Resource recycling device for desulfurization waste liquid

Abstract

The utility model discloses a desulfuration waste liquid resource recycling device which comprises a neutralizing cylinder used in waste liquid neutralizing operation in the desulfuration waste liquid resource recycling step, a ball valve discharging pipe is installed on the lower surface of the neutralizing cylinder in a communicating mode, a first electric push rod is rotatably installed on the outer surface of the neutralizing cylinder, and a piston rod of the first electric push rod is rotatably installed at one end of a top cover. The top cover is rotatably mounted at one end of the butt-joint plate, the butt-joint plate is fixedly mounted at one end of the outer surface of the neutralizing cylinder, a pH value detection mechanism is fixedly mounted in the neutralizing cylinder, and a pH neutralizing mechanism is fixedly mounted at one end of the outer surface of the neutralizing cylinder. According to the utility model, the pH value of the waste liquid is gradually adjusted through the operation of quantitatively and repeatedly adding alkaline substances, the violent reaction caused by one-time mass addition is avoided, and the times of quantitative addition can be adjusted according to the change condition by monitoring the pH value of the waste liquid in real time after each time of addition, so that the pH value is ensured to finally reach an ideal range.

Description

Technical Field

[0001] The utility model belongs to the technical field of waste liquid recovery equipment, in particular to a desulfurization waste liquid resource recovery device. Background Art

[0002] The desulfurization waste liquid resource recovery device is mainly used to treat the waste liquid in industrial production and turn it into treasure. Industrial processes, especially coal-fired power plants, steel mills and petrochemical plants, produce a large amount of sulfur-containing waste liquid, which seriously pollutes the environment. In order to reduce pollution, the sulfur-containing waste liquid needs to be recycled.

[0003] The desulfurization waste liquid resource recovery device in the prior art manually adds alkaline substances (such as lime or sodium hydroxide) to the waste liquid to neutralize the acidic substances and make the pH value reach neutral. In the process of adding alkaline substances, personnel cannot accurately control the amount of alkaline substances added according to the pH value of the waste liquid; insufficient addition will cause the pH value of the waste liquid to increase, resulting in excessive alkalinity when the waste liquid is discharged, or causing the acidic components in the waste liquid to be unable to be completely neutralized. Utility Model Content

[0004] The utility model aims to provide a desulfurization waste liquid resource recovery device to solve the technical problem in the above background technology that in the process of adding alkaline substances, the amount of alkaline substances added cannot be accurately controlled according to the pH value of the waste liquid.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A desulfurization waste liquid resource recovery device comprises a neutralization cylinder used in the waste liquid neutralization operation in the desulfurization waste liquid resource recovery step, the lower surface of the neutralization cylinder is connected to a ball valve discharge pipe, a first electric push rod is rotatably installed on the outer surface of the neutralization cylinder, the piston rod of the first electric push rod is rotatably installed at one end of a top cover, the top cover is rotatably installed at one end of a docking plate, and the docking plate is fixedly installed at one end of the outer surface of the neutralization cylinder.

[0007] Among them, a pH value detection mechanism is fixedly installed in the neutralization cylinder, and a pH neutralization mechanism is fixedly installed at one end of the outer surface of the neutralization cylinder, and signals of the pH value detection mechanism and the pH neutralization mechanism are transmitted to each other.

[0008] As a further solution of the utility model, the pH value detection mechanism includes a float liquid level sensor and a pH sensor. The float liquid level sensor slides in the neutralization cylinder, and the pH sensor is fixedly installed at the bottom of the neutralization cylinder. The signal transmitting ends of the float liquid level sensor and the pH sensor are both connected to the signal receiving ends of the controller, and the controller is fixedly installed on the outer surface of the neutralization cylinder.

[0009] As a further solution of the utility model, the models of the float liquid level sensor, the pH sensor and the controller are LS-700, Durafet III and SITRANS CU 240 respectively.

[0010] As a further solution of the utility model, the pH neutralization mechanism includes a connecting cylinder, which is connected and installed at one end of the outer surface of the neutralization cylinder, a storage cylinder is fixedly installed on the upper surface of the connecting cylinder, and a guide tube is connected and installed on the lower surface of the storage cylinder. The guide tube is connected and connected to the feed port, and the feed port is opened on the upper surface of the connecting cylinder.

[0011] The storage cylinder can store lime (Ca(OH)2), sodium hydroxide (NaOH) or other alkaline substances, which are selectively filled according to the desulfurization waste liquid generated by the factory.

[0012] As a further solution of the utility model, a second electric push rod is fixedly installed in the connecting cylinder, and a square leakage cylinder is fixedly installed at one end of the piston rod of the second electric push rod. The square leakage cylinder is slidably installed in the connecting cylinder. The square leakage cylinder can be flush with the feed port so that the neutralization material in the storage cylinder can be filled into the square leakage cylinder.

[0013] Wherein, the electric control end of the second electric push rod is controlled by the controller.

[0014] As a further solution of the utility model, a blocking plate is fixedly installed at one end of the square leakage cylinder, and the blocking plate is slidably attached to the upper surface of the connecting cylinder so that it can seal and block the feed inlet.

[0015] Compared with the prior art, the beneficial effects of the desulfurization waste liquid resource recovery device of the utility model are:

[0016] When recycling waste liquid, the waste liquid can be filled into a neutralization cylinder. The pH value detection mechanism in the neutralization cylinder detects the volume and pH value of the waste liquid in the neutralization cylinder. The pH value detection mechanism transmits the data of the volume and pH value of the waste liquid to the pH neutralization mechanism. The pH neutralization mechanism automatically adds alkaline substances (such as lime or sodium hydroxide) to the neutralization cylinder in a quantitative manner for multiple times to neutralize the acidic substances, so that the pH value of the waste liquid reaches neutrality. The neutral waste liquid is detected by the pH value detection mechanism and the pH neutralization mechanism stops adding alkaline substances. By adding alkaline substances in a quantitative manner multiple times, the pH value of the waste liquid can be gradually adjusted to avoid violent reactions caused by large-scale additions at one time, making the pH value control more accurate and stable. In addition, the pH value of the waste liquid can be monitored in real time after each addition, so that the number of quantitative additions can be adjusted according to changes to ensure that the pH value eventually reaches the ideal range. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. Obviously, the drawings described below are only examples of the embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the first electric push rod and the top cover in the embodiment of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the pH value detection mechanism in the embodiment of the utility model;

[0021] Figure 4 It is a structural schematic diagram of the pH neutralization mechanism in the embodiment of the utility model.

[0022] Figure numerals: 1. neutralization cylinder; 101. ball valve discharge pipe; 102. docking plate; 2. first electric push rod; 201. top cover; 3. pH value detection mechanism; 301. float liquid level sensor; 302. pH sensor; 303. controller; 4. pH neutralization mechanism; 401. storage cylinder; 402. guide tube; 403. connecting cylinder; 404. second electric push rod; 405. square leakage cylinder; 406. blocking plate; 407. feed port. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the embodiments of the present invention are further described in detail in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0024] In the description of the embodiments of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the embodiments of the present invention.

[0025] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, an integral connection, or a detachable connection; it can be the internal connection of two components; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0026] See also Figure 1-Figure 2 As shown, an embodiment of the utility model is a desulfurization waste liquid resource recovery device, including a neutralization cylinder 1 used in the waste liquid neutralization operation in the desulfurization waste liquid resource recovery step, the lower surface of the neutralization cylinder 1 is connected to a ball valve discharge pipe 101, and a first electric push rod 2 is rotatably installed on the outer surface of the neutralization cylinder 1, and the piston rod of the first electric push rod 2 is rotatably installed at one end of the top cover 201, and the top cover 201 is rotatably installed at one end of the docking plate 102, and the docking plate 102 is fixedly installed at one end of the outer surface of the neutralization cylinder 1.

[0027] A pH value detection mechanism 3 is fixedly installed in the neutralization cylinder 1 , and a pH neutralization mechanism 4 is fixedly installed at one end of the outer surface of the neutralization cylinder 1 . The pH value detection mechanism 3 and the pH neutralization mechanism 4 transmit signals to each other.

[0028] When recycling waste liquid, the waste liquid can be filled into the neutralization cylinder 1, and the pH value detection mechanism 3 in the neutralization cylinder 1 will detect the volume and pH value of the waste liquid in the neutralization cylinder 1, and then the pH value detection mechanism 3 will transmit the data of the waste liquid volume and pH value to the pH neutralization mechanism 4, and the pH neutralization mechanism 4 will automatically add alkaline substances (such as lime or sodium hydroxide) to the neutralization cylinder 1 quantitatively for multiple times to neutralize the acidic substances, so that the pH value of the waste liquid reaches neutrality, and the neutral waste liquid will also be detected by the pH value detection mechanism 3 and the pH neutralization mechanism 4 will stop adding alkaline substances. Through this quantitative and multiple addition of alkaline substances, the pH value of the waste liquid can be gradually adjusted to avoid violent reactions caused by a large amount of one-time addition, making the pH value control more accurate and stable, and after each addition, the pH value of the waste liquid can be monitored in real time, so that the number of quantitative additions can be adjusted according to the changes, to ensure that the pH value finally reaches the ideal range.

[0029] See also Figure 3-Figure 4 As shown, the pH value detection mechanism 3 includes a float liquid level sensor 301 and a pH sensor 302. The float liquid level sensor 301 slides in the neutralization cylinder 1, and the pH sensor 302 is fixedly installed on the bottom of the neutralization cylinder 1. The signal transmitting ends of the float liquid level sensor 301 and the pH sensor 302 are both connected to the signal receiving ends of the controller 303, and the controller 303 is fixedly installed on the outer surface of the neutralization cylinder 1.

[0030] The models of the float liquid level sensor 301, the pH sensor 302 and the controller 303 are LS-700, Durafet III and SITRANS CU 240 respectively.

[0031] The pH neutralization mechanism 4 includes a connecting cylinder 403, which is connected and installed at one end of the outer surface of the neutralization cylinder 1. A storage cylinder 401 is fixedly installed on the upper surface of the connecting cylinder 403, and a guide tube 402 is connected and installed on the lower surface of the storage cylinder 401. The guide tube 402 is connected and communicated with a feed port 407, and the feed port 407 is opened on the upper surface of the connecting cylinder 403.

[0032] The storage cylinder 401 can store lime Ca(OH)2, sodium hydroxide NaOH or other alkaline substances, which are selectively filled according to the desulfurization waste liquid generated by the factory.

[0033] A second electric push rod 404 is fixedly installed in the connecting cylinder 403, and a square leakage cylinder 405 is fixedly installed at one end of the piston rod of the second electric push rod 404. The square leakage cylinder 405 is slidably installed in the connecting cylinder 403. The square leakage cylinder 405 can be flush with the feed port 407 so that the neutralization material in the storage cylinder 401 can be filled into the square leakage cylinder 405.

[0034] The electric control end of the second electric push rod 404 is controlled by the controller 303 .

[0035] A blocking plate 406 is fixedly installed at one end of the square leakage tube 405, and the blocking plate 406 is slidably attached to the inner upper surface of the connecting tube 403, so that it can seal and block the feed port 407.

[0036] When the waste liquid is recycled, the waste liquid can be filled into the neutralization cylinder 1, and the float in the float level sensor 301 in the neutralization cylinder 1 will float together according to the height of the waste liquid, and at the same time, the pH sensor 302 inside the neutralization cylinder 1 will also detect the pH value of the waste liquid, and the float level sensor 301 and the pH sensor 302 will send the volume and pH value of the waste liquid to the controller 303, and the controller 303 will calculate the amount of alkaline substances required according to the concentration and volume of the acidic substances in the waste liquid, and the controller 303 can start the second electric push rod 404 multiple times to push the square funnel 405 at one end of the piston rod to slide out of the connecting cylinder 403, and the blocking plate 406 at the rear end of the square funnel 405 will block the feed port 404. 07 blocking can make the quantitative alkaline substance in the connecting cylinder 403 spill into the neutralization cylinder 1, and then the second electric push rod 404 will pull the square leakage cylinder 405 back into the connecting cylinder 403 and be flush with the feed port 407, so that the alkaline substance in the storage cylinder 401 can be introduced into the feed port 407 through the guide tube 402 and enter the square leakage cylinder 405 for quantitative storage, so that the second electric push rod 404 can push it into the neutralization cylinder 1 for filling again, realizing the operation of quantitative multiple addition of alkaline substances, and can gradually adjust the pH value of the waste liquid. Each time the alkaline substance is added, the pH value of the waste liquid will be monitored in real time by the pH sensor 302, so that it can adjust the number of quantitative additions according to the changes, to ensure that the pH value finally reaches the ideal range.

[0037] Through the above scheme, the pH value can eventually reach the ideal range. After the pH value of the waste liquid reaches the recovery range, the neutralized waste liquid can be fed into the evaporator through the ball valve discharge pipe 101 at the lower end of the neutralization cylinder 1 to heat the waste liquid for evaporation and concentrate the valuable substances therein. The evaporated water vapor is condensed and recovered through the condenser to reduce water waste. The waste liquid is sent to the crystallization tank to crystallize the concentrated waste liquid at low temperature to precipitate valuable solid substances such as calcium sulfate, etc., which are added into the centrifuge to separate the crystallized solid substances and liquid, and the separated solid substances are dried by the dryer to make them recyclable products.

[0038] In summary: the embodiment of the utility model can gradually adjust the pH value of the waste liquid by adding alkaline substances quantitatively and multiple times, avoid violent reactions caused by large-scale additions at one time, make the pH value control more accurate and stable, and after each addition, the pH value of the waste liquid can be monitored in real time, so that the number of quantitative additions can be adjusted according to the changes, ensuring that the pH value finally reaches the ideal range.

[0039] The above shows and describes the basic principles of the present invention. The above are only preferred embodiments of the present invention and are not intended to limit the present invention. The above embodiments and descriptions in the specification are only intended to illustrate the principles of the present invention. Without departing from the scope of the present invention, any modifications, equivalent substitutions and improvements made within the spirit and scope of the present invention should be included in the protection scope of the present invention.

Claims

1. A desulfurization waste liquid resource recovery device, characterized in that: It comprises a neutralization cylinder (1) used in the waste liquid neutralization operation in the desulfurization waste liquid resource recovery step, the lower surface of the neutralization cylinder (1) is connected to a ball valve discharge pipe (101), a first electric push rod (2) is rotatably mounted on the outer surface of the neutralization cylinder (1), the piston rod of the first electric push rod (2) is rotatably mounted on one end of a top cover (201), the top cover (201) is rotatably mounted on one end of a docking plate (102), and the docking plate (102) is fixedly mounted on one end of the outer surface of the neutralization cylinder (1); A pH value detection mechanism (3) is fixedly installed inside the neutralization cylinder (1), and a pH neutralization mechanism (4) is fixedly installed on one end of the outer surface of the neutralization cylinder (1), and signals are transmitted between the pH value detection mechanism (3) and the pH neutralization mechanism (4).

2. A desulfurization waste liquid resource recovery device according to claim 1, characterized in that: The pH value detection mechanism (3) comprises a float liquid level sensor (301) and a pH sensor (302); the float liquid level sensor (301) slides in the neutralization cylinder (1); the pH sensor (302) is fixedly mounted on the bottom of the neutralization cylinder (1); the signal transmitting ends of the float liquid level sensor (301) and the pH sensor (302) are both connected to the signal receiving end of the controller (303); and the controller (303) is fixedly mounted on the outer surface of the neutralization cylinder (1).

3. A desulfurization waste liquid resource recovery device according to claim 2, characterized in that: The models of the float liquid level sensor (301), pH sensor (302) and controller (303) are LS-700, Durafet III and SITRANSCU 240 respectively.

4. A desulfurization waste liquid resource recovery device according to claim 3, characterized in that: The pH neutralization mechanism (4) comprises a connecting cylinder (403), wherein the connecting cylinder (403) is connected and mounted on one end of the outer surface of the neutralization cylinder (1), a storage cylinder (401) is fixedly mounted on the upper surface of the connecting cylinder (403), and a guide tube (402) is connected and mounted on the lower surface of the storage cylinder (401), wherein the guide tube (402) is connected and communicated with a feed port (407), and the feed port (407) is opened on the upper surface of the connecting cylinder (403).

5. A desulfurization waste liquid resource recovery device according to claim 4, characterized in that: A second electric push rod (404) is fixedly installed in the connecting cylinder (403), and a square leakage cylinder (405) is fixedly installed at one end of the piston rod of the second electric push rod (404). The square leakage cylinder (405) is slidably installed in the connecting cylinder (403). The square leakage cylinder (405) can be flush with the feed port (407) so that the neutralization material in the storage cylinder (401) can be filled into the square leakage cylinder (405); Wherein, the electric control end of the second electric push rod (404) is controlled by the controller (303).

6. A desulfurization waste liquid resource recovery device according to claim 5, characterized in that: A blocking plate (406) is fixedly mounted on one end of the square leakage cylinder (405), and the blocking plate (406) is slidably attached to the inner upper surface of the connecting cylinder (403) so as to seal and block the feed port (407).

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