Esterification water waste gas collecting and recycling device

Abstract

The utility model discloses an esterification water waste gas collecting and recycling device which comprises an esterification water storage tank, a tail gas condenser and a water storage tank, the esterified water storage tank is communicated with one end of the tail gas condenser through a first condensate pipeline, and the other end of the tail gas condenser is communicated with the middle lower part of the water storage tank through an inlet pipeline; the water storage tank is communicated with a demineralized water system through a demineralized water pipeline; the middle part of the water storage tank is communicated with the esterification water storage tank through a second condensate pipeline, and the water storage tank is communicated with a heating medium tail gas pipeline. The esterification water waste gas collecting and recycling device disclosed by the utility model is convenient to use, through the matching arrangement of the esterification water storage tank, the tail gas condenser and the water storage tank, the waste gas which is not condensed in the esterification water storage tank before forms waste water containing organic matters through water passing, and the waste water overflows back to the esterification water storage tank again, so that steam stripping raw materials are increased, and the production efficiency is improved. Therefore, raw material yield increase of the pretreatment device is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of collection and utilization of esterification water waste gas, and in particular to a device for collecting and reusing esterification water waste gas. Background Art

[0002] Esterified water is wastewater with a high organic content that is condensed from the waste gas generated by the polyester unit during the polymerization process. After the esterified water is transported from the polyester unit to the esterified water storage tank, because the temperature in the esterified water storage tank is above 35 degrees, some of the waste gas will volatilize in the esterified water storage tank, condense into liquid through the condenser on the esterified water storage tank in the unit, and flow back into the storage tank. However, in summer, when the temperature in the tank reaches above 40 degrees, the degree of volatility is greater, which will cause part of the waste gas to be unable to condense and directly enter the tail gas pipeline to enter the furnace for combustion. Because the current pretreatment unit production capacity is not saturated, it is necessary to design the waste gas condenser of the current esterified water storage tank to achieve increased production of raw materials for the pretreatment unit.

[0003] Based on the above situation, the utility model proposes a device for collecting and reusing esterification water waste gas, which can effectively solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide an esterification water waste gas collection and reuse device. The esterification water waste gas collection and reuse device of the utility model is easy to use. Through the coordinated arrangement between the esterification water storage tank, the tail gas condenser, and the water storage tank, part of the waste gas that was not condensed in the esterification water storage tank is made to overflow back to the esterification water storage tank by passing water to form waste water containing organic matter, thereby increasing the stripping raw materials and realizing the increase in the production of raw materials of the pretreatment device.

[0005] The utility model is realized by the following technical solutions:

[0006] An esterification water waste gas collection and recycling device comprises an esterification water storage tank, a tail gas condenser, and a water storage tank;

[0007] The esterification water storage tank is connected to one end of the tail gas condenser through the first condensate pipe, and the other end of the tail gas condenser is connected to the middle and lower part of the water storage tank through the inlet pipe; the water storage tank is connected to the desalted water system through the desalted water pipe; the middle part of the water storage tank is connected to the esterification water storage tank through the second condensate pipe, and the water storage tank is connected with a heat medium tail gas pipe.

[0008] The purpose of the utility model is to provide an esterification water waste gas collection and reuse device. The esterification water waste gas collection and reuse device of the utility model is easy to use. Through the coordinated arrangement between the esterification water storage tank, the tail gas condenser, and the water storage tank, part of the waste gas that was not condensed in the esterification water storage tank is made to overflow back to the esterification water storage tank by passing water to form waste water containing organic matter, thereby increasing the stripping raw materials and realizing the increase in the production of raw materials of the pretreatment device.

[0009] Preferably, the condenser is connected to the heat medium tail gas pipeline through a condenser outlet pipeline, and a bypass valve is provided on the condenser outlet pipeline.

[0010] Preferably, an inlet valve and a micro-positive pressure one-way valve are sequentially provided on the inlet pipe along the exhaust gas conveying direction.

[0011] Preferably, a desalted water inlet valve and an electromagnetic flowmeter are sequentially provided on the desalted water pipeline along the flow direction of the desalted water.

[0012] Preferably, the second condensate pipeline is provided with a condensate outlet valve near the water storage tank.

[0013] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0014] The esterification water waste gas collection and recycling device of the utility model is easy to use. Through the coordinated arrangement of the esterification water storage tank, the tail gas condenser and the water storage tank, part of the waste gas that has not been condensed in the esterification water storage tank is made to overflow back into the esterification water storage tank by passing water to form waste water containing organic matter, thereby increasing the stripping raw materials and achieving increased production of the raw materials of the pretreatment device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model. DETAILED DESCRIPTION

[0016] In order to enable those skilled in the art to better understand the technical solution of the utility model, the preferred implementation scheme of the utility model is described below in conjunction with specific embodiments. However, it should be understood that the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. In order to better illustrate this embodiment, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted. The positional relationship described in the drawings is only used for illustrative purposes and cannot be understood as a limitation on this patent.

[0017] Embodiment 1:

[0018] like Figure 1As shown, the utility model provides an esterification water waste gas collection and reuse device, including an esterification water storage tank 1, a tail gas condenser 3, and a water storage tank 9;

[0019] The esterified water storage tank 1 is connected to one end of the tail gas condenser 3 through the first condensate pipe 2, and the other end of the tail gas condenser 3 is connected to the middle and lower part of the water storage tank 9 through the inlet pipe 7; the water storage tank 9 is connected to the desalted water system through the desalted water pipe 10; the middle part of the water storage tank 9 is connected to the esterified water storage tank 1 through the second condensate pipe 13, and the water storage tank 9 is connected to a heat medium tail gas pipe 15.

[0020] Embodiment 2:

[0021] like Figure 1 As shown, the utility model provides an esterification water waste gas collection and reuse device, including an esterification water storage tank 1, a tail gas condenser 3, and a water storage tank 9;

[0022] The esterified water storage tank 1 is connected to one end of the tail gas condenser 3 through the first condensate pipe 2, and the other end of the tail gas condenser 3 is connected to the middle and lower part of the water storage tank 9 through the inlet pipe 7; the water storage tank 9 is connected to the desalted water system through the desalted water pipe 10; the middle part of the water storage tank 9 is connected to the esterified water storage tank 1 through the second condensate pipe 13, and the water storage tank 9 is connected to a heat medium tail gas pipe 15.

[0023] The condenser 3 is connected to the heat medium tail gas pipeline 15 through the condenser outlet pipeline 4 , and a bypass valve 5 is provided on the condenser outlet pipeline 4 .

[0024] When the wastewater pretreatment device is saturated or the collection system of the water storage tank 9 has problems, the overflowing waste gas can be introduced into the heat medium furnace through the heat medium tail gas pipeline 15 through the condenser outlet pipeline 4 to assist combustion.

[0025] Furthermore, in another embodiment, an inlet valve 6 and a micro-positive pressure one-way valve 8 are sequentially provided on the inlet pipe 7 along the exhaust gas conveying direction.

[0026] Furthermore, in another embodiment, a desalted water inlet valve 12 and an electromagnetic flowmeter 11 are sequentially provided on the desalted water pipeline 10 along the flow direction of the desalted water.

[0027] Furthermore, in another embodiment, the second condensate pipeline 13 is provided with a condensate outlet valve 14 near the water storage tank 9 .

[0028] The working principle of one embodiment of the utility model is as follows:

[0029] A device for collecting and recycling esterification water waste gas, wherein a part of the volatile waste gas in the esterification water storage tank 1 is condensed by a tail gas condenser 3, and the remaining overflowing waste gas is passed through a water storage tank 9 filled with demineralized water, and then a part of waste water containing organic matter is formed and overflowed back to the esterification water storage tank 1 through a condensate pipe, thereby achieving an increase in the production of raw materials for the wastewater pretreatment device, thereby improving the output of the device.

[0030] According to the description and drawings of the utility model, those skilled in the art can easily manufacture or use the esterification water waste gas collection and reuse device of the utility model, and can produce the positive effects recorded in the utility model.

[0031] Unless otherwise specified, in the present invention, the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicating orientation or positional relationships are based on the orientation or positional relationships shown in the drawings, which are only for the convenience of describing the present invention 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 operate in a specific orientation. Therefore, the terms describing the orientation or positional relationship in the present invention are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood in conjunction with the drawings and according to specific circumstances.

[0032] Unless otherwise specified and limited, in the present invention, the terms "disposed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification or equivalent changes made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A device for collecting and reusing esterification water waste gas, characterized in that: It comprises an esterification water storage tank (1), a tail gas condenser (3), and a water storage tank (9); The esterified water storage tank (1) is connected to one end of the tail gas condenser (3) through a first condensate pipe (2), and the other end of the tail gas condenser (3) is connected to the middle and lower part of the water storage tank (9) through an inlet pipe (7); the water storage tank (9) is connected to the desalted water system through a desalted water pipe (10); the middle part of the water storage tank (9) is connected to the esterified water storage tank (1) through a second condensate pipe (13), and a heat medium tail gas pipe (15) is connected to the water storage tank (9).

2. The device for collecting and reusing esterification water waste gas according to claim 1, characterized in that: The condenser (3) is connected to the heat medium tail gas pipeline (15) through the condenser outlet pipeline (4), and a bypass valve (5) is provided on the condenser outlet pipeline (4).

3. The device for collecting and reusing esterification water waste gas according to claim 1, characterized in that: An inlet valve (6) and a micro-positive pressure one-way valve (8) are sequentially arranged on the inlet pipe (7) along the exhaust gas conveying direction.

4. The device for collecting and reusing esterification water waste gas according to claim 1, characterized in that: The desalted water pipeline (10) is provided with a desalted water inlet valve (12) and an electromagnetic flowmeter (11) in sequence along the flow direction of the desalted water.

5. The device for collecting and reusing esterification water waste gas according to claim 1, characterized in that: The second condensate pipeline (13) is provided with a condensate outlet valve (14) near the water storage tank (9).

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