Waste liquid recycling pretreatment device

Abstract

The utility model belongs to the technical field of process waste liquid treatment equipment, and particularly discloses a waste liquid recycling pretreatment device which comprises a heating box, a waste liquid barrel, a diaphragm pump and a heating unit, a supporting frame is arranged on one side of the heating box, a tray is in lap joint with the supporting frame, the waste liquid barrel is placed on the tray, and a first feeding port is formed in the top of the heating box. The waste liquid barrel is communicated with a guide pipe, an outlet of the guide pipe is located above the first feeding port, a filter screen is connected to the heating box, and an outlet pipeline is communicated between the heating box and the diaphragm pump. Viscous waste liquid which is industrially recycled in the waste liquid barrel is guided into the heating box from the first feeding opening through the guide pipe to be heated, the liquidity of the waste liquid is improved by heating the waste liquid through the heating unit, the viscosity of the heated waste liquid is reduced, and the liquidity is good; under the filtration of the filter screen, larger impurities in the viscous liquid are filtered out, so that the condition that the impurities in the waste liquid block a pipeline is reduced, and the waste liquid can be conveniently pumped to the rotary kiln by the diaphragm pump to be combusted and used.

Description

Technical Field

[0001] The utility model relates to the technical field of process waste liquid treatment equipment, in particular to a waste liquid recovery and reuse pretreatment device. Background Art

[0002] In the process of chemical production, some by-products are often produced. These by-products may be discharged in the form of waste liquid. Some of the waste liquids have high calorific value. The waste liquids to be treated are usually organic waste liquids whose main components are formaldehyde, acetic acid, trioxymethylene, benzene, dibasic acid monomethyl ester and coal tar, etc. Most of these waste liquids are aromatic compounds and sulfur-containing compounds, which are flammable. This type of waste liquid is relatively viscous, but it can be recycled and incinerated through the organic waste liquid treatment process.

[0003] The organic waste liquid treatment process is to extract the waste liquid that needs to be incinerated and reused directly from the waste liquid barrel to the waste liquid pipeline through a diaphragm pump, then atomize the waste liquid through a waste liquid spray gun, and spray it into a rotary kiln for high-temperature incineration disposal.

[0004] However, in the process of waste liquid disposal, due to the complex composition and high kinematic viscosity of the waste liquid, it is difficult for the diaphragm pump to pump the viscous waste liquid. In addition, the waste liquid contains more impurities, which can easily clog the pipeline and spray gun, which greatly limits the efficiency of waste liquid disposal. Utility Model Content

[0005] The utility model aims to provide a waste liquid recycling and reuse pretreatment device to solve the problem that when the prior art treats process organic waste liquid containing impurities and being viscous, the waste liquid has complex composition, kinematic viscosity, is difficult to pump, and is easy to clog the pipeline, resulting in low efficiency of waste liquid recycling and disposal.

[0006] In order to achieve the above-mentioned purpose, the basic scheme provided by the utility model is: a waste liquid recovery and reuse pretreatment device, comprising a heating box, a waste liquid barrel, a diaphragm pump and a heating unit for heating the viscous waste liquid in the waste liquid barrel, a support frame is provided on one side of the heating box, a tray is overlapped on the support frame, the waste liquid barrel is placed on the tray, a first feed port is opened on the top of the heating box, the waste liquid barrel is connected to a conduit, the outlet of the conduit is located above the first feed port, a filter is connected to the heating box located at the first feed port, and an outlet pipeline is connected between the heating box and the diaphragm pump.

[0007] The principle and beneficial effect of the utility model are as follows: the utility model introduces the viscous waste liquid recycled from industry in the waste liquid barrel into the heating box from the first feed port through a conduit for heating, and heats the waste liquid through the heating unit to improve the fluidity of the waste liquid. The viscosity of the heated waste liquid is reduced and the fluidity is good. At the same time, under the filtration of the filter screen, larger impurities in the viscous liquid are filtered out, reducing the situation of impurities in the waste liquid clogging the pipeline, thereby facilitating the diaphragm pump to pump the waste liquid to the rotary kiln for combustion.

[0008] Solution 2, which is the preferred basic solution, the heating unit includes a steam inlet pipeline and a heating coil, the steam inlet pipeline is connected to the heating box, the heating coil is fixed in the heating box, the bottom of the heating box is connected to a condensate pipeline, the steam inlet pipeline, the heating coil and the condensate pipeline are connected in sequence, a steam regulating valve is provided on the steam inlet pipeline, a steam trap is provided on the condensate pipeline, and the steam trap is connected to a collection box storing condensate;

[0009] By setting up a heating coil and introducing steam into the heating coil through a steam inlet pipeline, the heating coil increases the temperature in the heating box. The viscous liquid in the waste liquid barrel enters the heating box and contacts the heating coil, and its fluidity gradually improves, making it easier for the diaphragm pump to pump the waste liquid in the heating box to the rotary kiln.

[0010] Option three is a preferred option of option two. The filter is a basket filter, and the basket filter is overlapped on the heating box. By selecting the basket filter, it is convenient for operators to take out and put the filter for convenient cleaning.

[0011] Scheme 4, which is the preferred basic scheme, the top of the heating box is connected to an air collecting hood, the air collecting hood is arranged above the first feed inlet, the top of the air collecting hood is connected to a branch pipe, and the side of the branch pipe away from the heating box is connected to the waste liquid fan pipeline of the rotary kiln;

[0012] By installing a gas collecting hood on the top of the heating box, the branch pipe connected to the gas collecting hood leads to the waste liquid fan pipeline of the rotary kiln. The fan creates a negative pressure in the pipeline, and the organic gas generated after the waste liquid is heated is drawn from the first feed port to the gas collecting hood and the branch pipe, and then drawn into the rotary kiln for high-temperature incineration.

[0013] Option 5 is a preferred option of Option 2. A temperature sensor is connected to the heating box. The heating temperature is selected according to the different characteristics of the viscous waste liquid, and the steam regulating valve is controlled to control the flow rate of steam and the amount of steam entering the heating coil to achieve the change of the heating temperature of the waste liquid.

[0014] Option six is ​​a preferred option of option four, in which a filter is connected to the outlet pipeline between the diaphragm pump and the heating box; the heated waste liquid is filtered again through the filter to avoid clogging the outlet pipeline or the diaphragm pump.

[0015] Option seven, which is a preferred embodiment of Option six, is that the outer wall of the heating box is connected with a staircase; by providing the staircase, an operator can climb the staircase to open the valve on the conduit or take out the filter for cleaning.

[0016] Option eight is a preferred embodiment of Option four, in which a reinforcement ring is connected to the outer wall of the heating box; by providing the reinforcement ring, the outer wall of the heating box is reinforced to make it more stable.

[0017] Solution 9, which is a preferred embodiment of Solution 7, a second feed inlet is provided on the side wall of the heating box, and a movable plate is hingedly connected to the heating box at the second feed inlet;

[0018] The operator can manually open the movable plate, connect one end of a pipeline to the conduit of the waste liquid barrel, and the other end of the pipeline passes through the movable plate and extends into the heating box from the second feed port. The viscous liquid in the waste liquid barrel is pumped into the heating box through the pipeline by the pump body, and clean water can also be pumped into the second feed port to clean the inside of the heating box. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a stereoscopic diagram of a waste liquid recycling and reuse pretreatment device of the utility model;

[0020] Figure 2 This is a front view of a waste liquid recycling and reuse pretreatment device of the utility model;

[0021] Figure 3 It is a partial cross-sectional view of a waste liquid recovery and reuse pretreatment device of the utility model. DETAILED DESCRIPTION

[0022] The utility model is further described in detail below through specific implementation methods:

[0023] The figure marks in the drawings of the specification include: 1. heating box; 2. waste liquid barrel; 3. support frame; 4. tray; 5. first feed port; 6. gas collecting hood; 7. second feed port; 8. filter screen; 9. conduit; 10. steam inlet pipeline; 11. condensate pipeline; 12. heating coil; 13. steam trap; 14. outlet pipeline; 15. filter; 16. diaphragm pump; 17. temperature sensor; 18. step; 19. reinforcement ring; 20. movable plate; 21. steam regulating valve; 22. branch pipe; 23. slag discharge port.

[0024] like Figures 1 to 3As shown: a waste liquid recovery and reuse pretreatment device, including a heating box 1, a waste liquid barrel 2, a diaphragm pump 16 and a heating unit, the heating box 1 is placed on the ground, a support frame 3 is placed on one side of the heating box 1, a pallet 4 is overlapped on the top of the support frame 3, the waste liquid barrel 2 is placed on the pallet 4, the pallet 4 is provided with a forklift hole that can be inserted into the forklift frame, a first feed port 5 is provided on the top of the heating box 1, a conduit 9 is connected to the side of the waste liquid barrel 2 close to the first feed port 5, the outlet of the conduit 9 is located above the first feed port 5, a valve is provided on the conduit 9, an air collecting hood 6 is bolted to the heating box 1 located at the first feed port 5, the air collecting hood 6 is in an inverted cone shape, the top of the air collecting hood 6 is connected to a branch pipe 22, and the branch pipe 22 is connected to the waste liquid blower pipeline of the rotary kiln.

[0025] A second feed port 7 is provided on the side wall of the heating box 1, and a movable plate 20 is hinged on the side wall of the heating box 1 located at the second feed port 7. A reinforcement ring 19 is fixedly connected to the middle of the outer wall of the heating box 1, and a step 18 is provided on one side of the reinforcement ring 19. One end of the step 18 is bolted to the outer wall of the heating box 1.

[0026] The heating unit includes a steam inlet pipeline 10 and a heating coil 12. The heating coil 12 is arranged inside the heating box 1. The height of the heating coil 12 is about 1 / 2 of the total height of the heating box 1. One side of the heating box 1 is connected with a condensate pipeline 11. The steam inlet pipeline 10 is fixedly passed through the interior of the heating box 1 and is connected with one end of the heating coil 12. The other end of the heating coil 12 is connected with the condensate pipeline 11. A steam trap 13 is arranged on the condensate pipeline 11. The steam trap 13 is located outside the heating box 1. The condensate pipeline 11 is free from the steam inlet pipeline 10. The end is connected to a collection box for temporarily storing condensed water for production reuse; a filter screen 8 is inclined in the heating box 1, and the filter screen 8 adopts a basket filter screen 8. The filter screen 8 is overlapped on the top of the heating box 1 at the first feed port 5. A slag discharge port 23 is opened on the side wall of the heating box 1. The slag discharge port 23 is set at the bottom of the filter screen 8 in the heating box 1. When it is not cleaned, the slag discharge port 23 is blocked; when cleaning the filter screen 8, the filter screen 8 can be directly lifted from the first feed port 5, or impurities near the bottom of the filter screen 8 can be scraped out from the slag discharge port 23 with a scraper or other tools.

[0027] A steam regulating valve 21 is provided on the steam inlet pipeline 10 located outside the heating box 1. A temperature sensor 17 is provided inside the heating box 1. The temperature sensor 17 is an ELL-WVT non-contact temperature sensor. The bottom of the heating box 1 is connected with an outlet pipeline 14. A diaphragm pump 16 is provided on one side of the heating box 1. A filter 15 is provided between the heating box 1 and the diaphragm pump 16. The filter 15 is a Y-type filter. The outlet pipeline 14 is connected with the filter 15 and then connected to the inlet of the diaphragm pump 16. The outlet of the diaphragm pump 16 is connected to the rotary kiln, and the waste liquid is sent into the rotary kiln for high-temperature incineration. A valve is provided on the outlet pipeline 14.

[0028] The implementation method of this embodiment is as follows: when in use, the forklift frame of the forklift is first inserted into the pallet 4, and the waste liquid barrel 2 and the pallet 4 are moved together and placed on the top of the support frame 3. At this time, the conduit 9 of the waste liquid barrel 2 is aligned with the first feed port 5 and is located above the filter screen 8. The valve on the steam inlet pipeline 10 and the drain valve 13 on the condensate pipeline 11 are opened, and the steam enters the heating coil 12 through the steam inlet pipeline 10. The operator also opens the valve on the conduit 9, and the viscous liquid in the waste liquid barrel 2 enters the heating box 1 through the filter screen 8. The viscous liquid has better fluidity after being heated by the steam heat in the heating coil 12. The temperature of the waste liquid in the heating box 1 is detected at any time by the temperature sensor 17. When the temperature is appropriate, the steam regulating valve 21 on the steam inlet pipeline 10 is manually closed.

[0029] When the viscous liquid enters the heating box 1 to a height of about 1 / 2-2 / 3, the valve on the outlet pipeline 14 is opened and the diaphragm pump 16 is started. The viscous liquid is pumped out from the outlet pipeline 14 by the diaphragm pump 16, and the waste liquid is atomized by the waste liquid spray gun and sprayed into the rotary kiln for high-temperature incineration and auxiliary combustion.

[0030] When the heating is completed, close the diaphragm pump 16, the valve on the outlet pipeline 14, the steam regulating valve 21 on the steam inlet pipeline 10, the steam trap 13 on the condensate and the valve of the conduit 9, lift the filter 8 out of the first feed port 5 to clean the impurities and waste residue on the filter 8, or open the slag discharge port 23 and scrape out the residue on the filter 8 with a scraper or other tools.

[0031] The above is only an embodiment of the utility model, and the common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the utility model, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A waste liquid recycling pretreatment device, characterized in that: The invention comprises a heating box (1), a waste liquid barrel (2), a diaphragm pump (16) and a heating unit for heating viscous waste liquid in the waste liquid barrel (2); a support frame (3) is provided on one side of the heating box (1); a tray (4) is overlapped on the support frame (3); the waste liquid barrel (2) is placed on the tray (4); a first feed port (5) is provided on the top of the heating box (1); the waste liquid barrel (2) is connected to a conduit (9); the outlet of the conduit (9) is located above the first feed port (5); a filter screen (8) is connected to the heating box (1) located at the first feed port (5); an outlet pipeline (14) is connected between the heating box (1) and the diaphragm pump (16).

2. A waste liquid recycling pretreatment device according to claim 1, characterized in that: The heating unit comprises a steam inlet pipeline (10) and a heating coil (12); the steam inlet pipeline (10) is connected to a heating box (1); the heating coil (12) is fixedly connected to the heating box (1); the bottom of the heating box (1) is connected to a condensate pipeline (11); the steam inlet pipeline (10), the heating coil (12) and the condensate pipeline (11) are connected in sequence; a steam regulating valve (21) is provided on the steam inlet pipeline (10); a steam trap (13) is provided on the condensate pipeline (11); and the steam trap (13) is connected to a collection box storing condensate.

3. A waste liquid recycling pretreatment device according to claim 2, characterized in that: The filter screen (8) is a basket filter screen, and the basket filter screen is overlapped on the heating box (1).

4. A waste liquid recycling pretreatment device according to claim 1, characterized in that: The top of the heating box (1) is connected to an air collecting hood (6), and the air collecting hood (6) is arranged above the first feed port (5). The top of the air collecting hood (6) is connected to a branch pipe (22), and the side of the branch pipe (22) away from the heating box (1) is connected to the waste liquid fan pipeline of the rotary kiln.

5. The waste liquid recycling pretreatment device according to claim 2 is characterized in that: A temperature sensor (17) is connected inside the heating box (1).

6. A waste liquid recycling pretreatment device according to claim 4, characterized in that: A filter (15) is connected to the outlet pipeline (14) between the diaphragm pump (16) and the heating box (1).

7. A waste liquid recycling pretreatment device according to claim 6, characterized in that: The outer wall of the heating box (1) is connected with a step (18).

8. The waste liquid recycling pretreatment device according to claim 4 is characterized in that: The outer wall of the heating box (1) is connected with a reinforcement ring (19).

9. A waste liquid recycling pretreatment device according to claim 7, characterized in that: A second feed inlet (7) is provided on the side wall of the heating box (1), and a movable plate (20) is hingedly connected to the heating box (1) at the second feed inlet (7).

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