CN216457013U - Plate type melting crystallizer - Google Patents

Abstract

The utility model relates to a chemical industry separation technical field especially relates to a plate-type melting crystallizer, has solved the problem that lacks the plate-type melting crystallizer of an integral type equipment among the prior art. The utility model provides a board-like melting crystallizer, advances pipe and material feed liquor pipe including the conduction oil, still includes the main cavity body, the inside equidistance of the main cavity body is provided with a plurality of heat transfer boards to form a plurality of crystallization chamber, material feed liquor pipe communicates with a plurality of crystallization chamber respectively, the inside hollow structure that is of heat transfer board, the outer wall of heat transfer board is provided with a plurality of domes. The utility model discloses a material accomplishes even crystallization, sweating and melting stage in the internal crystallization intracavity that corresponds of main cavity, has realized the board-like melting crystallizer of an organic whole, and this crystallizer is compared with current board-like crystallizer, and not only area is little, and heat transfer board and material direct contact are more even moreover, and the route that the material flows is less to make the component that does not crystallize in the material run off for a short time, more have practical meaning.

Description

Plate type melting crystallizer

Technical Field

The utility model relates to a chemical industry separation technical field especially relates to a plate-type melting crystallizer.

Background

The melt crystallization is a novel chemical separation technology, and is widely applied to the refining and purification of chemical intermediates, medical intermediates and biochemical products. The method mainly comprises two different processes: suspension crystallization method and layer crystallization. Plate-type melt crystallization is one of the layer-type static melt crystallization.

The industrial crystallization separation can be divided into four modes of solution crystallization, melt crystallization, sublimation crystallization and precipitation crystallization, wherein the melt crystallization has the characteristics of high efficiency, low energy consumption, low pollution and the like, and high-purity products can be separated. The principle of melt crystallization is realized by gradually lowering the temperature of an initial liquid mixture to achieve partial crystallization according to the difference of freezing points among substances to be separated, and the crystallized solid phase is different from the chemical composition of residual liquid, so that the separation and purification purposes are achieved. The purity of the product subjected to melt crystallization can reach 99.9-99.99%, so that the requirement of medical products, food additives, spices, biochemical products or reagent products on high purity can be met.

The existing melt crystallization can be divided into three modes of layer crystallization, suspension crystallization and zone scouring crystallization; layer crystallization is the gradual precipitation of a crystalline layer from a static or stagnant film of melt on a cooling surface; suspension crystallization is to rapidly crystallize out crystal particles from a molten mass in a container with stirring, the particles are suspended in the molten mass, and a product is produced through centrifugal separation; the existing melting crystallization process is composed of three steps, namely crystallization, sweating and melting;

however, the three processes are required to be finished respectively, so that the crystallization process is long, the operation points are multiple, the operation is more difficult to control, the equipment investment is large, the occupied area is large, and the biggest difference between the discontinuous crystallization production and the continuous crystallization production is that the shape of the produced crystal grains is poor and the diameter of the crystal grains is small; therefore, a plate-type melt crystallizer has been proposed to solve the above problems by providing an apparatus integrating three steps of crystallization, sweating, and melting into one body.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a plate-type melting crystallizer has solved the problem that lacks the plate-type melting crystallizer of an integral type equipment among the prior art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a plate type melting crystallizer comprises a heat conduction oil inlet pipe, a material inlet pipe and a main cavity body, wherein a plurality of heat exchange plates are arranged in the main cavity body at equal intervals to form a plurality of crystallization cavities, the material inlet pipe is respectively communicated with the crystallization cavities, the inner parts of the heat exchange plates are of hollow structures, a plurality of spherical bulges are arranged on the outer walls of the heat exchange plates, a first baffle plate is arranged in each heat exchange plate, the heat conduction oil inlet pipe is respectively communicated with the corresponding heat exchange plate, a collecting pipe is arranged at the bottom end of the main cavity body, conveying pipes communicated with the corresponding crystallization cavities are arranged at the top end of each collecting pipe, a valve is respectively arranged on each conveying pipe, the bottom end of each collecting pipe is communicated with the feed end of a spiral discharging pipe, a crystallization mother liquid tank is communicated with the lower part of the feed end of the spiral discharging pipe through a filter screen, and the output end of the spiral discharging pipe is connected with a crystal outlet, and a heat conduction oil outlet pipe is arranged below the main cavity, and the bottom ends of the heat exchange plates are respectively communicated with the heat conduction oil outlet pipe.

Preferably, one side of the main cavity is provided with a temperature lifter, the heat conduction oil outlet pipe is communicated with the inlet end of the temperature lifter, and the outlet end of the temperature lifter is communicated with the heat conduction oil inlet pipe.

Preferably, one side of the main cavity body is provided with an electric control cabinet, and a temperature measuring meter is respectively arranged on the main cavity body corresponding to each crystallization cavity.

Preferably, the outer wall cover of main cavity body is equipped with the cover that presss from both sides, the inside of pressing from both sides the cover is provided with the heat preservation chamber of loop configuration, heat preservation chamber outsourcing is equipped with the heat preservation cotton, the conduction oil advances the pipe and passes through branch pipe and heat preservation chamber top intercommunication, the conduction oil exit tube passes through branch pipe and heat preservation chamber bottom intercommunication.

Preferably, a second baffle plate which is distributed spirally is arranged in the heat preservation cavity to drive the heat conduction oil to spirally flow from top to bottom in the heat preservation cavity.

Preferably, install the baffle in the heat transfer board to make the heat transfer board divide into two chambeies, first baffler is provided with a plurality ofly in every intracavity, and a plurality of first baffler crisscross settings to the drive conduction oil is continuous Z type flow in the intracavity that corresponds.

The utility model discloses possess following beneficial effect at least:

even crystallization, sweating and melting stage are accomplished to the crystallization intracavity that corresponds in the main cavity through the material, have realized the board-like melting crystallizer of an organic whole, and this crystallizer compares with current board-like crystallizer, and not only area is little, and heat transfer board and material direct contact are more even moreover, and the route that the material flows is less to make the component that does not crystallize in the material run off for a short time, more have practical meaning.

The utility model discloses still possess following beneficial effect:

1. the second baffle plate is arranged, so that the flowing uniformity of heat conduction oil in the heat insulation cavity is improved, the utilization rate of the heat conduction oil is improved, the temperature of the heat conduction oil in the heat insulation cavity is consistent with that of the heat conduction oil in the heat exchange plate, and the inside and outside dual control of the crystallization cavity can be well performed.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without any creative effort.

FIG. 1 is a schematic front view of an integrated plate-type melt crystallizer;

FIG. 2 is a schematic view of the internal structure of an integrated plate-type melt crystallizer;

FIG. 3 is a schematic cross-sectional view of a heat exchange plate;

fig. 4 is a schematic cross-sectional view of a holding chamber.

In the figure: 1. a main chamber; 2. a jacket; 3. a material liquid inlet pipe; 4. a heat conducting oil inlet pipe; 5. a temperature riser; 6. a heat conducting oil outlet pipe; 7. a header; 8. a spiral discharging pipe; 9. a crystallization mother liquor tank; 10. a crystal outlet; 11. a crystallization cavity; 12. a heat exchange plate; 13. spherical convex; 14. a heat preservation cavity; 15. heat preservation cotton; 16. a partition plate; 17. a first baffle plate; 18. and the second baffle plate.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1-4, a plate type melt crystallizer comprises a heat conducting oil inlet pipe 4, a material inlet pipe 3, a main cavity 1, a plurality of heat exchange plates 12 equidistantly arranged inside the main cavity 1 to form a plurality of crystallization cavities 11, the material inlet pipe 3 is respectively communicated with the crystallization cavities 11, the heat exchange plates 12 are hollow, a plurality of spherical protrusions 13 are arranged on the outer walls of the heat exchange plates 12, first baffle plates 17 are arranged inside the heat exchange plates 12, the heat conducting oil inlet pipe 4 is respectively communicated with the corresponding heat exchange plates 12, a collecting pipe 7 is arranged at the bottom end of the main cavity 1, conveying pipes communicated with the corresponding crystallization cavities 11 are arranged at the top end of the collecting pipe 7, valves are respectively arranged on each conveying pipe, the bottom end of the collecting pipe 7 is communicated with the feed end of a spiral discharging pipe 8, a crystallization mother liquid tank 9 is communicated with the lower part of the feed end of the spiral discharging pipe 8 through a filter screen, the output end of the spiral discharging pipe 8 is connected with a crystal outlet 10, a heat conduction oil outlet pipe 6 is arranged below the main cavity 1, and the bottom ends of the plurality of heat exchange plates 12 are respectively communicated with the heat conduction oil outlet pipe 6;

the scheme has the following working processes: the crystallization materials are guided into the corresponding crystallization cavities 11, the heat conduction oil is input into the corresponding heat exchange plates 12 through the heat conduction oil inlet pipes 4 and flows to the heat conduction oil outlet pipes 6 from top to bottom in an attaching mode with the inner walls of the heat exchange plates 12 under the action of the corresponding first baffle plates 17, the heat conduction oil outlet pipes 6 are circulated to the heat conduction oil inlet pipes 4 after being discharged through temperature treatment, the spherical protrusions 13 of the heat exchange plates 12 improve the contact area of the materials and the heat exchange plates 12 and are convenient for separation of crystals, the crystallization materials utilize the temperature of the heat conduction oil in the corresponding crystallization cavities 11, firstly, temperature reduction and crystallization are carried out, after the crystallization temperature is reached, a period of time is waited, crystallization of the materials is completed, when the crystallization temperature is slightly reduced, the heat conduction oil stops cooling work, the heat conduction oil starts constant-temperature heat preservation work, and sweating and purification of the crystals are carried out; then, heating the heat conduction oil to enable the temperature of the heat exchange plate 12 to be increased to be higher than the crystallization temperature, and then performing a crystalline substance melting and separating stage; then, a valve of the collecting pipe 7 is opened, so that the crystallization mother liquor and the crystals in the crystallization cavity 11 fall into the spiral discharging pipe 8, and new crystallization materials can be added into the mother liquor in the crystallization mother liquor tank 9 for carrying out crystallization treatment again; the crystals are discharged from the outlet under the action of the spiral discharging pipe 8; spiral blowing pipe 8 slope sets up to avoid crystallization mother liquor to carry along with spiral blowing pipe 8, thereby realized the board-like melting crystallizer of an organic whole, this crystallizer compares with current board-like crystallizer, and not only area is little, and heat transfer board 12 is more even with material direct contact moreover, and the route that the material flows is less, so that the component that does not crystallize in the material runs off for a short time, more has practical meaning.

Further, one side of main cavity 1 is provided with temperature lift 5, and the conduction oil exit tube 6 feeds through with advancing of temperature lift 5, and the play end and the conduction oil of temperature lift 5 advance tub 4 intercommunication, and is specific, and temperature lift 5 is used for cooling down the conduction oil or the processing that heaies up, is convenient for control material crystallization.

Further, one side of the main cavity body 1 is provided with automatically controlled cabinet, and the temperature measurement meter is installed respectively to every crystallization chamber 11 on the main cavity body 1, and is specific, and the temperature measurement meter is connected with automatically controlled cabinet, has to be convenient for carry out accurate crystallization control to it according to the temperature in the crystallization chamber 11.

Further, the outer wall cover of the main cavity body 1 is equipped with and presss from both sides cover 2, the inside of pressing from both sides cover 2 is provided with the heat preservation chamber 14 of loop configuration, heat preservation chamber 14 outsourcing is equipped with heat preservation cotton 15, the conduction oil advances pipe 4 and passes through branch pipe and the 14 top intercommunication in heat preservation chamber, conduction oil exit tube 6 passes through branch pipe and the 14 bottom intercommunication in heat preservation chamber, and is concrete, the setting of the heat preservation chamber 14 in the cover 2 of pressing from both sides, the heat preservation effect to the temperature in the main cavity body 1 has been improved, reduce the temperature loss in the main cavity body 1, and then can improve the accuracy of material crystallization.

Further, be provided with the second baffling board 18 that is the heliciform and distributes in the heat preservation chamber 14 to drive the conduction oil from top to bottom heliciform and flow in the heat preservation chamber 14, specific, the setting of second baffling board 18 has improved the homogeneity that the conduction oil flows in the heat preservation chamber 14, has improved the utilization ratio of conduction oil, and the conduction oil in the heat preservation chamber 14 is unanimous with the conduction oil temperature in the heat transfer plate 12, can be fine carry out inside and outside dual control to the crystallization chamber 11.

Further, install baffle 16 in heat transfer board 12 to make heat transfer board 12 divide into two chambeies, first baffle 17 is provided with a plurality ofly in every intracavity, and a plurality of first baffle 17 crisscross settings, is continuous Z type flow in the intracavity that corresponds with the drive conduction oil, and is concrete, is provided with two chambeies in every heat transfer board 12, has improved the heat exchange efficiency of conduction oil in heat transfer board 12, and the homogeneity of heat transfer board 12 has been improved in the setting of first baffle 17.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the principles of the present invention may be applied to any other embodiment without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (6)

1. A plate type melting crystallizer comprises a heat conduction oil inlet pipe (4) and a material inlet pipe (3), and is characterized by further comprising a main cavity body (1), wherein a plurality of heat exchange plates (12) are arranged in the main cavity body (1) at equal intervals to form a plurality of crystallization cavities (11), the material inlet pipe (3) is communicated with the crystallization cavities (11) respectively, the heat exchange plates (12) are hollow, a plurality of spherical protrusions (13) are arranged on the outer wall of each heat exchange plate (12), a first baffle plate (17) is arranged in each heat exchange plate (12), the heat conduction oil inlet pipe (4) is communicated with the corresponding heat exchange plates (12) respectively, a header pipe (7) is installed at the bottom end of the main cavity body (1), conveying pipes communicated with the corresponding crystallization cavities (11) are installed at the top end of the header pipe (7), and valves are installed on each conveying pipe respectively, the bottom of the collecting pipe (7) is communicated with the feeding end of the spiral discharging pipe (8), the lower portion of the feeding end of the spiral discharging pipe (8) is communicated with a crystallization mother liquid tank (9) through a filter screen, the output end of the spiral discharging pipe (8) is connected with a crystal outlet (10), a heat conduction oil outlet pipe (6) is arranged below the main cavity (1), and the bottom ends of the heat exchange plates (12) are communicated with the heat conduction oil outlet pipe (6) respectively.

2. A plate type melt crystallizer according to claim 1, characterized in that a temperature lifter (5) is arranged at one side of the main cavity (1), the heat transfer oil outlet pipe (6) is communicated with the inlet end of the temperature lifter (5), and the outlet end of the temperature lifter (5) is communicated with the heat transfer oil inlet pipe (4).

3. A plate crystallizer as in claim 1, characterized in that said main chamber (1) is provided on one side with an electric control cabinet and in that said main chamber (1) is equipped with a respective temperature gauge for each crystallization chamber (11).

4. The plate type melt crystallizer according to claim 1, wherein the outer wall of the main cavity (1) is sleeved with a jacket (2), a heat preservation cavity (14) with an annular structure is arranged inside the jacket (2), heat preservation cotton (15) is wrapped outside the heat preservation cavity (14), the heat conduction oil inlet pipe (4) is communicated with the top end of the heat preservation cavity (14) through a branch pipe, and the heat conduction oil outlet pipe (6) is communicated with the bottom end of the heat preservation cavity (14) through a branch pipe.

5. A plate-type melt crystallizer according to claim 4, characterized in that a second baffle plate (18) is disposed in the heat-retaining chamber (14) and is spirally distributed to drive the heat-conducting oil to spirally flow from top to bottom in the heat-retaining chamber (14).

6. A plate-type melt crystallizer as claimed in claim 1, characterized in that said heat exchange plates (12) are internally equipped with partitions (16) to divide the heat exchange plates (12) into two chambers, said first baffle plates (17) being provided in plurality in each chamber, and a plurality of first baffle plates (17) being staggered to drive the heat conduction oil in a continuous Z-shaped flow in the corresponding chamber.

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