CN210944909U - Cyclohexanone oxime effluent treatment plant - Google Patents
Cyclohexanone oxime effluent treatment plant Download PDFInfo
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Abstract
The utility model discloses a cyclohexanone oxime wastewater treatment device, which mainly comprises a wastewater evaporation tower, a wastewater evaporation circulating pump, a wastewater evaporation heater, a wastewater vapor condenser, a wastewater vapor condensate tank and a wastewater vapor condensate pump;the waste water evaporation tower is a packed tower and is provided with a waste water inlet pipe of the waste water evaporation tower, a waste water steam outlet pipe of the waste water evaporation tower, a circulating liquid outlet pipe of the waste water evaporation tower, a waste water steam inlet pipe of the waste water evaporation tower and a waste water recovery pipe of a waste water evaporation heater; the flow rate of the wastewater evaporation circulating pump is 250-300m3(ii) a The heat exchange area of the wastewater evaporation heater is 2200-2(ii) a The heat exchange area of the wastewater steam condenser is 1600-2000m2(ii) a The waste water vapor condensate tank is a vertical tank with the volume of 8-12m3(ii) a The flow of the wastewater vapor condensate pump is 30-45m3. The utility model discloses a cyclohexanone oxime waste water realizes resource utilization.
Description
The technical field is as follows:
the invention relates to the field of wastewater treatment, in particular to a cyclohexanone oxime wastewater treatment device.
Background art:
the cyclohexanone oxime is used for preparing caprolactam, the caprolactam is used for producing polyamide slices (usually called nylon-6 slices or nylon-6 slices), and the slices can be further processed into nylon fibers, engineering plastics and plastic films. Caprolactam is a national encouragementThe new chemical material that is expanded, cyclohexanone oxime is the main raw materials for producing caprolactam, cyclohexanone oxime uses cyclohexanone, hydrogen peroxide, ammonia as raw materials, in the course of producing cyclohexanone oxime, the raw materials hydrogen peroxide concentration that participates in the reaction is 27.5%, the main questions existing are: 27.5% hydrogen peroxide contains 72.5% water, and water is also formed during the reaction
Cyclohexanone oxime produces a large amount of waste water in the separation process. At present, the state continuously advocates energy conservation and emission reduction, how to realize resource utilization of the part of wastewater is a difficult problem in the field, and in order to respond to the national call for energy conservation and emission reduction, a cyclohexanone oxime wastewater treatment device is urgently needed to be developed to realize the emission reduction and resource utilization of the wastewater.
The utility model has the following contents:
the prior art treatment mode of cyclohexanone oxime wastewater is as follows: the wastewater is discharged after being stripped by a wastewater stripping tower, the utility model overcomes the defects of the prior art, and the main pollutant components of the wastewater are a small amount of toluene, cyclohexanone oxime and tert-butyl alcohol after the cyclohexanone oxime wastewater is analyzed; in order to realize the reduction and resource utilization of cyclohexanone-oxime wastewater, a pilot test is firstly carried out: the research shows that the production process of the water washing separation system in the caprolactam production process is characterized in that the water washing separation system is used for washing inorganic ions in the cyclohexanone-oxime aqueous solution, the used water is desalted water, and the main component of the cyclohexanone-oxime aqueous solution after water washing is cyclohexanone-oxime; analyzing the cyclohexanone oxime wastewater evaporation condensate, wherein the main pollutant component of the evaporation condensate is a small amount of toluene; the cyclohexanone oxime waste water evaporation condensate is adopted to replace desalted water to wash the oxime aqueous solution, the components of the washed oxime aqueous solution are cyclohexanone oxime, water and a small amount of toluene, compared with the components of the oxime aqueous solution washed by desalted water, a small amount of toluene is introduced, and the subsequent oxime aqueous solution needs to be added with toluene as an extracting agent for further treatment, so that the system is not influenced; carrying out post-process experiments on the material washed by the cyclohexanone-oxime evaporation condensate, and finding that the quality of a caprolactam product which is a final product is not influenced; and a pilot test is carried out according to pilot test data, and industrialization is carried out according to pilot test results. The utility model provides a cyclohexanone oxime effluent treatment plant realizes cyclohexanone oxime waste water resource utilization.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a cyclohexanone oxime effluent treatment plant mainly includes: the system comprises a wastewater evaporation tower, a wastewater evaporation circulating pump, a wastewater evaporation heater, a wastewater steam condenser, a wastewater steam condensate tank and a wastewater steam condensate pump.
The waste water evaporation tower is a packed tower, and a layer of regular packing is arranged in the waste water evaporation tower, and the specification is phi 3000 × 1000 mm-phi 3700 × 1000 mm.
Furthermore, a wastewater inlet pipe of the wastewater evaporation tower is arranged in the middle of the wastewater evaporation tower, and the specification of the wastewater inlet pipe of the wastewater evaporation tower is DN 125.
Furthermore, the waste water inlet pipe of the waste water evaporation tower is an inward extending distribution pipe which is arranged in the middle of the tower, small holes with the diameter of 20 mm are formed in the lower half part of the inward extending distribution pipe every 50mm, and the small holes and the central line of the waste water inlet pipe of the waste water evaporation tower are distributed at intervals of 60 degrees.
Furthermore, the regular packing is corrugated packing and is positioned at the upper part of the waste water inlet pipe of the waste water evaporation tower, and the distance between the lowest layer of the corrugated packing and the central line of the waste water inlet pipe of the waste water evaporation tower in the vertical direction is 1400 mm.
Furthermore, a waste water steam outlet pipe of the waste water evaporation tower is arranged at the upper part of the waste water evaporation tower, and the distance between the central line of the waste water steam outlet pipe of the waste water evaporation tower and the central line of a waste water inlet pipe of the waste water evaporation tower is 3900 mm.
Furthermore, the specification of the waste water steam outlet pipe of the waste water evaporation tower is DN 1400.
Furthermore, a circulating liquid outlet pipe of the waste water evaporation tower is arranged at the lower part of the waste water evaporation tower, and the distance between the center line of the circulating liquid outlet pipe of the waste water evaporation tower and the center line of the waste water inlet pipe of the waste water evaporation tower in the vertical direction is 5565 mm.
Furthermore, the specification of the circulating liquid outlet pipe of the wastewater evaporation tower is DN 200.
Furthermore, a waste water steam inlet pipe of the waste water evaporation tower is arranged at the upper part of the circulating liquid outlet pipe of the waste water evaporation tower, and the distance between the central line of the waste water steam inlet pipe of the waste water evaporation tower and the central line of the waste water inlet pipe of the waste water evaporation tower in the vertical direction is 2900 mm.
Furthermore, a wastewater recovery pipe of the wastewater evaporation heater is arranged at the upper part of the circulating liquid outlet pipe of the wastewater evaporation tower, and the distance between the center line of the wastewater recovery pipe of the wastewater evaporation heater and the center line of the wastewater inlet pipe of the wastewater evaporation tower in the vertical direction is 3900 mm.
The waste water evaporation circulating pump is in the form of a shielding pump, and the flow rate is 250-300m3。
Furthermore, the specification of the inlet pipe of the wastewater evaporation circulating pump is DN250, and the inlet pipe of the wastewater evaporation circulating pump is connected with the circulating liquid outlet pipe of the wastewater evaporation tower.
Furthermore, the specification of the outlet pipe of the wastewater evaporation circulating pump is DN250, and the outlet pipe of the wastewater evaporation circulating pump is connected with the wastewater inlet pipe of the wastewater evaporation heater.
Furthermore, a waste water concentrated solution conveying pipeline is arranged on an outlet pipeline of the waste water evaporation circulating pump, and the evaporated waste water concentrated solution is conveyed to a waste water concentrated solution treatment system.
The waste water evaporation heater is in the form of a falling film vertical heat exchanger, the material of a tube pass is S30408, the material of a shell pass is Q345R, and the heat exchange area is 2200-2(ii) a The waste water is heated into steam in the tube pass, and the heating steam is introduced into the shell layer.
Furthermore, a waste water evaporation heater steam outlet pipe is arranged at the lower part of the waste water evaporation heater tube side, and the specification of the waste water evaporation heater steam outlet pipe is DN 1400.
Furthermore, the steam outlet pipe of the wastewater evaporation heater is connected with the wastewater steam inlet pipe of the wastewater evaporation tower.
Furthermore, a waste water inlet pipe of the waste water evaporation heater is arranged at the upper part of the tube pass of the waste water evaporation heater, and the specification of the waste water inlet pipe of the waste water evaporation heater is DN 300.
Furthermore, a waste water inlet pipe of the waste water evaporation heater is connected with an outlet pipe of the waste water evaporation circulating pump.
Further, the heating medium of the waste water evaporation heater is steam.
Furthermore, a wastewater discharge pipe of the wastewater evaporation heater is arranged at the bottom of the wastewater evaporation heater, and the specification of the wastewater discharge pipe of the wastewater evaporation heater is DN 300.
Furthermore, the distance between the center line of the waste water discharge pipe of the waste water evaporation heater and the center line of the waste water inlet pipe of the waste water evaporation tower in the vertical direction is 3900 mm.
Furthermore, the waste water discharge pipe of the waste water evaporation heater is connected with the waste water recovery pipe of the waste water evaporation tower.
The waste water steam condenser is a horizontal shell-and-tube heat exchanger, the material of a tube side is S30408, the material of a shell side is Q345R, and the heat exchange area is 1600-2The shell layer is used for introducing wastewater steam; the tube side material is Q345R, is used for letting in cooling medium, and waste water steam is condensed into condensate by the cooling medium.
Furthermore, a waste water steam condenser steam inlet pipe is arranged in the middle of the upper part of the waste water steam condenser, and the specification is DN 1400.
Further, waste water steam condenser below symmetry sets up two waste water steam condenser condensate outlet pipes, and every waste water steam condenser condensate outlet pipe central line is 3000mm with waste water steam condenser steam inlet pipe central line horizontal direction distance, and waste water steam condenser condensate outlet pipe specification is DN125, joins the back and forms waste water steam condenser condensate and joins the pipe, joins the pipe specification and is DN 125.
The waste water vapor condensate tank is a vertical tank made of S30408 and has a volume of 8-12m3。
Furthermore, a condensate inlet pipe of a waste water steam condensate tank is arranged at the top of the waste water steam condensate tank, and the specification is DN 125.
Furthermore, the condensate inlet pipe of the waste water vapor condensate tank is connected with the condensate outlet converging pipe of the waste water vapor condenser.
Furthermore, a condensate outlet pipe of the waste water steam condensate tank is arranged at the bottom of the waste water steam condensate tank, and the specification is DN 125.
The waste water steam condensate pump is in the form of a shield pump, and the flow rate of the waste water steam condensate pump is 30-45m3。
Furthermore, the specification of the waste water vapor condensate pump inlet pipe is DN125, and the waste water vapor condensate pump inlet pipe is connected with the waste water vapor condensate tank condensate outlet pipe.
Furthermore, the specification of the outlet pipe of the wastewater steam condensate pump is DN80, and the outlet pipe of the wastewater steam condensate pump is connected with the washing separation system.
The utility model has the advantages that:
compared with the prior art, the utility model has the advantages of as follows:
1. the main pollutant component of the cyclohexanone oxime wastewater steam condensate is a small amount of toluene, the cyclohexanone oxime wastewater evaporation condensate is adopted to replace desalted water to wash an oxime aqueous solution, the components of the washed oxime aqueous solution are cyclohexanone oxime, water and a small amount of toluene, compared with the components of the oxime aqueous solution washed by desalted water, the small amount of toluene is introduced, the subsequent oxime aqueous solution needs to be added with toluene as an extracting agent for further treatment, the integral operation of the system is not influenced, and the cyclohexanone oxime wastewater is recycled.
2. The waste water steam in the waste water steam condenser enters and exits at one time, so that the pressure drop of the shell is effectively reduced.
Drawings
Fig. 1 is a diagram of the device of the present invention.
Fig. 2 is a schematic view of the structure of the extension pipe in the waste water inlet pipe of the waste water evaporation tower of the utility model.
Wherein, 1, a waste water evaporation tower, 2, a waste water evaporation heater, 3, a waste water steam condenser, 4, a waste water steam condensate tank, 5, a waste water evaporation circulating pump, 6, a waste water steam condensate pump, 7, a waste water inlet pipe of the waste water evaporation tower, 8, a waste water steam outlet pipe of the waste water evaporation tower, 9, a circulating liquid outlet pipe of the waste water evaporation tower, 10, a waste water steam inlet pipe of the waste water evaporation tower, 11, an inlet pipe of the waste water evaporation circulating pump, 12, an outlet pipe of the waste water evaporation circulating pump, 13, a waste water inlet pipe of the waste water evaporation heater, 14, a waste water evaporation heater steam outlet pipe, 15, a waste water discharge pipe of the waste water evaporation heater, 16, a waste water recovery pipe of the waste water evaporation tower, 17, a waste water steam condenser inlet pipe, 18, a waste water steam condenser condensate, 21. the system comprises a waste water vapor condensate tank condensate outlet pipe, a waste water vapor condensate pump inlet pipe, a waste water vapor condensate pump outlet pipe, a waste water concentrated liquid conveying pipeline, a waste water concentrated liquid treatment system, a waste water concentrated liquid washing separation system, a waste water concentrated liquid conveying pipeline and a waste water concentrated liquid treatment system, wherein the waste water vapor condensate pump inlet pipe and the waste water concentrated liquid pump.
The invention is further described below with reference to the accompanying drawings and examples for the understanding of those skilled in the art:
Detailed Description
Example 1:
a cyclohexanone oxime effluent treatment plant mainly includes: the device comprises a wastewater evaporation tower (1), a wastewater evaporation circulating pump (5), a wastewater evaporation heater (2), a wastewater vapor condenser (3), a wastewater vapor condensate tank (4) and a wastewater vapor condensate pump (6).
The waste water evaporator comprises a waste water evaporation tower (1), a layer of regular corrugated packing is arranged in the waste water evaporation tower (1), the specification of the packing is phi 3000 × 1000mm, the packing is located at the upper part of a waste water inlet pipe (7) of the waste water evaporation tower, the vertical direction distance between the lowest layer of the packing and the central line of the waste water inlet pipe (7) of the waste water evaporation tower is 1400mm, the waste water inlet pipe (7) of the waste water evaporation tower is arranged in the middle of the waste water evaporation tower (1), small holes of phi 20 are arranged at intervals of 50mm in the lower half part of an inward-extending distribution pipe and are distributed at intervals of 60 degrees with the central line of the waste water inlet pipe (7) of the waste water evaporation tower, a waste water steam outlet pipe (8) of the waste water evaporation tower is arranged at the upper part of the waste water evaporation tower (1), the specification of a pipeline is DN1400, the distance between the central line of the waste water steam outlet pipe (8) of the waste water evaporation tower and the central line of the waste water inlet pipe (7) of the waste water evaporation tower is 3900mm, the waste water circulation pipe is arranged at the central line of the waste water evaporation tower, the upper part of the waste water evaporation tower, the waste water evaporation tower is 2900mm, the vertical direction distance between the waste water inlet pipe (9) of the waste water evaporation tower and the central line of the waste water evaporation tower is 3900mm, the waste water circulation pipe (10 mm, the waste water inlet pipe of the waste water circulation pipe of the waste water evaporation tower is arranged at the waste water evaporation tower.
The waste water evaporation circulating pump (5) is a shield pump with the flow rate of 250m3The specification of an inlet pipe (11) of the waste water evaporation circulating pump is DN250, and the inlet pipe (11) of the waste water evaporation circulating pump is connected with a circulating liquid outlet pipe (9) of the waste water evaporation tower; the specification of an outlet pipe (12) of the wastewater evaporation circulating pump is DN250, and the outlet pipe (12) of the wastewater evaporation circulating pump is connected with a wastewater inlet pipe (13) of the wastewater evaporation heater; a waste water concentrated solution conveying pipeline (25) is arranged on the pipeline of the waste water evaporation circulating pump outlet pipe (12), and the evaporated waste water concentrated solution is conveyed to a waste water concentrated solution treatment system (26).
The wastewater evaporation heater (2) is a falling film vertical heat exchanger, the heating medium is steam, the tube pass is made of S30408, the shell pass is made of Q345R, and the heat exchange area is 2200m2(ii) a The waste water is heated into steam by the heating steam introduced into the shell layer in the tube pass; a waste water evaporation heater steam outlet pipe (14) with the specification of DN1400 is arranged at the lower part of the tube side of the waste water evaporation heater (2), and the waste water evaporation heater steam outlet pipe (14) is connected with a waste water steam inlet pipe (10) of a waste water evaporation tower; a waste water inlet pipe (13) of the waste water evaporation heater is arranged at the upper part of the pipe pass of the waste water evaporation heater (2), the specification is DN300, and the waste water inlet pipe (13) of the waste water evaporation heater is connected with an outlet pipe (12) of a waste water evaporation circulating pump; the bottom of the waste water evaporation heater (2) is provided with a waste water discharge pipe (15) of the waste water evaporation heater, the specification is DN300, the vertical direction distance between the central line of the waste water discharge pipe (15) of the waste water evaporation heater and the central line of a waste water inlet pipe (7) of a waste water evaporation tower is 3900mm, and the waste water discharge pipe (15) of the waste water evaporation heater is connected with a waste water recovery pipe (16) of the waste water evaporation heater.
The waste water steam condenser (3) is a horizontal shell-and-tube heat exchanger, the material of the shell side is Q345R,heat exchange area 1600m2The shell layer is used for introducing wastewater steam; the pipe side material is Q345R, and is used for introducing circulating water and condensing waste water steam into condensate; a waste water steam condenser steam inlet pipe (17) is arranged in the middle of the upper part of the waste water steam condenser (3), and the specification is DN 1400; two waste water steam condenser condensate outlet pipes (18) are symmetrically arranged below the waste water steam condenser (3), the horizontal distance between the central line of each waste water steam condenser condensate outlet pipe (18) and the central line of a waste water steam condenser steam inlet pipe (17) is 3000mm, the specifications of the waste water steam condenser condensate outlet pipes (18) are DN125, and after confluence, a waste water steam condenser condensate confluence pipe (19) is formed, and the specification is DN 125.
The waste water vapor condensate tank (4) is a vertical tank made of S30408 and has a volume of 8m3A condensate inlet pipe (20) of the waste water vapor condensate tank is arranged at the top of the waste water vapor condensate tank (4), and the specification is DN 125; waste water vapor condensate tank condensate inlet pipe (20) is connected with waste water vapor condenser condensate converging pipe (19), waste water vapor condensate tank condensate outlet pipe (21) is arranged at the bottom of waste water vapor condensate tank (4), specification is DN125, and waste water vapor condenser condensate outlet pipe (21) is connected with waste water vapor condensate pump inlet pipe (22).
The waste water vapor condensate pump (6) is a shield pump with the flow rate of 30m3The specification of an inlet pipe (22) of the waste water vapor condensate pump is DN125, and the inlet pipe (22) of the waste water vapor condensate pump is connected with a condensate outlet pipe (21) of the waste water vapor condensate tank; the specification of the waste water steam condensate pump outlet pipe (23) is DN80, and the waste water steam condensate pump outlet pipe (23) is connected with the washing separation system (24).
Example 2:
a cyclohexanone oxime effluent treatment plant mainly includes: the device comprises a wastewater evaporation tower (1), a wastewater evaporation circulating pump (5), a wastewater evaporation heater (2), a wastewater vapor condenser (3), a wastewater vapor condensate tank (4) and a wastewater vapor condensate pump (6).
The waste water evaporator comprises a waste water evaporation tower (1), a layer of regular corrugated packing is arranged in the waste water evaporation tower (1), the specification of the packing is phi 3700 × 1000mm, the packing is located at the upper portion of a waste water inlet pipe (7) of the waste water evaporation tower, the vertical direction distance between the lowermost layer of the packing and the central line of the waste water inlet pipe (7) of the waste water evaporation tower is 1400mm, the waste water inlet pipe (7) of the waste water evaporation tower is arranged in the middle of the waste water evaporation tower (1), small holes 20 are formed in the lower half portion of the inward extending distribution pipe at intervals of 50mm and are distributed at intervals of 60 degrees with the central line of the waste water inlet pipe (7) of the waste water evaporation tower, a waste water steam outlet pipe (8) of the waste water evaporation tower is arranged in the upper portion of the waste water evaporation tower (1), the specification of the pipeline is DN1400, the distance between the central line of the waste water steam outlet pipe (8) of the waste water evaporation tower and the central line of the waste water inlet pipe (7) of the waste water evaporation tower is 2900mm, the waste water circulation pipe (10 mm) of the waste water evaporation tower is arranged in the vertical direction of the waste water evaporation tower, the waste water inlet pipe (9) and the waste water evaporation tower is 2900mm, the waste water circulation pipe (10 mm, the waste water evaporation tower, the waste water circulation pipe (10 mm) of the waste water evaporation tower is arranged in the waste water evaporation tower, the vertical direction distance between the waste water evaporation tower (10 mm and the waste water evaporation tower, the waste water evaporation.
The waste water evaporation circulating pump (5) is a shield pump with the flow rate of 300m3The specification of an inlet pipe (11) of the waste water evaporation circulating pump is DN250, and the inlet pipe (11) of the waste water evaporation circulating pump is connected with a circulating liquid outlet pipe (9) of the waste water evaporation tower; the specification of an outlet pipe (12) of the wastewater evaporation circulating pump is DN250, and the outlet pipe (12) of the wastewater evaporation circulating pump is connected with a wastewater inlet pipe (13) of the wastewater evaporation heater; a waste water concentrated solution conveying pipeline (25) is arranged on the pipeline of the waste water evaporation circulating pump outlet pipe (12), and the evaporated waste water concentrated solution is conveyed to a waste water concentrated solution treatment system (26).
The wastewater evaporation heater (2) is a falling film vertical heat exchanger, the heating medium is steam, the material of a tube pass is S30408, the material of a shell pass is Q345R, and the heat exchange area is 2600m2(ii) a The waste water is heated by the heating steam introduced from the shell layer in the tube passHeating to steam; a waste water evaporation heater steam outlet pipe (14) with the specification of DN1400 is arranged at the lower part of the tube side of the waste water evaporation heater (2), and the waste water evaporation heater steam outlet pipe (14) is connected with a waste water steam inlet pipe (10) of a waste water evaporation tower; a waste water inlet pipe (13) of the waste water evaporation heater is arranged at the upper part of the pipe pass of the waste water evaporation heater (2), the specification is DN300, and the waste water inlet pipe (13) of the waste water evaporation heater is connected with an outlet pipe (12) of a waste water evaporation circulating pump; the bottom of the waste water evaporation heater (2) is provided with a waste water discharge pipe (15) of the waste water evaporation heater, the specification is DN300, the vertical direction distance between the central line of the waste water discharge pipe (15) of the waste water evaporation heater and the central line of a waste water inlet pipe (7) of a waste water evaporation tower is 3900mm, and the waste water discharge pipe (15) of the waste water evaporation heater is connected with a waste water recovery pipe (16) of the waste water evaporation heater.
The waste water steam condenser (3) is a horizontal shell-and-tube heat exchanger, the shell side material is Q345R, and the heat exchange area is 2000m2The shell layer is used for introducing wastewater steam; the pipe side material is Q345R, and is used for introducing circulating water and condensing waste water steam into condensate; a waste water steam condenser steam inlet pipe (17) is arranged in the middle of the upper part of the waste water steam condenser (3), and the specification is DN 1400; two waste water steam condenser condensate outlet pipes (18) are symmetrically arranged below the waste water steam condenser (3), the horizontal distance between the central line of each waste water steam condenser condensate outlet pipe (18) and the central line of a waste water steam condenser steam inlet pipe (17) is 3000mm, the specifications of the waste water steam condenser condensate outlet pipes (18) are DN125, and after confluence, a waste water steam condenser condensate confluence pipe (19) is formed, and the specification is DN 125.
The waste water vapor condensate tank (4) is a vertical tank made of S30408 and has a volume of 12m3A condensate inlet pipe (20) of the waste water vapor condensate tank is arranged at the top of the waste water vapor condensate tank (4), and the specification is DN 125; waste water vapor condensate tank condensate inlet pipe (20) is connected with waste water vapor condenser condensate converging pipe (19), waste water vapor condensate tank condensate outlet pipe (21) is arranged at the bottom of waste water vapor condensate tank (4), specification is DN125, and waste water vapor condenser condensate outlet pipe (21) is connected with waste water vapor condensate pump inlet pipe (22).
The waste water vapor condensate pump (6) is a shield pump with the flow rate of 45m3The specification of an inlet pipe (22) of the waste water vapor condensate pump is DN125, and the inlet pipe (22) of the waste water vapor condensate pump is connected with a condensate outlet pipe (21) of the waste water vapor condensate tank; the specification of the waste water steam condensate pump outlet pipe (23) is DN80, and the waste water steam condensate pump outlet pipe (23) is connected with the washing separation system (24).
Example 3:
a cyclohexanone oxime effluent treatment plant mainly includes: the device comprises a wastewater evaporation tower (1), a wastewater evaporation circulating pump (5), a wastewater evaporation heater (2), a wastewater vapor condenser (3), a wastewater vapor condensate tank (4) and a wastewater vapor condensate pump (6).
The waste water evaporator comprises a waste water evaporation tower (1), a layer of regular corrugated packing is arranged in the waste water evaporation tower (1), the specification of the packing is phi 3300 × 1000mm, the packing is located at the upper part of a waste water inlet pipe (7) of the waste water evaporation tower, the vertical direction distance between the lowest layer of the packing and the central line of the waste water inlet pipe (7) of the waste water evaporation tower is 1400mm, the waste water inlet pipe (7) of the waste water evaporation tower is arranged in the middle of the waste water evaporation tower (1), small holes 20 are formed in the lower half part of the inward extending distribution pipe at intervals of 50mm and are distributed at intervals of 60 degrees with the central line of the waste water inlet pipe (7) of the waste water evaporation tower, a waste water steam inlet pipe (8) of the waste water evaporation tower is arranged in the upper part of the waste water evaporation tower (1), the pipeline specification of the waste water inlet pipe is DN1400, the central line distance between the central line of the waste water steam outlet pipe (8) of the waste water evaporation tower and the central line of the waste water inlet pipe (7) of the waste water evaporation tower is 2900mm, the waste water circulation pipe (10 mm) of the waste water evaporation tower is arranged in the vertical direction of the waste water evaporation tower, the waste water inlet pipe (9) is 2900mm, the waste water evaporation tower, the waste water circulation pipe (10 mm) is arranged in the waste water evaporation tower, the waste water evaporation tower is arranged in the vertical direction distance between the waste water evaporation tower and the waste water evaporation tower.
The waste water evaporation circulating pump (5) is a shield pump with the flow rate of 280m3The specification of an inlet pipe (11) of the waste water evaporation circulating pump is DN250, and the inlet pipe (11) of the waste water evaporation circulating pump is connected with a circulating liquid outlet pipe (9) of the waste water evaporation tower; the specification of an outlet pipe (12) of the wastewater evaporation circulating pump is DN250, and the outlet pipe (12) of the wastewater evaporation circulating pump is connected with a wastewater inlet pipe (13) of the wastewater evaporation heater; a waste water concentrated solution conveying pipeline (25) is arranged on the pipeline of the outlet pipe (12) of the waste water evaporation circulating pump, and the evaporated waste water concentrated solution is conveyed to a waste water concentrated solution treatment system (26).
The wastewater evaporation heater (2) is a falling film vertical heat exchanger, the heating medium is steam, the tube pass is made of S30408, the shell pass is made of Q345R, and the heat exchange area is 2400m2(ii) a The waste water is heated into steam by the heating steam introduced into the shell layer in the tube pass; a waste water evaporation heater steam outlet pipe (14) with the specification of DN1400 is arranged at the lower part of the tube side of the waste water evaporation heater (2), and the waste water evaporation heater steam outlet pipe (14) is connected with a waste water steam inlet pipe (10) of a waste water evaporation tower; a waste water inlet pipe (13) of the waste water evaporation heater is arranged at the upper part of the pipe pass of the waste water evaporation heater (2), the specification is DN300, and the waste water inlet pipe (13) of the waste water evaporation heater is connected with an outlet pipe (12) of a waste water evaporation circulating pump; the bottom of the waste water evaporation heater (2) is provided with a waste water discharge pipe (15) of the waste water evaporation heater, the specification is DN300, the vertical direction distance between the central line of the waste water discharge pipe (15) of the waste water evaporation heater and the central line of a waste water inlet pipe (7) of a waste water evaporation tower is 3900mm, and the waste water discharge pipe (15) of the waste water evaporation heater is connected with a waste water recovery pipe (16) of the waste water evaporation heater.
The waste water steam condenser (3) is a horizontal shell-and-tube heat exchanger, the shell side material is Q345R, and the heat exchange area is 1800m2The shell layer is used for introducing wastewater steam; the pipe side material is Q345R, and is used for introducing circulating water and condensing waste water steam into condensate; a waste water steam condenser steam inlet pipe (17) is arranged in the middle of the upper part of the waste water steam condenser (3), and the specification is DN 1400; two condensed liquid outlet pipes (18) of the wastewater vapor condenser are symmetrically arranged below the wastewater vapor condenser (3), and each wastewater vapor condenser is provided with a condensed liquid outlet pipeThe distance between the center line of the condensate outlet pipe (18) of the steam condenser and the center line of the steam inlet pipe (17) of the wastewater steam condenser in the horizontal direction is 3000mm, the specification of the condensate outlet pipe (18) of the wastewater steam condenser is DN125, and a condensate converging pipe (19) of the wastewater steam condenser is formed after converging, and the specification is DN 125.
The waste water vapor condensate tank (4) is a vertical tank made of S30408 and has a volume of 10m3A condensate inlet pipe (20) of the waste water vapor condensate tank is arranged at the top of the waste water vapor condensate tank (4), and the specification is DN 125; waste water vapor condensate tank condensate inlet pipe (20) is connected with waste water vapor condenser condensate converging pipe (19), waste water vapor condensate tank condensate outlet pipe (21) is arranged at the bottom of waste water vapor condensate tank (4), specification is DN125, and waste water vapor condenser condensate outlet pipe (21) is connected with waste water vapor condensate pump inlet pipe (22).
The waste water vapor condensate pump (6) is a shield pump with the flow rate of 40m3The specification of an inlet pipe (22) of the waste water vapor condensate pump is DN125, and the inlet pipe (22) of the waste water vapor condensate pump is connected with a condensate outlet pipe (21) of the waste water vapor condensate tank; the specification of the waste water steam condensate pump outlet pipe (23) is DN80, and the waste water steam condensate pump outlet pipe (23) is connected with the washing separation system (24).
By applying the 3 embodiments, the cyclohexanone oxime wastewater resource utilization is realized.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive faculty, based on the technical solutions of the present invention.
Claims (7)
1. A cyclohexanone oxime wastewater treatment device mainly comprises a wastewater evaporation tower, a wastewater evaporation circulating pump, a wastewater evaporation heater, a wastewater steam condenser, a wastewater steam condensate tank and a wastewater steam condensate pump; it is characterized in that the wastewater evaporation tower is a packed tower and is provided with a wastewater inlet pipe of the wastewater evaporation towerThe system comprises a waste water evaporation tower, a waste water steam outlet pipe, a waste water evaporation tower circulating liquid outlet pipe, a waste water evaporation tower waste water steam inlet pipe and a waste water evaporation heater waste water recovery pipe; the flow rate of the wastewater evaporation circulating pump is 250-300m3An inlet pipe of a waste water evaporation circulating pump and an outlet pipe of the waste water evaporation circulating pump are arranged; the heat exchange area of the wastewater evaporation heater is 2200-2(ii) a The heat exchange area of the wastewater steam condenser is 1600-2000m2(ii) a The waste water vapor condensate tank is a vertical tank with the volume of 8-12m3(ii) a The flow of the wastewater vapor condensate pump is 30-45m3The device is provided with a waste water vapor condensate pump inlet pipe and a waste water vapor condensate pump outlet pipe.
2. The cyclohexanone oxime wastewater treatment apparatus according to claim 1, wherein the wastewater evaporation tower is a packed tower, a layer of structured packing with a specification of phi 3000 × 1000mm to phi 3700 × 1000mm is arranged in the packed tower, a distance between the lowest layer of the packing and a central line of a wastewater inlet pipe of the wastewater evaporation tower in a vertical direction is 1400mm, a wastewater inlet pipe of the wastewater evaporation tower with a specification of DN125 is arranged in the middle of the wastewater evaporation tower, the wastewater inlet pipe of the wastewater evaporation tower is an inward-extending distribution pipe arranged in the middle of the tower, small holes with a phi 20 are formed in the lower half part of the inward-extending distribution pipe at intervals of 50mm and are distributed at intervals of 60 degrees from the central line of the wastewater inlet pipe of the wastewater evaporation tower, a wastewater vapor outlet pipe of the wastewater evaporation tower is arranged in the upper part of the wastewater evaporation tower, a distance between the central line of the wastewater vapor outlet pipe of the wastewater evaporation tower and the central line of the wastewater inlet pipe of the wastewater evaporation tower in a vertical direction is 550 mm, a distance between the central line of the wastewater inlet pipe of the wastewater circulation liquid outlet pipe of the wastewater evaporation tower and the wastewater heater in a vertical direction is 2900mm, a distance between the wastewater inlet pipe of the wastewater evaporation tower and the wastewater heater in a vertical direction is 200 mm.
3. The cyclohexanone oxime wastewater treatment device according to claim 2, wherein the specification of the inlet pipe of the wastewater evaporation circulating pump is DN250, and the inlet pipe of the wastewater evaporation circulating pump is connected with the circulating liquid outlet pipe of the wastewater evaporation tower; the specification of the outlet pipe of the wastewater evaporation circulating pump is DN250, and the outlet pipe of the wastewater evaporation circulating pump is connected with the wastewater inlet pipe of the wastewater evaporation heater; and a wastewater concentrated solution conveying pipeline is arranged on the outlet pipeline of the wastewater evaporation circulating pump.
4. The cyclohexanone oxime wastewater treatment device according to claim 1, wherein a wastewater evaporation heater steam outlet pipe with specification of DN1400 is arranged at the lower part of the tube pass of the wastewater evaporation heater; the steam outlet pipe of the wastewater evaporation heater is connected with the wastewater steam inlet pipe of the wastewater evaporation tower; a wastewater inlet pipe of the wastewater evaporation heater with the specification of DN300 is arranged at the upper part of the tube pass of the wastewater evaporation heater; a waste water inlet pipe of the waste water evaporation heater is connected with an outlet pipe of the waste water evaporation circulating pump; a wastewater discharge pipe of the wastewater evaporation heater with the specification of DN300 is arranged at the bottom of the wastewater evaporation heater; the distance between the center line of the waste water discharge pipe of the waste water evaporation heater and the center line of the waste water inlet pipe of the waste water evaporation tower in the vertical direction is 3900 mm; the waste water discharge pipe of the waste water evaporation heater is connected with the waste water recovery pipe of the waste water evaporation tower.
5. The cyclohexanone oxime wastewater treatment device according to claim 1, wherein a wastewater steam condenser steam inlet pipe is arranged in the middle above the wastewater steam condenser, and the specification is DN 1400; two waste water steam condenser condensate outlet pipes are symmetrically arranged below the waste water steam condenser, the distance between the central line of each waste water steam condenser condensate outlet pipe and the central line of the waste water steam condenser steam inlet pipe in the horizontal direction is 3000mm, the specifications of the waste water steam condenser condensate outlet pipes are DN125, a waste water steam condenser condensate converging pipe is formed after converging, and the specification of the converging pipe is DN 125.
6. The cyclohexanone oxime wastewater treatment device according to claim 1, wherein a wastewater vapor condensate tank condensate inlet pipe is arranged at the top of the wastewater vapor condensate tank, and the specification is DN 125; a condensate inlet pipe of the waste water vapor condensate tank is connected with a condensate outlet converging pipe of the waste water vapor condenser; and a condensate outlet pipe of the wastewater vapor condensate tank is arranged at the bottom of the wastewater vapor condensate tank, and the specification is DN 125.
7. The cyclohexanone oxime wastewater treatment device according to claim 1, wherein the specification of the inlet pipe of the wastewater vapor condensate pump is DN125, and the inlet pipe of the wastewater vapor condensate pump is connected with the condensate outlet pipe of the wastewater vapor condensate tank; the specification of the outlet pipe of the wastewater steam condensate pump is DN80, and the outlet pipe of the wastewater steam condensate pump is connected with the water washing separation system.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2019205729800 | 2019-04-25 | ||
| CN201920572980 | 2019-04-25 |
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| CN210944909U true CN210944909U (en) | 2020-07-07 |
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| CN201921168199.3U Active CN210944909U (en) | 2019-04-25 | 2019-07-24 | Cyclohexanone oxime effluent treatment plant |
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| CN (1) | CN210944909U (en) |
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