at the lower end, and deposited suspended matters enter the convection pipeline;
s4, as the bottom drainage mechanism moves upwards along the convection pipeline, the upper drainage mechanism opens the strip-shaped opening along with the bottom drainage mechanism, and floating suspended matters enter the convection pipeline;
s5, stirring the mixed suspended matters by the wall scraping mechanism to form oily flocs with relatively high flocculation strength.
Compared with the prior art, the beneficial effects of this application are:
1. the utility model provides a through upper portion drainage mechanism and bottom drainage mechanism's effect, realized that upper portion is difficult for heavy suspended solid and the easy heavy suspended solid's in bottom mixture, promoted to form great oily floc, make things convenient for follow-up to solid-liquid separation, improved treatment effeciency.
2. This application has promoted through the setting of disc floating plate telescopic butt joint notch and can introduce the convection current pipeline in, through the cooperation between column floating plate and the sleeve, has realized whether introducing the control in the convection current pipeline to upper portion suspended solid, avoids the abundant entering convection current pipeline of moisture to influence the mixture of upper portion suspended solid and bottom suspended solid.
3. According to the method, the columnar floating plate moves along with the disc-shaped floating plate in a mode that the columnar floating plate is supported on the sleeve, the butt joint notch is in a closed state when dirty oil is led in, the situation that the dirty oil is mixed with the chemical agent and then enters the convection pipeline is avoided, and the chemical agent and the dirty oil are not completely mixed is achieved.
4. According to the device, the piston moves in the convection pipeline, so that the bottom suspended matters are sucked into the convection pipeline, and the occurrence of deposition at the bottom of the medicine oil mixer is avoided.
5. The first lifting rod is driven to move through the first lifter, so that the piston is moved, the bottom suspended matters and the upper suspended matters are mixed, and the subsequent solid-liquid separation is facilitated.
6. This application has realized the clearance to end dish lower surface and convection current pipeline inner wall through first stirring vane and second stirring vane's setting, avoids dirty oil to adhere to at convection current pipeline inner wall and end dish lower surface, causes the piston in the activity in convection current pipeline unable bottom suspension to lead to the condition in the convection current pipeline.
Drawings
FIG. 1 is a process flow diagram of a prior art oil stain treatment;
FIG. 2 is a schematic perspective view of the present application;
FIG. 3 is a front view of the present application;
FIG. 4 is a top view of the present application;
FIG. 5 is a right side view of the present application;
FIG. 6 is a schematic view of a partial perspective view of the portion A-A of FIG. 4;
FIG. 7 is a cross-sectional view at B-B of FIG. 5;
FIG. 8 is a schematic perspective view of a deposition-resistant convection device;
fig. 9 is a front view of fig. 8;
FIG. 10 is a cross-sectional view at C-C of FIG. 9;
FIG. 11 is an enlarged schematic view at D of FIG. 8;
FIG. 12 is an enlarged schematic view at E of FIG. 8;
FIG. 13 is an enlarged schematic view at F of FIG. 7;
fig. 14 is an enlarged schematic view at G of fig. 7.
The reference numerals in the figures are:
1-a bracket;
2-a medicinal oil mixer; 2 a-dirty oil inlet; 2 b-a dosing port; 2 c-a discharge port;
3-a stirrer;
4-anti-deposition convection device; 4 a-convection duct; 4 b-upper drainage mechanism; 4b 1-sleeve; 4b 11-convex plate; 4b 2-a disc-shaped floating plate; 4b 3-guiding rod; 4b 4-columnar floating plates; 4b 5-a mouthpiece; 4b 51-first bellows; 4b 52-a second bellows; 4 c-a bottom drainage mechanism; 4c 1-end plates; 4c 2-piston; 4c 3-baffle;
5-a driving device; 5 A-A first lifting lever; 5 b-a first riser;
6-wall scraping mechanism; 6 a-rotating rod; 6a 1-bearings; 6 b-a first stirring blade; 6 c-a second stirring blade; 6 d-a rotary drive;
7-a positioning mechanism; 7 a-magnetic attraction piece; 7a 1-a first magnet; 7a 2-a second magnet; 7 b-a collision member; 7b 1-a second lifting bar; 7b 2-a second riser; 7b 3-photosensors.
Detailed Description
The invention will be further described in detail with reference to the drawings and the detailed description below, in order to further understand the features and technical means of the invention and the specific objects and functions achieved.
As shown in fig. 1-7, the present application provides:
a dirty oil treatment device comprises a bracket 1, a horizontal decanter centrifuge, a sludge drying machine, a disc separation heart machine, a medicinal oil mixer 2 and a stirrer 3; the medicine oil mixer 2 is in a tank-shaped structure, the medicine oil mixer 2 is arranged on the bracket 1, the upper half part of the medicine oil mixer 2 is symmetrically provided with a dirty oil inlet 2a and a medicine adding port 2b, and the bottom center of the medicine oil mixer 2 is also provided with a discharge port 2c; the plurality of stirrers 3 are arranged, and the plurality of stirrers 3 are uniformly distributed in the medicine oil mixer 2 along the circumferential direction of the medicine oil mixer 2; the anti-sedimentation convection device 4 is used for promoting the mixing of the upper dirty oil and the bottom oil sludge, and the anti-sedimentation convection device 4 comprises a convection pipeline 4a, an upper drainage mechanism 4b, a bottom drainage mechanism 4c and a driving device 5; the convection pipeline 4a is coaxially arranged in the medicine oil mixer 2, the upper end and the lower end of the convection pipeline 4a are respectively and fixedly connected with the top and the bottom of the medicine oil mixer 2, a plurality of strip-shaped openings are uniformly formed in the upper half part of the convection pipeline 4a along the circumferential direction of the convection pipeline, and a plurality of lower end notches are uniformly formed in the lower half part of the convection pipeline 4a along the circumferential direction of the convection pipeline; the upper drainage mechanism 4b is arranged on the convection pipeline 4a and is arranged outside the convection pipeline; the bottom drainage mechanism 4c is arranged on the convection pipeline 4a and is positioned in the pipe of the convection pipeline 4a, and the bottom drainage mechanism 4c is also positioned at the notch of the lower end of the convection pipeline 4 a; the driving device 5 is arranged on the medicine oil mixer 2 and positioned inside the convection pipeline 4a, and the driving device 5 is also connected with the bottom drainage mechanism 4 c.
Based on the above embodiments, the technical problem to be solved by the present application is how to mix the dirty oil on the upper part and the sludge deposited on the bottom fully. Therefore, after the dirty oil is introduced into the medicine oil mixer 2 along the dirty oil inlet 2a, as the dirty oil is composed of water, oil and fine suspended matters, a layer of dirty oil with fine suspended matters floats on the water surface, the bottom of the medicine oil mixer 2 is deposited with oily sludge with easily-deposited suspended matters, a demulsifier and a flocculating agent are added into the medicine oil mixer 2 through the medicine adding port 2b, a plurality of stirrers 3 stir the dirty oil and the medicament, the suspended matters in the dirty oil are shown to be quickly deposited at the bottom and can not be permanently floated at the upper part, in order to mix the easily-deposited suspended matters at the bottom and the difficultly-deposited suspended matters at the upper part together to form an oil floccule with relatively large flocculation strength, therefore, by the arrangement of the anti-deposition convection device 4, the strip-shaped port and the lower end slot of the convection pipeline 4a are in a closed state under normal state, when the dirty oil and the medicament are stirred and then are kept stand for a period of time, the driving device 5 drives the bottom drainage mechanism 4c to open the notch at the lower end of the convection pipeline 4a, the upper drainage mechanism 4b is also opened with the notch at the lower end of the convection pipeline 4a, under the action of the bottom drainage mechanism 4c, deposited suspended matters are sucked into the convection pipeline 4a, suspended matters floating on the water surface enter the convection pipeline 4a, the two are mixed together in a convection way, the mixing of the suspended matters promotes the formation of larger oil flocs, after the two are mixed for a period of time, the discharge port 2c of the medicament oil mixer 2 is opened, solid and liquid enter the horizontal screw centrifuge, the horizontal screw centrifuge can separate the solid and the liquid, the liquid enters the oil-water mixing box, the oil-water mixing box is driven into the disc separation heart machine through the oil-water feeding pump, the disc separation heart machine completes the separation of the oil and the water through high-speed centrifugation, the solid generated by the horizontal screw enters the sludge dryer for treatment, and uniformly treating the dried mud cakes.
Further, as shown in fig. 8 to 11:
the upper drainage mechanism 4b comprises a sleeve 4b1, a disc-shaped floating plate 4b2, a guide rod 4b3, a columnar floating plate 4b4 and a mouth covering piece 4b5; the sleeve 4b1 is coaxially sleeved on the convection pipeline 4a, and a plurality of butt joint notches corresponding to each strip-shaped opening are uniformly formed in the sleeve 4b1 along the axis direction; the disc-shaped floating plate 4b2 is coaxially sleeved on the convection pipeline 4a, and the disc-shaped floating plate 4b2 is also fixed at the top end of the sleeve 4b 1; the plurality of guide rods 4b3 are arranged, the plurality of guide rods 4b3 are uniformly distributed along the circumferential direction of the convection pipeline 4a, two ends of each guide rod 4b3 are respectively and fixedly connected to the top end of the convection pipeline 4a and the bottom end of the convection pipeline 4a, the axial direction of each guide rod 4b3 is parallel to the axial direction of the convection pipeline 4a, and the sleeve 4b1 and the disc-shaped floating plate 4b2 are respectively and slidably sleeved on the plurality of guide rods 4b 3; the columnar floating plate 4b4 is coaxially arranged in the convection pipeline 4a, the diameter of the columnar floating plate 4b4 is equal to the inner diameter of the convection pipeline 4a, and the columnar floating plate 4b4 is correspondingly connected with the sleeve 4b 1; the shutter 4b5 is provided on the convection duct 4a and the shutter 4b5 is also connected to the sleeve 4b 1.
Based on the above embodiment, the technical problem to be solved by the present application is how the upper drainage mechanism 4b can guide the floating suspended matter on the water surface into the convection duct 4 a. Therefore, by means of the arrangement of the disc-shaped floating plate 4b2, the disc-shaped floating plate 4b2 floats on the oil surface together with the sleeve 4b1 along with the dirty oil introduced into the medicine oil mixer 2, the columnar floating plate 4b4 also moves along with the disc-shaped floating plate 4b2 to shield the butt joint notch on the sleeve 4b1, dirty oil cannot enter the convection pipeline 4a along the strip-shaped notch under the action of the shielding piece 4b5 and in the state that the butt joint notch of the sleeve 4b1 is not opened, and the butt joint notch is opened along with the upward jacking of the columnar floating plate 4b4 by the driving device 5, so that suspended matters floating on the water surface enter the convection pipeline 4a along with the butt joint notch.
Further, as shown in fig. 13:
the lower end of the sleeve 4b1 and the inside of the convection pipeline 4a passing through the strip-shaped opening at each butt joint notch extend to form a convex plate 4b11, and the lower end of the columnar floating plate 4b4 is provided with a step opening corresponding to each convex plate 4b 11.
Based on the above-described embodiment, the technical problem to be solved by the present application is how the columnar floating plate 4b4 moves along with the disk-like floating plate 4b 2. For this reason, this application is through the setting of protruding board 4b11 on sleeve 4b1 and the setting of step mouth on the columnar floating board 4b4, and columnar floating board 4b4 passes through the step mouth to be supported on protruding board 4b11 of sleeve 4b1, and columnar floating board 4b4 can follow disk-like floating board 4b2 along with this, and columnar floating board 4b4 also has shielded the butt joint notch of sleeve 4b1, when carrying out thrust to columnar floating board 4b4, and columnar floating board 4b4 just leaves sleeve 4b1, and the butt joint notch of sleeve 4b1 is opened thereupon.
Further, as shown in fig. 10 and 12:
the bottom drainage mechanism 4c comprises an end disc 4c1, a piston 4c2 and a baffle 4c3; the end disc 4c1 is coaxially arranged in the convection duct 4a, and the diameter of the end disc 4c1 is equal to the inner diameter of the convection duct 4 a; the piston 4c2 is coaxially arranged in the convection pipeline 4a, the diameter of the piston 4c2 is equal to that of the end disc 4c1, and the piston 4c2 is fixedly connected to the upper surface of the end disc 4c 1; the baffle plates 4c3 have a plurality of baffle plates 4c3, the number of baffle plates 4c3 is equal to the number of notches at the lower end of the convection duct 4a, the plurality of baffle plates 4c3 are all provided at the lower surface of the end disk 4c1, the plurality of baffle plates 4c3 are uniformly distributed along the circumferential direction of the end disk 4c1, and each baffle plate 4c3 also corresponds to one lower end notch, respectively.
Based on the above embodiment, the technical problem to be solved by the present application is how the bottom drainage mechanism 4c introduces bottom suspension into the convection duct 4 a. For this reason, this application passes through the setting of piston 4c2, and under normal condition, a plurality of baffles 4c3 shield the lower extreme slot of convection current pipeline 4a, and dirty oil can't get into in the convection current pipeline 4a, along with drive arrangement 5 with piston 4c2 upwards, baffle 4c3 has opened the lower extreme slot thereupon, and the bottom suspended solid has been inhaled in convection current pipeline 4a under the mode of vacuum adsorption thereupon.
Further, as shown in fig. 10 and 13:
the driving means 5 comprises a first lifting bar 5a and a first lifter 5b; the first lifting rod 5a is coaxially arranged in the convection pipeline 4a, the diameter of the first lifting rod 5a is smaller than the inner diameter of the convection pipeline 4a, the upper end of the first lifting rod 5a penetrates through the top of the medicine oil mixer 2 to extend outwards, the lower end of the first lifting rod 5a extends to the top of the end disc 4c1 to be fixedly connected with the top of the end disc, the columnar floating plate 4b4 is sleeved on the first lifting rod 5a, the inner diameter of the columnar floating plate 4b4 is larger than the diameter of the first lifting rod 5a, and the piston 4c2 is fixedly sleeved on the first lifting rod 5 a; the first lifter 5b is provided at the top end of the medicine oil mixer 2 and is connected to the first lifter 5 a.
Based on the above embodiment, the technical problem to be solved by the present application is how the driving device 5 drives the movement of the piston 4c 2. For this reason, the first lifting rod 5a is lifted by the first lifter 5b, the first lifting rod 5a drives the piston 4c2 to move upwards along with the lifting of the piston 4c2, the bottom suspended matters are sucked into the convection pipeline 4a along with the upward movement of the piston 4c2, the butt notch of the sleeve 4b1 is opened along with the upward movement of the piston 4c2 until the columnar floating plate 4b4 is lifted, the suspended matters at the upper part enter the convection pipeline 4a along with the upper suspended matters, and the upper suspended matters and the bottom suspended matters are mixed together along with the upper suspended matters to form larger oil flocs.
Further, as shown in fig. 10:
the wall scraping mechanism 6 is used for preventing oil stains from adhering to the inner wall of the convection pipeline 4a and the bottom of the end disc 4c1, and the wall scraping mechanism 6 comprises a rotating rod 6a, a first stirring blade 6b, a second stirring blade 6c and a rotary driver 6d; the rotating rod 6a is coaxially arranged in the convection pipeline 4a, the diameter of the first lifting rod 5a is larger than that of the rotating rod 6a, a socket with the same diameter as that of the rotating rod 6a is formed in the first lifting rod 5a along the axis direction of the first lifting rod 5a, the rotating rod 6a is rotatably inserted in the socket of the first lifting rod 5a, the upper end of the rotating rod 6a is connected with the first lifting rod 5a through a bearing 6a1, and the lower end of the rotating rod 6a extends downwards through the end disc 4c 1; the first stirring blade 6b is provided on the rotating lever 6a between the plurality of baffles 4c3, and the edge of the first stirring blade 6b is in contact with the lower surface of the end disk 4c 1; the second stirring blade 6c is provided on the rotating lever 6a below the first stirring blade 6b, and the edge of the second stirring blade 6c can also be in contact with the inner wall of the convection duct 4 a; the rotary driver 6d is disposed at the top end of the rotary rod 6a, and an output shaft of the rotary driver 6d is fixedly connected with the top end of the rotary rod 6 a.
Based on the above embodiments, the technical problem to be solved by the present application is how to clean the inner wall of the convection tube 4a and the dirty oil at the bottom of the end disk 4c 1. For this reason, this application drives the rotation of bull stick 6a through rotary actuator 6d, and first stirring vane 6b and second stirring vane 6c rotate simultaneously, and first stirring vane 6b scrapes the mud of end dish 4c1 lower surface, and second stirring vane 6c scrapes the dirty oil of convection current pipe 4a inner wall, and bull stick 6a can move along with first lift bar 5a for second stirring vane 6c can carry out comprehensive clearance along the inner wall of convection current pipe 4 a.
Further, as shown in fig. 9 and 10:
the shutter 4b5 has a first bellows 4b51 and a second bellows 4b52; the first corrugated pipe 4b51 is sleeved on the convection pipeline 4a, and two ends of the first corrugated pipe 4b51 are fixedly connected to the upper end of the convection pipeline 4a and the upper end of the sleeve 4b1 respectively; the second corrugated tube 4b52 is sleeved on the convection tube 4a, and two ends of the second corrugated tube 4b52 are fixedly connected to the lower end of the sleeve 4b1 and the lower end of the convection tube 4a respectively.
Based on the above embodiment, when the sleeve 4b1 moves along the convection duct 4a, the strip-shaped openings are shielded by the first bellows 4b51 and the second bellows 4b52, so that the suspended matters can only enter the convection duct 4a through the butt notch of the sleeve 4b1, and a situation that a large amount of water also enters the convection duct 4a and the effect of mixing the suspended matters at the upper part and the suspended matters at the bottom cannot be achieved is avoided.
Further, as shown in fig. 7 and 10:
the device also comprises a positioning mechanism 7 for ensuring that the disc-shaped floating plate 4b2 always floats on the oil surface, wherein the positioning mechanism 7 comprises a magnetic attraction piece 7a and a collision piece 7b; the number of the magnetic attraction pieces 7a is equal to the number of the convex plates 4b11 on the sleeve 4b1, and each magnetic attraction piece 7a is respectively arranged between one convex plate 4b11 and a corresponding step opening; the abutting piece 7b is arranged at the top of the medicine oil mixer 2, and the abutting piece 7b is also positioned in the medicine oil mixer 2.
Based on the above embodiment, when the columnar floating plate 4b4 moves along with the disk-shaped floating plate 4b2, in order to avoid the situation that the columnar floating plate 4b4 opens the butt notch when moving along with the disk-shaped floating plate 4b2, by the arrangement of the magnetic attraction piece 7a, the columnar floating plate 4b4 is attracted onto the convex plate 4b11 of the sleeve 4b1, so that the columnar floating plate 4b4 does not autonomously open the butt notch, when the piston 4c2 moves upwards to lift the columnar floating plate 4b4, the abutting piece 7b positions the columnar floating plate 4b4 at the position according to the position of the disk-shaped floating plate 4b2, the columnar floating plate 4b4 is separated from the sleeve 4b1 along with the butt notch, the butt notch is opened, and the upper suspended matters enter the convection pipeline 4a along with the upper suspended matters, so that the disk-shaped floating plate 4b2 is driven when the columnar floating plate 4b4 is lifted is avoided, the situation that the columnar floating plate 4b2 is always floats on the oil surface is ensured, and the upper suspended matters can be smoothly entered into the convection pipeline 4a through the butt notch of the sleeve 4b 1.
Further, as shown in fig. 13:
the magnet 7a has a first magnet 7a1 and a second magnet 7a2; the first magnet 7a1 is fixed on the convex plate 4b 11; the second magnet 7a2 is fixed in a stepped opening of the columnar floating plate 4b4 corresponding to the first magnet 7a 1.
Based on the above embodiment, the columnar floating plate 4b4 and the convex plate 4b11 of the sleeve 4b1 are attracted together by the first magnet 7a1 and the second magnet 7a 2.
Further, as shown in fig. 14:
the abutting piece 7b has a second lift lever 7b1, a second lifter 7b2, and a photosensor 7b3; one end of the second lifting rod 7b1 extends through the top of the medicine oil mixer 2 to the inside thereof, and the axial direction of the second lifting rod 7b1 is parallel to the axial direction of the convection duct 4 a; the second lifter 7b2 is arranged at the top of the medicine oil mixer 2 and is connected with the second lifter bar 7b 1; the photoelectric sensor 7b3 is disposed at the top of the medicine oil mixer 2 and the output end of the photoelectric sensor 7b3 faces toward the upper surface of the disk-shaped floating plate 4b 2.
Based on the above embodiment, when the abutting piece 7b locates the position of the disc-shaped floating plate 4b2, the second lifter 7b2 drives the second lifting rod 7b1 to move, after the photoelectric sensor 7b3 senses the distance between the second lifter 7b2 and the disc-shaped floating plate 4b2, the second lifter 7b2 then controls the end of the second lifting rod 7b1 to just contact with the disc-shaped floating plate 4b2, when the columnar floating plate 4b4 is lifted up, the disc-shaped floating plate 4b2 will not move along with the floating plate, and the suspended matters on the upper part enter the convection duct 4a smoothly.
A dirty oil treatment process, comprising the steps of:
s1, introducing dirty oil into a medicine oil mixer 2, and floating a disc-shaped floating plate 4b2 on the oil surface;
s2, adding the medicament into a medicament oil mixer 2, and stirring by a stirrer 3, wherein suspended matters in dirty oil are presented;
s3, the driving device 5 drives the bottom drainage mechanism 4c to open a notch at the lower end, and deposited suspended matters enter the convection pipeline 4 a;
s4, as the bottom drainage mechanism 4c moves upwards along the convection pipeline 4a, the upper drainage mechanism 4b opens a strip-shaped opening along with the bottom drainage mechanism, and floating suspended matters enter the convection pipeline 4 a;
s5, the wall scraping mechanism 6 stirs the mixed suspended matters to form oily flocs with relatively high flocculation strength.
The utility model provides a through the effect of upper portion drainage mechanism 4b and bottom drainage mechanism 4c, realized that upper portion is difficult for heavy suspended solid and the bottom is easy to heavy suspended solid's mixture, promoted to form great oily floc, made things convenient for follow-up to separate solid-liquid, improved treatment effeciency.
The foregoing examples merely illustrate one or more embodiments of the invention, which are described in greater detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.

Claims (10)

1. A dirty oil treatment device comprises a bracket (1), a horizontal decanter centrifuge, a sludge drying machine, a disc separation heart machine, a medicine oil mixer (2) and a stirrer (3);
the medicine oil mixer (2) is of a tank-shaped structure, the medicine oil mixer (2) is arranged on the bracket (1), the upper half part of the medicine oil mixer (2) is symmetrically provided with a dirty oil inlet (2 a) and a medicine adding port (2 b), and the bottom center of the medicine oil mixer (2) is also provided with a discharge port (2 c);
the plurality of stirrers (3) are arranged, and the plurality of stirrers (3) are uniformly distributed in the medicine oil mixer (2) along the circumferential direction of the medicine oil mixer (2);
the anti-sedimentation convection device (4) is used for promoting the mixing of the upper dirty oil and the bottom oil sludge, and the anti-sedimentation convection device (4) comprises a convection pipeline (4 a), an upper drainage mechanism (4 b), a bottom drainage mechanism (4 c) and a driving device (5);
the convection pipeline (4 a) is coaxially arranged in the medicine oil mixer (2), the upper end and the lower end of the convection pipeline (4 a) are fixedly connected with the top and the bottom of the medicine oil mixer (2) respectively, a plurality of strip-shaped openings are uniformly formed in the upper half part of the convection pipeline (4 a) along the circumferential direction of the convection pipeline, and a plurality of lower end notches are uniformly formed in the lower half part of the convection pipeline (4 a) along the circumferential direction of the convection pipeline;
the upper drainage mechanism (4 b) is arranged on the convection pipeline (4 a) and is positioned outside the convection pipeline;
the bottom drainage mechanism (4 c) is arranged on the convection pipeline (4 a) and is positioned in the pipe of the convection pipeline, and the bottom drainage mechanism (4 c) is also positioned at the position of the notch at the lower end of the convection pipeline (4 a);
the driving device (5) is arranged on the medicine oil mixer (2) and is positioned in the convection pipeline (4 a), and the driving device (5) is also connected with the bottom drainage mechanism (4 c).
2. A dirty oil treatment apparatus according to claim 1, wherein the upper drainage mechanism (4 b) comprises a sleeve (4 b 1), a disc-shaped float plate (4 b 2), a guide rod (4 b 3), a columnar float plate (4 b 4) and a shutter (4 b 5);
the sleeve (4 b 1) is coaxially sleeved on the convection pipeline (4 a), and a plurality of butt joint notches corresponding to each strip-shaped opening are uniformly formed in the sleeve (4 b 1) along the axis direction of the sleeve;
the disc-shaped floating plate (4 b 2) is coaxially sleeved on the convection pipeline (4 a), and the disc-shaped floating plate (4 b 2) is also fixed at the top end of the sleeve (4 b 1);
the plurality of guide rods (4 b 3) are uniformly distributed along the circumferential direction of the convection pipeline (4 a), two ends of each guide rod (4 b 3) are respectively and fixedly connected to the top end of the convection pipeline (4 a) and the bottom end of the convection pipeline (4 a), the axial direction of each guide rod (4 b 3) is parallel to the axial direction of the convection pipeline (4 a), and the sleeve (4 b 1) and the disc-shaped floating plate (4 b 2) are both sleeved on the plurality of guide rods (4 b 3) in a sliding manner;
the columnar floating plate (4 b 4) is coaxially arranged in the convection pipeline (4 a), the diameter of the columnar floating plate (4 b 4) is equal to the inner diameter of the convection pipeline (4 a), and the columnar floating plate (4 b 4) is correspondingly connected with the sleeve (4 b 1);
the mouth shielding piece (4 b 5) is arranged on the convection pipeline (4 a) and the mouth shielding piece (4 b 5) is also connected with the sleeve (4 b 1).
3. A dirty oil treatment apparatus according to claim 2, wherein a projection (4 b 11) extends from the lower end of the sleeve (4 b 1) through the strip-shaped opening toward the inside of the convection duct (4 a) at each of the abutting notch, and a stepped opening corresponding to each projection (4 b 11) is provided at the lower end of the columnar floating plate (4 b 4).
4. A dirty oil treatment apparatus according to claim 1, wherein the bottom drainage mechanism (4 c) comprises an end disc (4 c 1), a piston (4 c 2) and a baffle (4 c 3);
the end disc (4 c 1) is coaxially arranged in the convection pipeline (4 a), and the diameter of the end disc (4 c 1) is equal to the inner diameter of the convection pipeline (4 a);
the piston (4 c 2) is coaxially arranged in the convection pipeline (4 a), the diameter of the piston (4 c 2) is equal to that of the end disc (4 c 1), and the piston (4 c 2) is fixedly connected to the upper surface of the end disc (4 c 1);
the baffle plates (4 c 3) are multiple, the number of the baffle plates (4 c 3) is equal to the number of notches at the lower end of the convection pipeline (4 a), the baffle plates (4 c 3) are arranged on the lower surface of the end disc (4 c 1), the baffle plates (4 c 3) are uniformly distributed along the circumferential direction of the end disc (4 c 1), and each baffle plate (4 c 3) also corresponds to one notch at the lower end.
5. A dirty oil treatment apparatus according to claim 1, wherein the drive means (5) comprises a first lifting lever (5 a) and a first lifter (5 b);
the first lifting rod (5 a) is coaxially arranged in the convection pipeline (4 a), the diameter of the first lifting rod (5 a) is smaller than the inner diameter of the convection pipeline (4 a), the upper end of the first lifting rod (5 a) penetrates through the top of the medicine oil mixer (2) to extend outwards, the lower end of the first lifting rod (5 a) extends to the top of the end disc (4 c 1) to be fixedly connected with the top of the end disc, the columnar floating plate (4 b 4) is sleeved on the first lifting rod (5 a), the inner diameter of the columnar floating plate (4 b 4) is larger than the diameter of the first lifting rod (5 a), and the piston (4 c 2) is fixedly sleeved on the first lifting rod (5 a);
the first lifter (5 b) is arranged at the top end of the medicine oil mixer (2) and is connected with the first lifting rod (5 a).
6. A dirty oil treatment apparatus according to claim 2, further comprising a scraping mechanism (6) for preventing oil stains from adhering to the inner wall of the convection duct (4 a) and the bottom of the end plate (4 c 1), the scraping mechanism (6) comprising a rotating lever (6 a), a first stirring blade (6 b), a second stirring blade (6 c) and a rotary driver (6 d);
the rotating rod (6 a) is coaxially arranged in the convection pipeline (4 a), the diameter of the first lifting rod (5 a) is larger than that of the rotating rod (6 a), a socket with the same diameter as that of the rotating rod (6 a) is formed in the first lifting rod (5 a) along the axis direction of the first lifting rod (5 a), the rotating rod (6 a) is rotatably inserted into the socket of the first lifting rod (5 a), the upper end of the rotating rod (6 a) is connected with the first lifting rod (5 a) through a bearing (6 a 1), and the lower end of the rotating rod (6 a) penetrates through the end disc (4 c 1) to extend downwards;
the first stirring blades (6 b) are arranged on the rotating rod (6 a) and positioned among the plurality of baffles (4 c 3), and the edges of the first stirring blades (6 b) are contacted with the lower surface of the end disc (4 c 1);
the second stirring blade (6 c) is arranged on the rotating rod (6 a) and is positioned below the first stirring blade (6 b), and the edge of the second stirring blade (6 c) can be contacted with the inner wall of the convection pipeline (4 a);
the rotary driver (6 d) is arranged at the top end of the rotary rod (6 a), and an output shaft of the rotary driver (6 d) is fixedly connected with the top end of the rotary rod (6 a).
7. A dirty oil treatment apparatus according to claim 2, wherein the mouthpiece (4 b 5) has a first bellows (4 b 51) and a second bellows (4 b 52);
the first corrugated pipe (4 b 51) is sleeved on the convection pipeline (4 a), and two ends of the first corrugated pipe (4 b 51) are fixedly connected to the upper end of the convection pipeline (4 a) and the upper end of the sleeve (4 b 1) respectively;
the second corrugated pipe (4 b 52) is sleeved on the convection pipeline (4 a), and two ends of the second corrugated pipe (4 b 52) are fixedly connected to the lower end of the sleeve (4 b 1) and the lower end of the convection pipeline (4 a) respectively.
8. The dirty oil treatment apparatus according to claim 6, further comprising a positioning mechanism (7) for ensuring that the disc-shaped floating plate (4 b 2) always floats on the oil surface, wherein the positioning mechanism (7) comprises a magnetic attraction member (7 a) and an abutting member (7 b);
the number of the magnetic attraction pieces (7 a) is equal to the number of the convex plates (4 b 11) on the sleeve (4 b 1), and each magnetic attraction piece (7 a) is respectively arranged between one convex plate (4 b 11) and a corresponding step opening;
the abutting piece (7 b) is arranged at the top of the medicine oil mixer (2) and the abutting piece (7 b) is also positioned in the medicine oil mixer (2).
9. A dirty oil treatment apparatus according to claim 8, wherein the magnetic attraction member (7 a) has a first magnet (7 a 1) and a second magnet (7 a 2);
the first magnet (7 a 1) is fixed on the convex plate (4 b 11);
the second magnet (7 a 2) is fixed in a step opening of the columnar floating plate (4 b 4) corresponding to the first magnet (7 a 1).
10. A dirty oil treatment process, characterized by being applied to a dirty oil treatment apparatus as claimed in claim 9, comprising the steps of:
s1, introducing dirty oil into a medicine oil mixer (2), and floating a disc-shaped floating plate (4 b 2) on the oil surface;
s2, adding the medicament into a medicament oil mixer (2), and stirring by a stirrer (3), wherein suspended matters in dirty oil are presented;
s3, a driving device (5) drives a bottom drainage mechanism (4 c) to open a notch at the lower end, and deposited suspended matters enter a convection pipeline (4 a);
s4, along with the upward movement of the bottom drainage mechanism (4 c) along the convection pipeline (4 a), the strip-shaped opening is opened by the upper drainage mechanism (4 b), and floating suspended matters enter the convection pipeline (4 a);
s5, stirring the mixed suspended matters by the wall scraping mechanism (6) to form the oily flocs with relatively high flocculation strength.
CN202211102518.7A 2022-09-09 2022-09-09 Dirty oil treatment device and process thereof Active CN116143229B (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3972815A (en) * 1975-01-09 1976-08-03 United States Filter Corporation Mixing apparatus
JP2005193211A (en) * 2004-01-09 2005-07-21 Kuniko Honda Stirring device
CN107793003A (en) * 2017-11-29 2018-03-13 陕西欧菲德环保科技有限公司 A kind of tank bottom oil sludge apparatus for continuous treatment and processing method
CN111099799A (en) * 2020-01-07 2020-05-05 沧州信昌化工股份有限公司 Preprocessing device for dirty oil sludge
CN212068505U (en) * 2019-12-28 2020-12-04 丽水腾信涂料有限公司 Material mixing stirring kettle
CN212370178U (en) * 2020-04-27 2021-01-19 佛山市瑞重机械设备有限公司 Liquid circulation anti-deposition reaction kettle
CN215855425U (en) * 2021-09-08 2022-02-18 王立新 Treatment device for heavy metal sewage

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3972815A (en) * 1975-01-09 1976-08-03 United States Filter Corporation Mixing apparatus
JP2005193211A (en) * 2004-01-09 2005-07-21 Kuniko Honda Stirring device
CN107793003A (en) * 2017-11-29 2018-03-13 陕西欧菲德环保科技有限公司 A kind of tank bottom oil sludge apparatus for continuous treatment and processing method
CN212068505U (en) * 2019-12-28 2020-12-04 丽水腾信涂料有限公司 Material mixing stirring kettle
CN111099799A (en) * 2020-01-07 2020-05-05 沧州信昌化工股份有限公司 Preprocessing device for dirty oil sludge
CN212370178U (en) * 2020-04-27 2021-01-19 佛山市瑞重机械设备有限公司 Liquid circulation anti-deposition reaction kettle
CN215855425U (en) * 2021-09-08 2022-02-18 王立新 Treatment device for heavy metal sewage

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Address after: 061000 North of Bohai West Road, High-tech Zone, Cangzhou City, Hebei Province, east of Xiaoliujin River

Patentee after: Xinchang Technology Co.,Ltd.

Address before: 061000 North of Bohai West Road, High-tech Zone, Cangzhou City, Hebei Province, east of Xiaoliujin River

Patentee before: CANGZHOU XINCHANG CHEMICAL Corp.