Concentrated and condensed water circulation system

Abstract

The utility model discloses a concentrated condensate water circulating system, relates to the technical field of non-ferrous metal metallurgy, and solves the problems that the leakage of titanium liquid possibly occurs in the conventional concentrated condensate water, and if the concentrated condensate water with leaked titanium liquid is introduced into a secondary washing water supply tank, the secondary washing water supply tank is polluted. The device comprises a concentration condenser, a liquid outlet of the concentration condenser communicates with a water return groove set through a main pipeline, the main pipeline communicates with liquid inlets of a first water return groove and a second water return groove through two branch pipes correspondingly, a conductivity detection assembly is arranged on the main pipeline, and first pneumatic valves are arranged on the two branch pipes correspondingly; the purpose of the utility model is to provide a water return tank group, the water return tank group comprises a first water return tank and a second water return tank, and when a conductivity meter detects titanium liquid leakage, concentrated condensate water is introduced into the first water return tank, so that the concentrated condensate water with leaked titanium liquid is prevented from being introduced into a secondary washing water supply tank to cause pollution of the secondary washing water supply tank.

Description

Technical Field

[0001] The utility model belongs to the technical field of nonferrous metal smelting, and in particular relates to a concentrated condensed water circulation system. Background Art

[0002] In the production process of titanium dioxide by sulfuric acid method, the intermediate product titanium oxysulfate solution needs to be concentrated by low-temperature evaporation to meet the process requirements. At present, my country's titanium dioxide industry basically uses traditional single-effect rising film vacuum evaporation equipment for concentration. This equipment consumes 2.0-3.0 tons of 0.3Mpa saturated steam for every ton of titanium dioxide product produced. Since the boiling point of titanium liquid is around 104-114℃ under normal pressure, and titanium liquid itself will hydrolyze above 80℃, if it is heated and evaporated at high temperature under normal pressure, the titanium liquid will hydrolyze early and generate colloidal particles suspended in the titanium liquid, causing difficulties in sedimentation and pressure filtration, which ultimately affects the titanium dioxide. The quality and output of the titanium liquid must be improved in order to avoid early hydrolysis. Therefore, the concentration of the titanium liquid must be carried out under vacuum. Because the single-effect concentration uses raw steam at 125-138°C, it is easy to cause local overheating of the titanium liquid. Therefore, a multi-stage preheating mode is generally used to preheat the dilute titanium liquid first, so that the temperature of the dilute titanium liquid can be steadily increased gradually. The concentrated condensed water produced in the traditional preheating process can be recycled and used to pass into the secondary washing water supply tank to supply water to the secondary washing tank and the secondary washing filter press. However, the concentrated condensed water may leak titanium liquid. If the concentrated condensed water with leaked titanium liquid is passed into the secondary washing water supply tank, it will cause pollution to the secondary washing water supply tank. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a concentrated condensed water circulation system, which provides a return water tank group, wherein the return water tank group includes a first return water tank and a second return water tank, and a conductivity meter and a pneumatic valve are provided on the pipeline connected to the liquid inlet of the first return water tank and the second return water tank. When there is no abnormality, the concentrated condensed water is passed into the second return water tank. When the conductivity meter detects leakage of titanium liquid, the concentrated condensed water is passed into the first return water tank, so as to prevent the concentrated condensed water with leaked titanium liquid from entering the second wash water supply tank, causing pollution of the second wash water supply tank.

[0004] The technical solution adopted by the utility model is as follows:

[0005] A concentrated condensed water circulation system comprises a concentrated condenser, wherein the liquid outlet of the concentrated condenser is connected to a return water tank group through a main pipeline, wherein the return water tank group comprises a first return water tank and a second return water tank, wherein the main pipeline is connected to the liquid inlets of the first return water tank and the second return water tank respectively through two branch pipes, wherein a conductivity detection component is arranged on the main pipeline, and first pneumatic valves are arranged on both of the two branch pipes.

[0006] By adopting the above technical scheme, the condensate inside the concentrated condenser enters the return water tank group through the pipeline, and the conductivity detection component is convenient for real-time detection of the conductivity inside the pipeline to detect whether the titanium liquid is leaking. When the conductivity detection component detects that the titanium liquid is leaking, the first pneumatic valve leading to the first return water tank is opened, and the pneumatic valve leading to the second return water tank is closed, and the condensate is passed into the first return water tank for subsequent treatment; when the conductivity detection component detects that the titanium liquid is not leaking, the first pneumatic valve leading to the first return water tank is closed, and the pneumatic valve leading to the second return water tank is opened, and the condensate is passed into the second return water tank.

[0007] Preferably, the pipe section of the main pipeline located between the concentrating condenser and the return water tank group is connected to the first liquid inlet of the hot water tank through a pipeline, and the conductivity detection component includes a first conductivity meter and a second conductivity meter, the first conductivity meter is located on the main pipeline between the concentrating condenser and the hot water tank, and the second conductivity meter is located on the main pipeline between the hot water tank and the return water tank group, and a third pneumatic valve is also provided on the main pipeline between the hot water tank and the return water tank group.

[0008] By adopting the above technical scheme, part of the condensate discharged from the concentrating condenser is discharged into the hot water tank through the pipe. The first conductivity meter is convenient for detecting the conductivity of the condensate inside the main pipe between the concentrating condenser and the hot water tank to detect whether the titanium liquid is leaking. The second conductivity meter is convenient for detecting the conductivity of the condensate inside the main pipe between the hot water tank and the return water tank group to detect whether the titanium liquid is leaking. When titanium liquid leakage is detected, the condensate can be discharged into the first return water tank in time.

[0009] Preferably, the liquid outlet of the hot water tank is connected to the liquid inlet of the evaporation tower through a pipeline, and the air outlet of the evaporation tower is connected to the air inlet of the concentrating condenser; the liquid outlet of the hot water tank is also connected to the liquid inlet of the first preheater through a pipeline, and the first preheater is used to perform the first stage preheating of the dilute titanic acid.

[0010] By adopting the above technical scheme, the high-temperature condensed water inside the hot water tank is transported to the inside of the evaporation tower. The evaporation tower heats the hot water inside the hot water tank and evaporates it into steam. The heated steam is passed into the concentration condenser through a pipeline for concentration treatment of the dilute titanium liquid. The high-temperature condensed liquid inside the hot water tank can also be passed into the first preheater for the first-stage preheating of the dilute titanic acid.

[0011] Preferably, the second water return tank is connected to the liquid inlet of the second wash water supply tank through a pipeline, and a heat exchanger is provided on the pipeline connecting the second water return tank and the second wash water supply tank.

[0012] By adopting the above technical scheme, the high-temperature condensate inside the second return water tank can be passed into the second wash water supply tank to provide washing water for the second washing liquid. The heat exchanger can cool the high-temperature condensate leading to the second wash water supply tank to avoid the high temperature of the condensate entering the second wash filter press. The filter cloth of the filter press is prone to hardening and aging due to long-term contact with high-temperature washing water.

[0013] Preferably, the liquid outlet of the secondary wash water supply tank is connected to the liquid inlet of the secondary wash filter press through a pipe, the liquid outlet of the secondary wash filter press is connected to the hot water inlet of the heat exchanger, and a second liquid inlet is also provided on the hot water tank, and the hot water outlet of the heat exchanger is connected to the second liquid inlet through a pipe.

[0014] By adopting the above technical scheme, the filtrate of the secondary filter press enters the heat exchanger to provide circulating hot water for the heat exchanger. The high-temperature hot water flowing out of the heat exchanger is passed into the hot water tank, which can also be used for the first stage preheating of dilute titanic acid, thereby recycling the heat source and reducing production costs.

[0015] Preferably, a thermometer is provided on the pipe section connecting the heat exchanger and the secondary wash water supply tank.

[0016] By adopting the above technical solution, the thermometer can detect the temperature of the cooling condensate flowing out of the heat exchanger in real time, thereby facilitating the detection and adjustment of the temperature of the cooling condensate.

[0017] Preferably, a drain port is provided on the first water return tank, and the drain port is connected to the subsequent treatment tank through a pipeline, and a second pneumatic valve is provided on the pipeline connecting the drain port and the subsequent treatment tank.

[0018] With the above technical solution, the second pneumatic valve is opened, and the high-temperature condensate contaminated by the titanium liquid leakage in the first return tank flows out from the drain port and flows out to the subsequent treatment tank.

[0019] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0020] A return water tank group is set up, which includes a first return water tank and a second return water tank. A conductivity meter and a pneumatic valve are provided on the pipes connected to the liquid inlets of the first return water tank and the second return water tank. When there is no abnormality, the concentrated condensed water is passed into the second return water tank. When the conductivity meter detects leakage of titanium liquid, the concentrated condensed water is passed into the first return water tank, so as to prevent the concentrated condensed water with leaked titanium liquid from entering the second wash water supply tank, causing pollution of the second wash water supply tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be described by way of examples with reference to the accompanying drawings, in which:

[0022] Figure 1It is a structural schematic diagram of a concentrated condensed water circulation system in the utility model.

[0023] Reference numerals

[0024] 1-concentration condenser, 2-first return water tank, 3-second return water tank, 4-heat exchanger, 5-second wash water supply tank, 6-second wash filter press, 7-hot water tank, 8-evaporation tower, 9-first conductivity meter, 10-second conductivity meter, 11-first pneumatic valve, 12-second pneumatic valve, 13-thermometer, 14-third pneumatic valve. DETAILED DESCRIPTION

[0025] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application usually described and indicated in the drawings here can be arranged and designed in various configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present application.

[0026] In the description of the embodiments of the present application, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or are the positions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0027] Combine the following Figure 1 The utility model is described in detail.

[0028] A concentrated condensed water circulation system, refer to the attached Figure 1, including a concentrating condenser 1, the liquid outlet of the concentrating condenser 1 is connected to a return water tank group through a main pipeline, the return water tank group includes a first return water tank 2 and a second return water tank 3, the main pipeline is connected to the liquid inlets of the first return water tank 2 and the second return water tank 3 respectively through two branch pipes, a conductivity detection component is arranged on the main pipeline, and a first pneumatic valve 11 is arranged on each of the two branch pipes, the condensate inside the concentrating condenser 1 enters the return water tank group through the pipeline, the conductivity detection component is convenient for real-time detection of the conductivity inside the pipeline to detect whether the titanium liquid is leaking, when the conductivity detection component detects that the titanium liquid is leaking, the first pneumatic valve 11 leading to the first return water tank 2 is opened, and the pneumatic valve leading to the second return water tank 3 is closed, and the condensate is passed into the first return water tank 2 for subsequent treatment; when the conductivity detection component detects that the titanium liquid is not leaking, the first pneumatic valve 11 leading to the first return water tank 2 is closed, and the pneumatic valve leading to the second return water tank 3 is opened, and the condensate is passed into the second return water tank 3.

[0029] In this embodiment, the pipe section of the main pipeline between the concentrating condenser 1 and the return water tank group is connected to the first liquid inlet of the hot water tank 7 through a pipeline. The conductivity detection component includes a first conductivity meter 9 and a second conductivity meter 10. The first conductivity meter 9 is located on the main pipeline between the concentrating condenser 1 and the hot water tank 7, and the second conductivity meter 10 is located on the main pipeline between the hot water tank 7 and the return water tank group. A third pneumatic valve 14 is also provided on the main pipeline between the hot water tank 7 and the return water tank group. Part of the condensate discharged from the concentrating condenser 1 is discharged into the hot water tank 7 through the pipeline. The first conductivity meter 9 is convenient for detecting the conductivity of the condensate inside the main pipeline between the concentrating condenser 1 and the hot water tank 7 to detect whether there is any leakage of the titanium liquid. The second conductivity meter 10 is convenient for detecting the conductivity of the condensate inside the main pipeline between the hot water tank 7 and the return water tank group to detect whether there is any leakage of the titanium liquid. When titanium liquid leakage is detected, the condensate can be discharged into the first return water tank 2 in time.

[0030] Among them, the probes of the first conductivity meter 9 and the second conductivity meter 10 are installed inside the main pipeline to facilitate real-time monitoring. The conductivity meter and the method of using it are existing technologies well known to those skilled in the art and will not be described in detail in this application.

[0031] In this embodiment, the liquid outlet of the hot water tank 7 is connected to the liquid inlet of the evaporation tower 8 through a pipeline, and the air outlet of the evaporation tower 8 is connected to the air inlet of the concentrating condenser 1; the liquid outlet of the hot water tank 7 is also connected to the liquid inlet of the first preheater through a pipeline, and the first preheater is used to perform the first-stage preheating of the dilute titanic acid. The high-temperature condensed water inside the hot water tank 7 is transported to the inside of the evaporation tower 8. The evaporation tower 8 heats the hot water inside the hot water tank 7 and evaporates it into steam. The heated steam is passed into the concentrating condenser 1 through a pipeline for the concentration treatment of the dilute titanium liquid. The high-temperature condensate inside the hot water tank 7 can also be passed into the first preheater for the first-stage preheating of the dilute titanic acid.

[0032] In this embodiment, the second return water tank 3 is connected with the liquid inlet of the second wash water supply tank 5 through a pipeline. A heat exchanger 4 is arranged on the pipeline connecting the second return water tank 3 and the second wash water supply tank 5. The high-temperature condensate inside the second return water tank 3 can be passed into the second wash water supply tank 5 to provide washing water for the second washing liquid. The heat exchanger 4 can cool the high-temperature condensate leading to the second wash water supply tank 5 to avoid the high temperature of the condensate entering the second wash filter press 6. The filter cloth of the filter press is prone to hardening and aging due to long-term contact with high-temperature washing water.

[0033] In this embodiment, the liquid outlet of the secondary wash water supply tank 5 is connected with the liquid inlet of the secondary wash filter press 6 through a pipeline, and the liquid outlet of the secondary wash filter press 6 is connected with the hot water inlet of the heat exchanger 4. A second liquid inlet is also provided on the hot water tank 7, and the hot water outlet of the heat exchanger 4 is connected with the second liquid inlet through a pipeline. The filtrate of the secondary wash filter press 6 enters the heat exchanger 4 to provide circulating hot water for the heat exchanger 4. The high-temperature hot water flowing out of the heat exchanger 4 is passed into the hot water tank 7, which can also be used for the first-stage preheating of the dilute titanic acid, thereby recycling the heat source and reducing the production cost.

[0034] In this embodiment, a thermometer 13 is provided on the pipe section connecting the heat exchanger 4 and the secondary wash water supply tank 5. The thermometer 13 is convenient for real-time detection of the temperature of the cooling condensate flowing out of the heat exchanger 4, thereby facilitating detection and adjustment of the temperature of the cooling condensate.

[0035] In this embodiment, a drain port is provided on the first water return tank 2, and the drain port is connected to the subsequent treatment tank through a pipeline. A second pneumatic valve 12 is provided on the pipeline connecting the drain port and the subsequent treatment tank. When the second pneumatic valve 12 is opened, the high-temperature condensate contaminated by the titanium liquid leakage in the first water return tank 2 flows out from the drain port to the subsequent treatment tank.

[0036] Working principle and usage process:

[0037] The condensate inside the concentrated condenser 1 enters the return water tank group through the pipeline. The conductivity detection component is convenient for real-time detection of the conductivity inside the pipeline to detect whether the titanium liquid is leaking. When the conductivity detection component detects that the titanium liquid is leaking, the first pneumatic valve 11 leading to the first return water tank 2 is opened, and the pneumatic valve leading to the second return water tank 3 is closed, and the condensate is passed into the first return water tank 2 for subsequent treatment; when the conductivity detection component detects that the titanium liquid is not leaking, the first pneumatic valve 11 leading to the first return water tank 2 is closed, and the pneumatic valve leading to the second return water tank 3 is opened, and the condensate is passed into the second return water tank 3.

[0038] It should be noted that:

[0039] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A concentrated condensed water circulation system, characterized in that: The invention comprises a concentrating condenser (1), wherein the liquid outlet of the concentrating condenser (1) is connected to a return water tank group via a main pipeline, wherein the return water tank group comprises a first return water tank (2) and a second return water tank (3), wherein the main pipeline is connected to the liquid inlets of the first return water tank (2) and the second return water tank (3) via two branch pipes, respectively, wherein the main pipeline is provided with a conductivity detection component, and the two branch pipes are both provided with a first pneumatic valve (11).

2. A concentrated condensed water circulation system according to claim 1, characterized in that: The pipe section of the main pipeline between the concentrating condenser (1) and the return water tank group is connected to the first liquid inlet of the hot water tank (7) through a pipeline. The conductivity detection assembly comprises a first conductivity meter (9) and a second conductivity meter (10). The first conductivity meter (9) is located on the main pipeline between the concentrating condenser (1) and the hot water tank (7). The second conductivity meter (10) is located on the main pipeline between the hot water tank (7) and the return water tank group. A third pneumatic valve (14) is also provided on the main pipeline between the hot water tank (7) and the return water tank group.

3. A concentrated condensed water circulation system according to claim 2, characterized in that: The liquid outlet of the hot water tank (7) is connected to the liquid inlet of the evaporation tower (8) through a pipeline, and the air outlet of the evaporation tower (8) is connected to the air inlet of the concentration condenser (1); the liquid outlet of the hot water tank (7) is also connected to the liquid inlet of the first preheater through a pipeline, and the first preheater is used to perform a first-stage preheating of the dilute titanic acid.

4. A concentrated condensed water circulation system according to claim 2, characterized in that: The second water return tank (3) is connected to the liquid inlet of the second wash water supply tank (5) through a pipeline, and a heat exchanger (4) is provided on the pipeline connecting the second water return tank (3) and the second wash water supply tank (5).

5. A concentrated condensed water circulation system according to claim 4, characterized in that: The liquid outlet of the secondary wash water supply tank (5) is connected to the liquid inlet of the secondary wash filter press (6) through a pipeline, and the liquid outlet of the secondary wash filter press (6) is connected to the hot water inlet of the heat exchanger (4). The hot water tank (7) is also provided with a second liquid inlet, and the hot water outlet of the heat exchanger (4) is connected to the second liquid inlet through a pipeline.

6. A concentrated condensed water circulation system according to claim 4, characterized in that: A thermometer (13) is provided on the pipe section connecting the heat exchanger (4) and the secondary wash water supply tank (5).

7. A concentrated condensed water circulation system according to any one of claims 1 to 6, characterized in that: The first water return tank (2) is provided with a water outlet, the water outlet is connected to a subsequent treatment tank via a pipeline, and a second pneumatic valve (12) is provided on the pipeline connecting the water outlet and the subsequent treatment tank.

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