Residual ammonia water deoiling device

Abstract

The invention discloses a residual ammonia water deoiling device, and belongs to the technical field of ammonia water purification equipment. The residual ammonia water deoiling device comprises: a first tank having a first separation chamber, and a first port, a second port, a third port and a fourth port communicated with the first separation chamber; the third port is higher than the second port; the fourth opening is located between the third opening and the second opening in the height direction of the first tank; the first opening is used for being communicated with an outlet of a tar and ammonia water separation device and is formed in the tangential direction of the first tank; the second opening and the third opening are both used for being communicated with a low-position storage tank; the second tank is provided with a second separation cavity, and a fifth opening, a sixth opening, a seventh opening and an eighth opening which are communicated with the second separation cavity; the seventh opening is higher than the sixth opening; the eighth opening is located between the seventh opening and the sixth opening in the height direction of the second tank; the fifth opening is communicated with the fourth opening; the eighth opening is used for being communicated with a distillation device; and the seventh opening and the sixth opening are both used for being communicated with a low-position storage tank.

Description

Technical Field

[0001] The present application belongs to the technical field of ammonia water purification equipment, and in particular, relates to an ammonia water oil removal device. Background Art

[0002] The residual ammonia produced by coking production generally contains 250-500 mg / l of oil before entering the residual ammonia deoiling device. After being deoiled by the residual ammonia deoiling device, it is generally required to control the oil content of the residual ammonia to less than 100 mg / l before entering the ammonia distillation system to avoid blockage of the ammonia distillation equipment and excessive oil in the ammonia distillation wastewater.

[0003] In the related art, the residual ammonia water is generally deoiled by static gravity sedimentation in a vertical storage tank, and then deoiled by one or more combined methods such as flotation deoiling, filter filtration deoiling, etc. before being sent to the ammonia distillation system.

[0004] In the related art, the efficiency of removing oil from residual ammonia water is low, which easily causes blockage of ammonia distillation equipment. Summary of the invention

[0005] The present application aims to at least to some extent solve the technical problem of low oil removal efficiency of residual ammonia water in the related art. To this end, the present application provides a residual ammonia water oil removal device.

[0006] An embodiment of the present application provides a residual ammonia water oil removal device, comprising:

[0007] A first tank has a first separation chamber and a first port, a second port, a third port and a fourth port connected to the first separation chamber; the third port is higher than the second port; along the height direction of the first tank, the fourth port is located between the third port and the second port; the first port is used to communicate with the outlet of the tar-ammonia-water separation device and is arranged along the tangential direction of the first tank; the second port and the third port are both used to communicate with the low-level storage tank;

[0008] The second tank has a second separation chamber and a fifth port, a sixth port, a seventh port and an eighth port connected to the second separation chamber; the seventh port is higher than the sixth port; along the height direction of the second tank, the eighth port is located between the seventh port and the sixth port; the fifth port is connected to the fourth port; the eighth port is used to connect with the distillation device; the seventh port and the sixth port are both used to connect with the low-level storage tank.

[0009] In some embodiments, the first tank further comprises a first heat preservation chamber and a ninth port and a tenth port connected to the first heat preservation chamber; the tenth port is used to communicate with the distillation device;

[0010] The second tank also has a second heat preservation chamber and an eleventh port and a twelfth port communicating with the second heat preservation chamber;

[0011] The eleventh port is communicated with the eighth port; the twelfth port is communicated with the ninth port.

[0012] In some embodiments, the second tank further has a thirteenth port communicating with the second separation chamber, and the first tank further has a fourteenth port communicating with the first separation chamber;

[0013] The residual ammonia water deoiling device also includes:

[0014] a first pipe connected to the fourth port and the thirteenth port;

[0015] a second tube connected to the first port and the fifth port;

[0016] The third tube and the fourth tube are both connected to the first tube and the second tube;

[0017] A first valve and a second valve, both installed on the first pipe, respectively located between the fourth port and the third pipe, and between the thirteenth port and the fourth pipe;

[0018] The third valve and the fourth valve are installed on the third pipe and the fourth pipe respectively;

[0019] a fifth tube, one end of which is connected to the tar-ammonia-water separation device and the other end of which is connected to the second tube;

[0020] The fifth valve and the sixth valve are both installed on the second pipe, and are respectively located between the third pipe and the fifth pipe, and between the fourth pipe and the fifth pipe.

[0021] In some embodiments, the residual ammonia water oil removal device further comprises:

[0022] a sixth pipe, used for connecting to the distillation device;

[0023] The seventh tube and the eighth tube are connected to the tenth port and the sixth tube, and the twelfth port and the sixth tube, respectively;

[0024] a ninth tube connected to the seventh tube and the eleventh port;

[0025] a tenth tube connected to the eighth port and the ninth tube;

[0026] a seventh valve, installed on the tenth pipe;

[0027] an eleventh tube connected to the ninth port and the eighth tube;

[0028] A twelfth tube connected to the fourteenth port and the eleventh tube;

[0029] A ninth valve is installed on the twelfth pipe.

[0030] In some embodiments, the residual ammonia water oil removal device further comprises:

[0031] an eighth valve, installed on the ninth pipe and located between the tenth pipe and the seventh pipe;

[0032] The tenth valve is installed on the eleventh pipe and is located between the eighth pipe and the twelfth pipe.

[0033] In some embodiments, the residual ammonia water oil removal device further comprises:

[0034] An eleventh valve is installed on the seventh pipe and is located between the ninth pipe and the sixth pipe.

[0035] The twelfth valve is installed on the eighth pipe and located between the eleventh pipe and the seventh pipe.

[0036] In some embodiments, the residual ammonia oil removal device also includes a pump installed on the sixth pipe.

[0037] In some embodiments, the residual ammonia oil removal device also includes a thirteenth pipe, one side of the thirteenth pipe is used to communicate with the low-level storage tank, and the other side is respectively connected to the third port, the second port, the sixth port and the seventh port.

[0038] In some embodiments, the fifth port is arranged along a tangential direction of the second tank.

[0039] In some embodiments, the residual ammonia water oil removal device further includes a heating device disposed outside the first separation chamber and the second separation chamber.

[0040] The present invention has at least the following beneficial effects:

[0041] The residual ammonia water oil removal device connects the first tank and the second tank in series to perform centrifugal and gravity sedimentation separation and gravity sedimentation separation in sequence, which effectively improves the residual ammonia water oil removal efficiency. The residual ammonia water has a good oil removal effect. After oil removal, the oil content of the residual ammonia water can reach 50mg / l, which is far lower than the requirement of 100mg / l and meets the oil content requirement of the residual ammonia water entering the ammonia vaporization system. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0043] Figure 1 A schematic diagram of a residual ammonia water oil removal device in one or more embodiments of the present application is shown.

[0044] Figure 2 A schematic diagram of the first port and the fifth port of the residual ammonia water oil removal device in one or more embodiments of the present application is shown.

[0045] Figure numerals: 100-residual ammonia water oil removal device, 1-first tank, 1a-first separation chamber, 1b-first insulation chamber, 1c-first port, 1d-second port, 1e-third port, 1f-fourth port, 1g-ninth port, 1h-tenth port, 1i-fourteenth port, 2-second tank, 2a-second separation chamber, 2b-second insulation chamber, 2c-fifth port, 2d-sixth port, 2e-seventh port, 2f-eighth port, 2g-eleventh port, 2h-twelfth port, 2i-thirteenth port, 3-first tube, 4-second tube, 5-third tube, 6-fourth tube, 7-first valve, 8-second valve, 9-third valve, 10-fourth valve, 11-fifth pipe, 12-fifth valve, 13-sixth valve, 14-sixth pipe, 15-seventh pipe, 16-eighth pipe, 17-ninth pipe, 18-tenth pipe, 19-seventh valve, 20-eighth valve, 21-eleventh pipe, 22-twelfth pipe, 23-ninth valve, 24-tenth valve, 25-eleventh valve, 26-pump, 27-thirteenth pipe, 28-twelfth valve, 29-heating device, 200-tar and ammonia separation device, 300-distillation device, 400-low-level storage tank. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] It should be noted that all directional indications in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between various components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0048] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] In addition, in the present invention, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0050] The residual ammonia water is generally deoiled by static gravity sedimentation in a vertical storage tank, and then deoiled by one or more combinations of methods such as flotation deoiling and filter filtration deoiling before being sent to the ammonia distillation system. The main problems with vertical storage tank static gravity sedimentation deoiling are unreasonable structure, short sedimentation time, low oil removal efficiency, etc. The main problems with flotation deoiling and filter filtration deoiling are low oil removal efficiency and easy clogging, which ultimately lead to the oil content of the residual ammonia water failing to meet the requirements of the ammonia distillation system. In order to solve the problem of short sedimentation time for static gravity sedimentation deoiling in vertical storage tanks, the relevant technology improves the oil removal efficiency by setting a conical bottom plate or partition in the vertical storage tank, increasing the volume and number of a single storage tank to extend the sedimentation time, etc., but these methods have disadvantages such as high investment and large footprint, and the improvement of oil removal efficiency is not obvious.

[0051] In the related art, there is a technical problem of low oil removal efficiency when removing oil from residual ammonia water. The embodiment of the present application provides a residual ammonia water oil removal device, which can at least solve the technical problem of low oil removal efficiency of residual ammonia water to a certain extent.

[0052] The present application is described below with reference to the accompanying drawings and specific embodiments:

[0053] In some embodiments of the present application, the fourth port 1f and the fourteenth port 1i are both located between the third port 1e and the second port 1d, the fourth port 1f is higher than the fourteenth port 1i, the fourth port 1f is located in the upper region between the third port 1e and the second port 1d, and the fourteenth port 1i is set in the lower region between the third port 1e and the second port 1d; the thirteenth port 2i and the eighth port 2f are both located between the seventh port 2e and the sixth port 2d, the thirteenth port 2i is higher than the eighth port 2f, the thirteenth port 2i is set in the upper region between the seventh port 2e and the sixth port 2d, and the eighth port 2f is set in the lower region between the seventh port 2e and the sixth port 2d. For the convenience of the following description, the present application is introduced below with the structure of this embodiment.

[0054] like Figure 1 and Figure 2 As shown, a residual ammonia water oil removal device 100 includes: a first tank 1 and a second tank 2.

[0055] The first tank 1 has a first separation chamber 1a and a first port 1c, a second port 1d, a third port 1e and a fourth port 1f connected to the first separation chamber 1a; the third port 1e is higher than the second port 1d; along the height direction of the first tank 1, the fourth port 1f is located between the third port 1e and the second port 1d; the first port 1c is arranged along the tangential direction of the first tank 1; the first port 1c is used to be connected to the outlet of the tar-ammonia-water separation device 200; the second port 1d and the third port 1e are both used to be connected to the low-level storage tank 400.

[0056] The second tank 2 has a second separation chamber 2a and a fifth port 2c, a sixth port 2d, a seventh port 2e and an eighth port 2f connected to the second separation chamber 2a; the seventh port 2e is higher than the sixth port 2d; along the height direction of the second tank 2, the eighth port 2f is located between the seventh port 2e and the sixth port 2d; the fifth port 2c is connected to the fourth port 1f; the eighth port 2f is used to connect with the distillation device 300; the seventh port 2e and the sixth port 2d are both used to connect with the low-level storage tank 400.

[0057] The residual ammonia water with a certain pressure discharged from the outlet of the tar-ammonia water separation device 200 enters the first separation chamber 1a through the first port 1c. Since the first port 1c is arranged along the tangential direction of the first tank 1, after the residual ammonia water enters from the first port 1c, it will rotate along the inner wall of the first separation chamber 1a, thereby realizing the centrifugal separation of the residual ammonia water. After the residual ammonia water enters the first separation chamber 1a, it will also undergo sedimentation separation under the action of gravity. After a certain period of separation, the tar and dust with a density heavier than the residual ammonia water will settle to the bottom of the first separation chamber 1a and be discharged regularly through the second port 1d. The tar and dust with a density lighter than the residual ammonia water float to the upper part of the first separation chamber 1a and overflow and discharge through the third port 1e. The residual ammonia water in the middle section flows out through the fourth port 1f and enters the second separation chamber 2a through the fifth port 2c.

[0058] After the remaining ammonia water enters the second separation chamber 2a through the fifth port 2c, it is separated by gravity sedimentation for a certain period of time. Tar and dust with a density heavier than the remaining ammonia water are deposited at the bottom of the second separation chamber 2a and are discharged regularly through the sixth port 2d. Tar and dust with a density lighter than the remaining ammonia water float to the upper part of the second separation chamber 2a and overflow and discharge through the seventh port 2e. The remaining ammonia water in the middle section is discharged from the eighth port 2f, thereby completing the degreasing work of the remaining ammonia water.

[0059] It is easy to understand that the second port 1d and the sixth port 2d are respectively arranged at the bottom of the first separation chamber 1a and the second separation chamber 2a to ensure that the tar and dust deposited at the bottom of the first separation chamber 1a and the second separation chamber 2a can be discharged through the second port 1d and the sixth port 2d respectively. It is easy to understand that the third port 1e and the seventh port 2e are respectively arranged in the upper area of ​​the first separation chamber 1a and the second separation chamber 2a to ensure that the tar and dust floating on the first separation chamber 1a and the second separation chamber 2a with a density lighter than the residual ammonia water can be discharged through the third port 1e and the seventh port 2e respectively. It is easy to understand that the fourth port 1f is located between the third port 1e and the second port 1d to ensure that the residual ammonia water in the upper part of the middle section of the first separation chamber 1a can flow out through the fourth port 1f. The eighth port 2f is located between the seventh port 2e and the sixth port 2d to ensure that the residual ammonia water in the lower part of the middle section of the second separation chamber 2a can flow out through the eighth port 2f.

[0060] The residual ammonia water oil removal device 100 of the present invention performs centrifugal and gravity sedimentation separation and gravity sedimentation separation in sequence by connecting the first tank 1 and the second tank 2 in series, thereby effectively improving the residual ammonia water oil removal efficiency. The residual ammonia water has a good oil removal effect. The oil content of the residual ammonia water after oil removal can reach 50 mg / l, which is far lower than the requirement of 100 mg / l, and meets the oil content requirement of the residual ammonia water entering the ammonia vaporization system.

[0061] In some embodiments, the first tank 1 further comprises a first insulation chamber 1b and a ninth port 1g and a tenth port 1h connected to the first insulation chamber 1b; the tenth port 1h is used to connect to the distillation device 300; the second tank 2 further comprises a second insulation chamber 2b and an eleventh port 2g and a twelfth port 2h connected to the second insulation chamber 2b; the eleventh port 2g is connected to the eighth port 2f; the twelfth port 2h is connected to the ninth port 1g. The first insulation chamber 1b and the first separation chamber 1a are two independent chambers, the first insulation chamber 1b is arranged at the bottom area of ​​the first separation chamber 1a, and the fluid in the first insulation chamber 1b can exchange heat with the fluid in the first separation chamber 1a. The second insulation chamber 2b and the second separation chamber 2a are two independent chambers, the second insulation chamber 2b is arranged at the bottom area of ​​the second separation chamber 2a, and the fluid in the second insulation chamber 2b can exchange heat with the fluid in the second separation chamber 2a. With this design, the remaining ammonia water discharged from the eighth port 2f first enters the second insulation chamber 2b through the eleventh port 2g to insulate the tar at the bottom of the second separation chamber 2a, which is conducive to the discharge of the tar at the bottom of the second separation chamber 2a; then it is discharged from the twelfth port 2h, and then enters the first insulation chamber 1b through the ninth port 1g to insulate the tar at the bottom of the first separation chamber 1a, which is conducive to the discharge of the tar at the bottom of the first separation chamber 1a; finally, it is discharged from the tenth port 1h and enters the distillation device 300 for subsequent processes such as ammonia evaporation.

[0062] In some embodiments, the second tank 2 also has a thirteenth port 2i connected to the second separation chamber 2a, and the first tank 1 also has a fourteenth port 1i connected to the first separation chamber 1a; the residual ammonia oil removal device 100 also includes: a first tube 3, a second tube 4, a third tube 5, a fourth tube 6, a first valve 7, a second valve 8, a third valve 9, a fourth valve 10, a fifth tube 11, a fifth valve 12 and a sixth valve 13. The first pipe 3 is connected to the fourth port 1f and the thirteenth port 2i; the second pipe 4 is connected to the first port 1c and the fifth port 2c; the third pipe 5 and the fourth pipe 6 are both connected to the first pipe 3 and the second pipe 4; the first valve 7 and the second valve 8 are both installed on the first pipe 3, and are respectively located between the fourth port 1f and the third pipe 5, and between the thirteenth port 2i and the fourth pipe 6; the third valve 9 and the fourth valve 10 are respectively installed on the third pipe 5 and the fourth pipe 6; one end of the fifth pipe 11 is used to be connected to the tar ammonia water separation device 200, and the other end is connected to the second pipe 4; the fifth valve 12 and the sixth valve 13 are both installed on the second pipe 4, and are respectively located between the third pipe 5 and the fifth pipe 11, and between the fourth pipe 6 and the fifth pipe 11.

[0063] It should be noted that, along the height direction of the second tank 2, the thirteenth port 2i is located between the seventh port 2e and the sixth port 2d. Along the height direction of the first tank 1, the fourteenth port 1i is located between the third port 1e and the second port 1d. With such a design, the order in which the remaining ammonia water enters the first tank 1 and the second tank 2 can be controlled by controlling the opening and closing of each valve. In addition, with such a design, when the first tank 1 or the second tank 2 is damaged or under maintenance, the valve can be controlled so that the remaining ammonia water discharged from the tar ammonia water separation device 200 only enters the first tank 1 or the second tank 2, which facilitates the use of the remaining ammonia water deoiling device 100 under various working conditions.

[0064] Under the condition that the fifth valve 12 is open, the sixth valve 13 is closed, the first valve 7 is open, the third valve 9 is closed, the second valve 8 is closed, and the fourth valve 10 is open, the remaining ammonia water first enters the first tank 1 and then the second tank 2, and the remaining ammonia water is finally discharged from the eighth port 2f. The specific process is as follows:

[0065] The residual ammonia water discharged from the tar-ammonia water separation device 200 enters the first separation chamber 1a from the first port 1c under the guidance of the fifth tube 11 and the second tube 4. After a certain period of separation, the tar and dust with a density heavier than the residual ammonia water are deposited at the bottom of the first separation chamber 1a and are discharged regularly through the second port 1d. The tar and floating dust with a density lighter than the residual ammonia water float to the upper part of the first separation chamber 1a and overflow and discharge through the third port 1e. The residual ammonia water in the upper part of the middle section flows out through the fourth port 1f and enters the second separation chamber 2a through the fifth port 2c under the guidance of the first tube 3, the fourth tube 6 and the second tube 4. After the residual ammonia water enters the second separation chamber 2a through the fifth port 2c, it is separated by gravity sedimentation for a certain period of time. The tar and dust with a density heavier than the residual ammonia water are deposited at the bottom of the second separation chamber 2a and are discharged regularly through the sixth port 2d. The tar and floating dust with a density lighter than the residual ammonia water float to the upper part of the second separation chamber 2a and overflow and discharge through the seventh port 2e. The remaining ammonia water in the lower part of the middle section is discharged from the eighth port 2f, thereby completing the oil removal work of the remaining ammonia water.

[0066] On the contrary, under the condition that the fifth valve 12 is closed, the sixth valve 13 is opened, the first valve 7 is closed, the third valve 9 is opened, the second valve 8 is opened, and the fourth valve 10 is closed, the remaining ammonia water first enters the second tank 2 and then enters the first tank 1, and the remaining ammonia water is finally discharged from the fourteenth port 1i. The specific process is as follows:

[0067] The remaining ammonia water discharged from the tar-ammonia separation device 200 enters the second separation chamber 2a from the fifth port 2c under the guidance of the fifth tube 11 and the second tube 4. After a certain period of gravity sedimentation and separation, the tar and dust with a density heavier than the remaining ammonia water are deposited at the bottom of the second separation chamber 2a and are regularly discharged through the sixth port 2d. The tar and floating dust with a density lighter than the remaining ammonia water float to the upper part of the second separation chamber 2a and overflow and discharge through the seventh port 2e. The remaining ammonia water in the upper part of the middle section is discharged from the thirteenth port 2i and enters the first separation chamber 1a through the first port 1c under the guidance of the first tube 3, the third tube 5 and the second tube 4. After a certain period of separation, the tar and dust with a density heavier than the remaining ammonia water are deposited at the bottom of the first separation chamber 1a and are regularly discharged through the second port 1d. Tar and floating dust with a density lighter than the remaining ammonia water float to the upper part of the first separation chamber 1a and overflow and discharge through the third port 1e, and the remaining ammonia water in the lower part of the middle section is discharged through the fourteenth port 1i, thereby completing the oil removal of the remaining ammonia water.

[0068] When the fifth valve 12 is open, the sixth valve 13 is closed, the first valve 7 is closed, and the third valve 9 is closed, the remaining ammonia water only enters the first tank 1 and no longer enters the second tank 2. The remaining ammonia water is finally discharged from the fourteenth port 1i. The specific process is as follows:

[0069] The residual ammonia water discharged from the tar-ammonia water separation device 200 enters the first separation chamber 1a from the first port 1c under the guidance of the fifth pipe 11 and the second pipe 4. After a certain period of separation, the tar and dust with a density heavier than the residual ammonia water are deposited at the bottom of the first separation chamber 1a and are discharged regularly through the second port 1d. The tar and dust with a density lighter than the residual ammonia water float to the upper part of the first separation chamber 1a and overflow and discharge through the third port 1e. The residual ammonia water in the lower part of the middle section flows out through the fourteenth port 1i, thereby completing the degreasing work of the residual ammonia water.

[0070] On the contrary, when the fifth valve 12 is closed, the sixth valve 13 is opened, the fourth valve 10 is closed, and the second valve 8 is closed, the remaining ammonia water only enters the second tank 2 and no longer enters the first tank 1, and the remaining ammonia water is finally discharged from the eighth port 2f. The specific process is as follows:

[0071] The residual ammonia water discharged from the tar-ammonia water separation device 200 enters the second separation chamber 2a from the fifth port 2c under the guidance of the fifth pipe 11 and the second pipe 4. After a certain period of gravity sedimentation and separation, the tar and dust with a density heavier than the residual ammonia water are deposited at the bottom of the second separation chamber 2a and are discharged regularly through the sixth port 2d. The tar and dust with a density lighter than the residual ammonia water float to the upper part of the second separation chamber 2a and overflow and discharge through the seventh port 2e. The residual ammonia water in the lower part of the middle section is discharged from the eighth port 2f, thereby completing the degreasing work of the residual ammonia water.

[0072] In some embodiments, the residual ammonia water oil removal device 100 further includes: a sixth pipe 14, a seventh pipe 15, an eighth pipe 16, a ninth pipe 17, a tenth pipe 18, a seventh valve 19, an eleventh pipe 21, a twelfth pipe 22 and a ninth valve 23. The sixth pipe 14 is used to connect the distillation device 300; the seventh pipe 15 and the eighth pipe 16 are connected to the tenth port 1h and the sixth pipe 14, the twelfth port 2h and the sixth pipe 14 respectively; the ninth pipe 17 is connected to the seventh pipe 15 and the eleventh port 2g; the tenth pipe 18 is connected to the eighth port 2f and the ninth pipe 17; the seventh valve 19 is installed on the tenth pipe 18; the eleventh pipe 21 is connected to the ninth port 1g and the eighth pipe 16; the twelfth pipe 22 is connected to the fourteenth port 1i and the eleventh pipe 21; the ninth valve 23 is installed on the twelfth pipe 22.

[0073] With this design, the ammonia water can enter the first insulation chamber 1b and the second insulation chamber 2b in sequence through various pipes.

[0074] Under the condition that the fifth valve 12 is open, the sixth valve 13 is closed, the first valve 7 is open, the third valve 9 is closed, the second valve 8 is closed, and the fourth valve 10 is open, the remaining ammonia water first enters the first tank 1 and then enters the second tank 2, and the remaining ammonia water is finally discharged from the eighth port 2f. In this process, the ninth valve 23 can be closed at the same time to prevent the remaining ammonia water in the lower part of the middle section in the first separation chamber 1a from being discharged through the fourteenth port 1i. The remaining ammonia water is discharged from the eighth port 2f, and under the guidance of the tenth tube 18 and the ninth tube 17, it enters the second insulation chamber 2b through the eleventh port 2g, and then is discharged into the eighth tube 16 and the eleventh tube 21 through the twelfth port 2h, and then enters the first insulation chamber 1b from the ninth port 1g, and then is discharged into the seventh tube 15 and the sixth tube 14 through the tenth port 1h, and finally enters the distillation device 300 under the guidance of the sixth tube 14, and performs subsequent processes such as ammonia distillation.

[0075] On the contrary, under the condition that the fifth valve 12 is closed, the sixth valve 13 is opened, the first valve 7 is closed, the third valve 9 is opened, the second valve 8 is opened, and the fourth valve 10 is closed, the remaining ammonia water first enters the second tank 2 and then enters the first tank 1, and the remaining ammonia water is finally discharged from the fourteenth port 1i. In this process, the seventh valve 19 can be closed at the same time to prevent the remaining ammonia water in the lower part of the middle section in the second separation chamber 2a from being discharged through the eighth port 2f. The remaining ammonia water is discharged from the fourteenth port 1i, and under the guidance of the twelfth tube 22 and the eleventh tube 21, it enters the first insulation chamber 1b through the ninth port 1g, and then is discharged to the seventh tube 15 and the ninth tube 17 through the tenth port 1h, and then enters the second insulation chamber 2b through the eleventh port 2g, and then is discharged to the eighth tube 16 and the sixth tube 14 through the twelfth port 2h, and finally enters the distillation device 300 under the guidance of the sixth tube 14, and performs subsequent processes such as ammonia distillation.

[0076] Under the condition that the fifth valve 12 is open, the sixth valve 13 is closed, the first valve 7 is closed, and the third valve 9 is closed, the remaining ammonia water only enters the first tank 1, and no longer enters the second tank 2, and the remaining ammonia water is finally discharged from the fourteenth port 1i. In this process, the seventh valve 19 can be closed at the same time to prevent the remaining ammonia water discharged from the tenth port 1h from entering the second separation chamber 2a through the eighth port 2f. The remaining ammonia water is discharged from the fourteenth port 1i, and under the guidance of the twelfth tube 22 and the eleventh tube 21, it enters the first insulation chamber 1b through the ninth port 1g, and then is discharged into the seventh tube 15 and the sixth tube 14 through the tenth port 1h, and finally enters the distillation device 300 under the guidance of the sixth tube 14, and performs subsequent processes such as ammonia evaporation.

[0077] On the contrary, under the condition that the fifth valve 12 is closed, the sixth valve 13 is opened, the fourth valve 10 is closed, and the second valve 8 is closed, the remaining ammonia water only enters the second tank 2, and no longer enters the first tank 1, and the remaining ammonia water is finally discharged from the eighth port 2f. In this process, the ninth valve 23 can be closed at the same time to prevent the remaining ammonia water discharged from the twelfth port 2h from entering the first separation chamber 1a through the fourteenth port 1i. The remaining ammonia water is discharged from the eighth port 2f, and under the guidance of the tenth tube 18 and the ninth tube 17, it enters the second insulation chamber 2b through the eleventh port 2g, and then is discharged into the eighth tube 16 and the sixth tube 14 through the twelfth port 2h, and finally enters the distillation device 300 under the guidance of the sixth tube 14, and performs subsequent processes such as ammonia distillation.

[0078] In some embodiments, the residual ammonia water oil removal device 100 further includes: an eighth valve 20 and a tenth valve 24. The eighth valve 20 is installed on the ninth pipe 17 and is located between the tenth pipe 18 and the seventh pipe 15; the tenth valve 24 is installed on the eleventh pipe 21 and is located between the eighth pipe 16 and the twelfth pipe 22.

[0079] With this design, the opening and closing of the eighth valve 20 and the tenth valve 24 can be controlled so that the remaining ammonia water discharged from the eighth port 2f or the fourteenth port 1i can flow along the set path, pass through the second insulation chamber 2b and the first insulation chamber 1b, and insulate the tar at the bottom of the second separation chamber 2a and the first separation chamber 1a, which is beneficial to the discharge of the bottom tar.

[0080] Specifically, under the condition that the fifth valve 12 is open, the sixth valve 13 is closed, the first valve 7 is open, the third valve 9 is closed, the second valve 8 is closed, and the fourth valve 10 is open, the remaining ammonia water first enters the first tank 1 and then enters the second tank 2, and the remaining ammonia water is finally discharged from the eighth port 2f. In this process, the ninth valve 23 can be closed at the same time to prevent the remaining ammonia water in the middle section of the first separation chamber 1a from being discharged through the fourteenth port 1i. The eighth valve 20 can also be closed at the same time to prevent the remaining ammonia water discharged from the tenth tube 18 from directly entering the seventh tube 15 without passing through the second insulation chamber 2b and the first insulation chamber 1b, and entering the sixth tube 14 along the seventh tube 15, and entering the distillation device 300 through the sixth tube 14, affecting the tar insulation at the bottom of the first separation chamber 1a and the second separation chamber 2a.

[0081] Specifically, under the condition that the fifth valve 12 is closed, the sixth valve 13 is opened, the first valve 7 is closed, the third valve 9 is opened, the second valve 8 is opened, and the fourth valve 10 is closed, the remaining ammonia water first enters the second tank 2 and then enters the first tank 1, and the remaining ammonia water is finally discharged from the fourteenth port 1i. In this process, the seventh valve 19 can be closed at the same time to prevent the remaining ammonia water in the middle section of the second separation chamber 2a from being discharged through the eighth port 2f. The tenth valve 24 can also be closed at the same time to prevent the remaining ammonia water discharged from the twelfth tube 22 from directly entering the eighth tube 16 without passing through the first insulation chamber 1b and the second insulation chamber 2b, and entering the sixth tube 14 along the eighth tube 16, and entering the distillation device 300 through the sixth tube 14, affecting the tar insulation at the bottom of the first separation chamber 1a and the second separation chamber 2a.

[0082] Specifically, under the condition that the fifth valve 12 is opened, the sixth valve 13 is closed, the first valve 7 is closed, and the third valve 9 is closed, the remaining ammonia water only enters the first tank 1, and no longer enters the second tank 2, and the remaining ammonia water is finally discharged from the fourteenth port 1i. In this process, the eighth valve 20 and the tenth valve 24 can be closed at the same time to prevent the remaining ammonia water discharged from the fourteenth port 1i from entering the second insulation chamber 2b or being directly discharged without passing through the first insulation chamber 1b.

[0083] Specifically, under the condition that the fifth valve 12 is closed, the sixth valve 13 is opened, the fourth valve 10 is closed, and the second valve 8 is closed, the remaining ammonia water only enters the second tank 2 and no longer enters the first tank 1, and the remaining ammonia water is finally discharged from the eighth port 2f. In this process, the eighth valve 20 and the tenth valve 24 can be closed at the same time to prevent the remaining ammonia water discharged from the eighth port 2f from entering the first insulation chamber 1b or being directly discharged without passing through the second insulation chamber 2b.

[0084] In some embodiments, the residual ammonia water oil removal device 100 further includes: an eleventh valve 25 and a twelfth valve 28. The eleventh valve 25 is installed on the seventh pipe 15 and is located between the ninth pipe 17 and the sixth pipe 14. The twelfth valve 28 is installed on the eighth pipe 16 and is located between the eleventh pipe 21 and the seventh pipe 15.

[0085] With this design, the opening and closing of the eleventh valve 25 and the twelfth valve 28 can be controlled so that the remaining ammonia water discharged from the tenth port 1h or the twelfth port 2h can flow along the set path, pass through the second insulation chamber 2b and the first insulation chamber 1b, and insulate the tar at the bottom of the second separation chamber 2a and the first separation chamber 1a, which is beneficial to the discharge of the bottom tar.

[0086] Specifically, the remaining ammonia water first enters the first tank 1 and then enters the second tank 2. When the remaining ammonia water is finally discharged from the eighth port 2f, the twelfth valve 28 is closed and the eleventh valve 25 is opened.

[0087] Specifically, the remaining ammonia water first enters the second tank 2 and then enters the first tank 1. When the remaining ammonia water is finally discharged from the fourteenth port 1i, the twelfth valve 28 is opened and the eleventh valve 25 is closed.

[0088] Specifically, when the remaining ammonia water only enters the first tank 1 but does not enter the second tank 2 , the eleventh valve 25 is opened and the twelfth valve 28 is closed.

[0089] Specifically, when the remaining ammonia water only enters the second tank 2 but does not enter the first tank 1 , the twelfth valve 28 is opened and the eleventh valve 25 is closed.

[0090] In some embodiments, the residual ammonia water oil removal device 100 further includes a pump 26 installed on the sixth pipe 14. The pump 26 is installed on the sixth pipe 14 and is used to transfer the residual ammonia water from the seventh pipe 15 and the eighth pipe 16 to the distillation device 300. The arrangement of the pump 26 helps to improve the fluidity of the residual ammonia water.

[0091] In some embodiments, the residual ammonia water deoiling device 100 further includes a thirteenth pipe 27, one side of the thirteenth pipe 27 is used to communicate with the low-level storage tank 400, and the other side is respectively connected to the third port 1e, the second port 1d, the sixth port 2d and the seventh port 2e. After such a design, the tar, dust, floating layer, etc. discharged from the third port 1e, the second port 1d, the sixth port 2d and the seventh port 2e can flow into the low-level storage tank 400 along the thirteenth pipe 27 for storage. It is easy to understand that when the ammonia water deoiling device 100 is installed, the height of the first tank 1 and the second tank 2 are both higher than the low-level storage tank 400, so that the tar, dust, floating layer, etc. discharged from the third port 1e, the second port 1d, the sixth port 2d and the seventh port 2e can flow into the low-level storage tank 400 for storage along the thirteenth pipe 27 under the action of gravity.

[0092] like Figure 2 As shown, in some embodiments, the fifth port 2c is arranged along the tangential direction of the second tank 2. With such a design, after the residual ammonia water enters from the fifth port 2c, it will rotate along the inner wall of the second separation chamber 2a, thereby realizing the centrifugal separation of the residual ammonia water, which helps to improve the oil removal efficiency of the residual ammonia water.

[0093] The lower part of the first separation chamber 1a and the second separation chamber 2a can be set to a cone that gradually becomes smaller from top to bottom, and the second port 1d and the second port 1d are set at the bottom of the cone to facilitate the discharge of tar and dust.

[0094] The upper part of the first separation chamber 1a and the second separation chamber 2a can be set to a cylindrical shape. After such a design, the remaining ammonia water entering the first port 1c and the fifth port 2c can rotate along the inner wall of the first separation chamber 1a and the second separation chamber 2a.

[0095] In some embodiments, the residual ammonia water oil removal device 100 also includes a heating device 29 disposed outside the first separation chamber 1a and the second separation chamber 2a. The heating device 29 heats the outer walls of the first separation chamber 1a and the second separation chamber 2a, and controls the temperature of the residual ammonia water in the first separation chamber 1a and the second separation chamber 2a to a set temperature, thereby ensuring the temperature required for oil-water separation of the residual ammonia water and the fluidity of the tar, which helps to improve the oil removal efficiency of the residual ammonia water. The heating source of the heating device 29 can be low-pressure steam, electric heating, etc., which is not limited in this application. The specific structure of the heating device 29 is known to those skilled in the art and will not be described in detail here.

[0096] In some embodiments, the temperature of the remaining ammonia water in the first separation chamber 1a and the second separation chamber 2a is controlled at 60°C to 75°C by a heating device 29.

[0097] In some embodiments, the residual ammonia water oil removal device 100 also includes an insulation layer arranged on the outer walls of the first tank 1 and the second tank 2. The setting of the insulation layer reduces the heat loss of the residual ammonia water in the first separation chamber 1a and the second separation chamber 2a, which helps to control the temperature of the residual ammonia water in the first separation chamber 1a and the second separation chamber 2a at a set temperature, thereby ensuring the temperature required for oil-water separation of the residual ammonia water and the fluidity of the tar.

[0098] In the present invention, the total residence time of the residual ammonia water in the first separation chamber 1a and the second separation chamber 2a is related to the residual ammonia water flow rate to be treated, the oil content at the inlet of the fifth tube 11 and the oil content requirements at the outlet of the sixth tube 14. Taking the residual ammonia water containing oil with a treatment flow rate of 25m3 / h, an oil content of 300mg / l at the inlet of the fifth tube 11 and an oil content of 50mg / l or less at the outlet of the sixth tube 14 as an example, the inlet pressure of the fifth tube 11 is 0.3MPa(g), the effective volume of the residual first separation chamber 1a and the second separation chamber 2a is 500m3, the total residence time of the residual ammonia water in the first separation chamber 1a and the second separation chamber 2a is 40h, and the residual ammonia water is heated by low-pressure steam on the outer wall of the first tank 1 and the second tank 2 and an insulation layer is provided to control the temperature at 65-70°C. After oil removal, the oil content of the residual ammonia water reaches 50mg / l, which meets the oil content requirements of the residual ammonia water in the ammonia steam system.

[0099] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0100] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0101] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A residual ammonia water deoiling device, characterized in that: include: A first tank (1) comprises a first separation chamber (1a) and a first port (1c), a second port (1d), a third port (1e) and a fourth port (1f) which are connected to the first separation chamber (1a); the third port (1e) is higher than the second port (1d); along the height direction of the first tank (1), the fourth port (1f) is located between the third port (1e) and the second port (1d); the first port (1c) is used to be connected to the outlet of the tar-ammonia water separation device (200) and is arranged along the tangential direction of the first tank (1); the second port (1d) and the third port (1e) are both used to be connected to a low-level storage tank (400); The second tank (2) comprises a second separation chamber (2a) and a fifth port (2c), a sixth port (2d), a seventh port (2e) and an eighth port (2f) which are connected to the second separation chamber (2a); the seventh port (2e) is higher than the sixth port (2d); along the height direction of the second tank (2), the eighth port (2f) is located between the seventh port (2e) and the sixth port (2d); the fifth port (2c) is connected to the fourth port (1f); the eighth port (2f) is used to be connected to a distillation device (300); the seventh port (2e) and the sixth port (2d) are both used to be connected to a low-level storage tank (400).

2. The excess ammonia water deoiling device according to claim 1, characterized in that: The first tank (1) further comprises a first heat preservation chamber (1b) and a ninth port (1g) and a tenth port (1h) connected to the first heat preservation chamber (1b); the tenth port (1h) is used to be connected to the distillation device (300); The second tank (2) further comprises a second heat preservation chamber (2b) and an eleventh port (2g) and a twelfth port (2h) communicating with the second heat preservation chamber (2b); The eleventh port (2g) is communicated with the eighth port (2f); the twelfth port (2h) is communicated with the ninth port (1g).

3. The excess ammonia water deoiling device according to claim 2, characterized in that: The second tank (2) further comprises a thirteenth port (2i) communicating with the second separation chamber (2a), and the first tank (1) further comprises a fourteenth port (1i) communicating with the first separation chamber (1a); The residual ammonia water oil removal device (100) further comprises: a first tube (3) connected to the fourth port (1f) and the thirteenth port (2i); a second tube (4) connected to the first port (1c) and the fifth port (2c); The third tube (5) and the fourth tube (6) are both connected to the first tube (3) and the second tube (4); A first valve (7) and a second valve (8), both installed on the first pipe (3), respectively located between the fourth port (1f) and the third pipe (5), and between the thirteenth port (2i) and the fourth pipe (6); The third valve (9) and the fourth valve (10) are installed on the third pipe (5) and the fourth pipe (6) respectively; a fifth tube (11), one end of which is connected to the tar-ammonia separation device (200) and the other end of which is connected to the second tube (4); The fifth valve (12) and the sixth valve (13) are both installed on the second pipe (4), and are respectively located between the third pipe (5) and the fifth pipe (11), and between the fourth pipe (6) and the fifth pipe (11).

4. The excess ammonia water deoiling device according to claim 3, characterized in that: The residual ammonia water oil removal device (100) further comprises: a sixth pipe (14), used for connecting to the distillation device (300); The seventh tube (15) and the eighth tube (16) are respectively connected to the tenth port (1h) and the sixth tube (14), and the twelfth port (2h) and the sixth tube (14); a ninth tube (17), connected to the seventh tube (15) and the eleventh port (2g); a tenth tube (18), connected to the eighth port (2f) and the ninth tube (17); a seventh valve (19), installed on the tenth pipe (18); an eleventh tube (21), connected to the ninth port (1g) and the eighth tube (16); A twelfth tube (22), connected to the fourteenth port (1i) and the eleventh tube (21); A ninth valve (23) is installed on the twelfth pipe (22).

5. The excess ammonia water deoiling device according to claim 4, characterized in that: The residual ammonia water oil removal device (100) further comprises: an eighth valve (20), installed on the ninth pipe (17) and located between the tenth pipe (18) and the seventh pipe (15); The tenth valve (24) is installed on the eleventh pipe (21) and is located between the eighth pipe (16) and the twelfth pipe (22).

6. The excess ammonia water deoiling device according to claim 4, characterized in that: The residual ammonia water oil removal device (100) further comprises: an eleventh valve (25), installed on the seventh pipe (15) and located between the ninth pipe (17) and the sixth pipe (14); The twelfth valve (28) is installed on the eighth pipe (16) and is located between the eleventh pipe (21) and the seventh pipe (15).

7. The excess ammonia water deoiling device according to claim 4, characterized in that: The residual ammonia water oil removal device (100) further comprises a pump (26) installed on the sixth pipe (14).

8. The excess ammonia water deoiling device according to any one of claims 1 to 7, characterized in that: The residual ammonia water oil removal device (100) further comprises a thirteenth pipe (27), one side of the thirteenth pipe (27) being connected to the low-level storage tank (400), and the other side of the thirteenth pipe (27) being respectively connected to the third port (1e), the second port (1d), the sixth port (2d) and the seventh port (2e).

9. The excess ammonia water deoiling device according to any one of claims 1 to 7, characterized in that: The fifth port (2c) is arranged along the tangential direction of the second tank (2).

10. The excess ammonia water deoiling device according to any one of claims 1 to 7, characterized in that: The residual ammonia water oil removal device (100) further comprises a heating device (29) arranged outside the first separation chamber (1a) and the second separation chamber (2a).

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