CN218810524U

CN218810524U - Desulfurizing liquid evaporation device

Info

Publication number: CN218810524U
Application number: CN202222139908.3U
Authority: CN
Inventors: 张健
Original assignee: Xintai Zhongtai New Material Technology Co ltd
Current assignee: Xintai Zhongtai New Material Technology Co ltd
Priority date: 2022-08-15
Filing date: 2022-08-15
Publication date: 2023-04-07
Anticipated expiration: 2032-08-15

Abstract

The utility model belongs to the chemical industry field, concretely relates to doctor solution evaporation plant, set up the evaporation kettle, the sprayer, the cooler, the thick liquid pump, the plate and frame filter press and the jet pump, when doctor solution handles, carry out the filter-pressing to doctor solution through the plate and frame filter press, go out the gypsum in the doctor solution, particle impurity filter-pressing is got rid of, liquid input evaporation kettle after the clearance, evaporate to certain concentration after the cooling, liquid after the cooling passes through the thick liquid pump and inputs the plate and frame filter press and carries out filter-pressing once more, remove remaining granule material in the liquid, liquid after the filter-pressing can recycle; meanwhile, the evaporated desulfurization liquid gas is transmitted to the ejector through a steam pipe, water is transmitted into the ejector through an ejector pump, the water and the vapor are mixed and then are input into a cooler, and the desulfurization liquid generated under the condensation of the cooler is recycled into a desulfurization liquid pool for secondary treatment; the desulfurization solution is treated by steps, so that the treatment effect of the desulfurization solution is improved, and the problem that the desulfurization solution is difficult to clean thoroughly is solved.

Description

Desulfurizing liquid evaporation device

Technical Field

The utility model relates to a chemical industry field, concretely relates to doctor solution evaporation plant.

Background

Phthalic anhydride generally refers to phthalic anhydride. Phthalic anhydride, an organic compound of formula C ₈ H ₄ O ₃ The phthalic acid is cyclic anhydride formed by the intramolecular dehydration of phthalic acid, is white crystalline powder, is insoluble in cold water, is slightly soluble in hot water and ether, is soluble in ethanol, pyridine, benzene, carbon disulfide and the like, and is an important organic chemical raw material.

The prior art has the following problems:

after the tail gas produced by the phthalic anhydride device is incinerated, washed and desulfurized, the desulfurization solution is difficult to thoroughly clean because of containing a small amount of byproducts and impurities, and the desulfurization solution always troubles the production of phthalic anhydride.

SUMMERY OF THE UTILITY MODEL

Objects of the invention

For solving the technical problem who exists among the background art, the utility model provides a doctor solution evaporation plant has doctor solution and handles thorough and handle liquid cyclic utilization's characteristics.

(II) technical scheme

In order to solve the technical problem, the utility model provides a desulfurizing liquid evaporation device, which comprises an evaporation kettle, an ejector, a cooler, a slurry pump, a plate-and-frame filter press and an injection pump which are connected by pipelines;

a liquid inlet pipe and a steam pipe are installed at the top of the evaporation kettle, and a liquid outlet pipe is installed at the bottom of the evaporation kettle;

the evaporator is provided with a stirrer, the stirrer comprises a driving device arranged at the top of the evaporator, the output end of the driving device is connected with a rotating shaft penetrating into the inner cavity of the evaporator, and the outer wall of the rotating shaft is sleeved with a stirring paddle group;

the outside of evaporating kettle is provided with heating mechanism, and heating mechanism establishes including the cover the bush of evaporating kettle outer wall, the internally mounted of bush coils the heating coil of evaporating kettle periphery.

Preferably, a plurality of blades are arranged on the stirring paddle group, and communicated micropores are formed in the blades.

Preferably, the heating coil is of a "helical" configuration.

Preferably, the other end of the liquid inlet pipe is connected to an external desulfurization liquid pool.

Preferably, the other end of the steam pipe is connected to the ejector, and passages on the ejector are connected to the cooler and the jet pump, respectively.

Preferably, the other end of the liquid outlet pipe is connected to the slurry pump, and the liquid outlet end of the slurry pump is connected to the plate-and-frame filter press.

The above technical scheme of the utility model following profitable technological effect has: the desulfurization method comprises the following steps of arranging an evaporation kettle, an ejector, a cooler, a slurry pump, a plate-and-frame filter press and an injection pump, carrying out filter pressing on desulfurization liquid through the plate-and-frame filter press when the desulfurization liquid is treated, carrying out filter pressing on gypsum and particle impurities in the desulfurization liquid to remove, inputting the cleaned liquid into the evaporation kettle, cooling after evaporating to a certain concentration, inputting the cooled liquid into the plate-and-frame filter press through the slurry pump to carry out filter pressing again, removing residual particle materials in the liquid, and recycling the liquid after filter pressing; meanwhile, the evaporated desulfurization liquid gas is transmitted to the ejector through a steam pipe, water is transmitted into the ejector through an ejector pump, the water and the vapor are mixed and then are input into a cooler, and the desulfurization liquid generated by condensation of the cooler is recycled into a desulfurization liquid tank for secondary treatment; the desulfurization solution is treated in steps, so that the treatment effect of the desulfurization solution is improved, and the problem that the desulfurization solution is difficult to clean thoroughly is solved.

Drawings

FIG. 1 is a schematic view of the structure of an evaporation kettle of the present invention;

FIG. 2 is a schematic view of the cross-sectional structure of the evaporation kettle of the present invention;

FIG. 3 is a flow chart of the desulfurization evaporation process of the present invention.

Reference numerals:

1. evaporating the kettle; 11. a foot rest; 12. a liquid inlet pipe; 13. a steam pipe; 14. a liquid outlet pipe; 2. a stirrer; 21. a drive device; 22. a rotating shaft; 23. a stirring paddle group; 31. a bushing; 32. a heating coil; 4. an ejector; 5. a cooler; 6. a slurry pump; 7. a plate-and-frame filter press; 8. and (4) a jet pump.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

As shown in fig. 1-3, the desulfurization solution evaporation device provided by the present invention comprises an evaporation kettle 1, an injector 4, a cooler 5, a slurry pump 6, a plate-and-frame filter press 7 and an injection pump 8 which are connected by a pipeline;

a liquid inlet pipe 12 and a steam pipe 13 are arranged at the top of the evaporation kettle 1, and a liquid outlet pipe 14 is arranged at the bottom of the evaporation kettle;

the evaporation kettle 1 is provided with a stirrer 2, the stirrer 2 comprises a driving device 21 arranged at the top of the evaporation kettle 1, the output end of the driving device 21 is connected with a rotating shaft 22 penetrating into the inner cavity of the evaporation kettle 1, and the outer wall of the rotating shaft 22 is sleeved with a stirring paddle group 23;

the outside of reation kettle 1 is provided with heating mechanism, and heating mechanism establishes the bush 31 at reation kettle 1 outer wall including the cover, and the internally mounted of bush 31 has the heating coil 32 of coiling in reation kettle 1 periphery.

It should be noted that:

1. the other end of the liquid inlet pipe 12 is connected to an external desulfurization liquid pool.

2. The other end of the steam pipe 13 is connected to the ejector 4, and passages on the ejector 4 are connected to the cooler 5 and the jet pump 8, respectively.

3. The other end of the liquid outlet pipe 14 is connected to the slurry pump 6, and the liquid outlet end of the slurry pump 6 is connected to the plate-and-frame filter press 7.

In the embodiment, an evaporation kettle 1, an ejector 4, a cooler 5, a slurry pump 6, a plate-and-frame filter press 7 and an injection pump 8 are arranged, when the desulfurization solution is treated, the desulfurization solution is subjected to filter pressing through the plate-and-frame filter press 7, gypsum and particle impurities in the desulfurization solution are removed by filter pressing, the cleaned liquid is input into the evaporation kettle 1, is cooled after being evaporated to a certain concentration, and is input into the plate-and-frame filter press 7 through the slurry pump to be subjected to filter pressing again, so that residual particle materials in the liquid are removed, and the liquid after filter pressing can be recycled;

meanwhile, the evaporated desulfurization solution gas is transmitted to the ejector 4 through a steam pipe 13, water is transmitted into the ejector 4 through an ejector pump 8, the water and the vapor are mixed and then are input into a cooler 5, and the desulfurization solution generated under the condensation of the cooler 8 is recycled into a desulfurization solution pool for secondary treatment;

the desulfurization solution is treated in steps, so that the treatment effect of the desulfurization solution is improved, and the problem that the desulfurization solution is difficult to clean thoroughly is solved.

As a working example of the vaporization tank 1, as shown in fig. 2: pretreated desulfurization liquid is input into an evaporation kettle 1 through a liquid inlet pipe 12, a stirrer 2 and a heating mechanism work synchronously, a driving device 21 drives a rotating shaft 22 connected with an output end to rotate, a stirring paddle group 23 is driven to stir the desulfurization liquid, at the moment, a heating coil 32 in a lining 31 starts to heat, the temperature in the evaporation kettle 1 rises under the action of heat conduction, the desulfurization liquid starts to be heated and decomposed to generate steam, after a period of treatment, the stirrer 2 and the heating mechanism are closed, cooling of the desulfurization liquid in the kettle is waited, and in the working process, steam and the treated desulfurization liquid are respectively conveyed to a next procedure by a steam pipe 13 and a liquid outlet pipe 14 to be treated again.

In order to improve the stirring performance: further, the method comprises the following steps: be provided with a plurality of blade (blade is six in this application) on the stirring rake group 23, set up the micropore that link up on the blade, set up the permeable micropore transmission doctor solution of micropore blade, reduce blade rotation resistance, and promote blade and doctor solution contact effect.

In order to facilitate heating of the kettle, the heating coil 32 is further in a "spiral" configuration.

It should be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundary of the appended claims, or the equivalents of such scope and boundary.

Claims

1. A desulfurization liquid evaporation device is characterized by comprising an evaporation kettle (1), an ejector (4), a cooler (5), a slurry pump (6), a plate-and-frame filter press (7) and an injection pump (8) which are connected through pipelines;

a liquid inlet pipe (12) and a steam pipe (13) are installed at the top of the evaporation kettle (1), and a liquid outlet pipe (14) is installed at the bottom of the evaporation kettle;

the evaporation kettle (1) is provided with a stirrer (2), the stirrer (2) comprises a driving device (21) arranged at the top of the evaporation kettle (1), the output end of the driving device (21) is connected with a rotating shaft (22) penetrating into the inner cavity of the evaporation kettle (1), and the outer wall of the rotating shaft (22) is sleeved with a stirring paddle group (23);

the outside of reation kettle (1) is provided with heating mechanism, and heating mechanism establishes including the cover bushing (31) of reation kettle (1) outer wall, the internally mounted of bushing (31) has the coiling and is in heating coil (32) of reation kettle (1) periphery.

2. The doctor solution evaporation device according to claim 1, wherein the stirring paddle set (23) is provided with a plurality of blades, and the blades are provided with through micropores.

3. A doctor solution evaporator device according to claim 1, characterised in that the heating coil (32) is of "helical" construction.

4. A desulfurization solution evaporation apparatus according to claim 1, wherein the other end of said inlet pipe (12) is connected to an external desulfurization solution tank.

5. An evaporation apparatus for desulfurization solution according to claim 1, characterized in that the other end of said steam pipe (13) is connected to said ejector (4), and the passages of said ejector (4) are connected to said cooler (5) and said jet pump (8), respectively.

6. A doctor solution evaporation device according to claim 1, characterized in that the other end of the outlet pipe (14) is connected to the slurry pump (6), and the outlet end of the slurry pump (6) is connected to the plate and frame filter press (7).