Comprehensive utilization device for liquid discharged from methylamine environment-friendly tower kettle

Abstract

The utility model discloses a comprehensive utilization device for liquid discharged from an environment-friendly methylamine tower kettle. The comprehensive utilization device for the discharged liquid of the methylamine environment-friendly tower kettle comprises a filtering mechanism, an evaporation tank and an adsorption tank are sequentially installed below the filtering mechanism, an exhaust port is formed in the top of the evaporation tank, and a heat exchanger is installed at the far end of the exhaust port. According to the comprehensive utilization device for the discharged liquid of the methylamine environment-friendly tower kettle, the filtering mechanism, the evaporation tank and the adsorption tank are arranged, so that the waste liquid discharged by the methylamine environment-friendly tower kettle can be filtered, evaporated and adsorbed, the contents of suspended solids, organic matters and metal ions in the waste water are reduced, the chroma of the waste water is further reduced, the peculiar smell of the waste water is reduced, and the environmental pollution is reduced. And the heat exchanger is connected with the evaporation tank, so that heat energy can be recycled, and energy conservation and consumption reduction are facilitated.

Description

Technical Field

[0001] This utility model relates to the field of chemical production technology, and in particular to a comprehensive utilization device for the methylamine environmental protection tower bottom drain liquid. Background Technology

[0002] Methylamine is an organic compound with the chemical formula CH3NH2, formed by replacing one hydrogen atom in ammonia with a methyl group. Methylamine is an important organic chemical raw material with wide applications in various fields. Industrially, the synthesis of methylamine mainly involves the reaction of ammonia with methanol under a catalyst. This reaction has advantages such as readily available and inexpensive raw materials and relatively mild synthesis conditions, but it also presents certain byproduct problems.

[0003] The methylamine distillation treatment tower is an important component in the methylamine production process, primarily used to treat and recover wastewater generated during methylamine distillation. Through treatment in this tower, valuable components such as methylamine and dimethylamine can be effectively recovered from the wastewater, thereby reducing resource waste.

[0004] However, the effluent from the methylamine environmental protection tower still contains substances such as amine, methanol, COD, and suspended solids, and the effluent has a high color, affecting the appearance of the water.

[0005] Therefore, it is necessary to provide a comprehensive utilization device for the methylamine environmental protection tower bottom drain to solve the above-mentioned technical problems. Utility Model Content

[0006] In view of the above situation and to overcome the defects of the existing technology, this utility model provides a comprehensive utilization device for the methylamine environmental protection tower bottom discharge, which can reduce the color of wastewater, reduce the odor of wastewater, and make the discharge safer and more environmentally friendly.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] The comprehensive utilization device for the methylamine environmental protection tower bottom drain includes: a filtration mechanism, an evaporator and an adsorption tank installed in sequence below the filtration mechanism, an exhaust port on the top of the evaporator, and a heat exchanger installed at the far end of the exhaust port.

[0009] Preferably, there are multiple evaporators.

[0010] Preferably, the filtration mechanism includes an inlet pipe, on which a first control valve, a filter tank, and a second control valve are installed.

[0011] Preferably, there are two filter tanks, and both the first control valve and the second control valve are three-way valves.

[0012] Preferably, the adsorption tank is equipped with a special-shaped tube, activated carbon is installed inside the special-shaped tube, and an overflow hole is opened on the special-shaped tube.

[0013] Preferably, a sealing cap is installed on the shaped tube, and a connecting rod is installed at the bottom of the sealing cap, the connecting rod being connected to the activated carbon.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] (1) By setting up a filtration mechanism, an evaporator and an adsorption tank, this utility model can filter, evaporate and adsorb the waste liquid discharged from the methylamine environmental protection tower, reduce the content of suspended solids, organic matter and metal ions in the wastewater, thereby reducing the color of the wastewater, reducing the odor of the wastewater, and making the discharge safer and more environmentally friendly. By connecting the heat exchanger with the evaporator, heat energy can be recovered and utilized, which is conducive to energy saving and consumption reduction.

[0016] (2) This utility model can conveniently filter wastewater by setting up an inlet pipe, a first control valve, a filter tank and a second control valve;

[0017] (3) By setting two filter tanks and using a three-way valve, the present invention provides two liquid flow channels for the filtration mechanism. The two filter tanks are used alternately, which facilitates the uninterrupted use of the filtration mechanism and makes it easy to clean or replace the filter tanks.

[0018] (4) By setting up a special-shaped pipe and setting an overflow hole and activated carbon on the special-shaped pipe, this utility model can conveniently remove the odor in the wastewater, reduce the content of organic matter and metal ions in the wastewater, reduce the color of the wastewater, and make the discharged wastewater safer and more environmentally friendly.

[0019] (5) By setting a sealing cover and installing a connecting rod, the activated carbon can be easily removed and replaced;

[0020] (6) By installing a limiting ring below the activated carbon, the position of the activated carbon can be conveniently limited. Attached Figure Description

[0021] Figure 1 A schematic diagram of the structure of the comprehensive utilization device for the methylamine environmental protection tower bottom drain provided by this utility model;

[0022] Figure 2 for Figure 1 A schematic diagram of the filtration mechanism in the comprehensive utilization device for the methylamine environmental protection tower bottom drain shown;

[0023] Figure 3 for Figure 1 The diagram shows the structure of the adsorption tank in the comprehensive utilization device for the methylamine environmental protection tower bottom drain.

[0024] The corresponding names of the attached figures are: 1-filtration mechanism, 2-evaporator, 3-adsorption tank, 4-exhaust port, 5-inlet pipe, 6-first control valve, 7-filtration tank, 8-second control valve, 9-shaped tube, 10-overflow hole, 11-activated carbon, 12-sealing cover, 13-connecting rod, 14-limiting ring. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments. The embodiments of the present invention include, but are not limited to, the following embodiments.

[0026] Example 1:

[0027] like Figure 1-3 As shown, this utility model provides a comprehensive utilization device for the methylamine environmental protection tower bottom drain, comprising: a filter mechanism 1 connected to the methylamine environmental protection tower bottom drain pipe; multiple evaporators 2 installed sequentially below the filter mechanism 1; an adsorption tank 3 installed below the lowest evaporator 2; an exhaust port 4 provided at the top of the evaporator 2; the exhaust port 4 connected to a heat exchanger to liquefy the steam and recover the heat energy in the steam for heating or preheating other media, achieving energy saving and consumption reduction. In use, the waste liquid discharged from the methylamine environmental protection tower bottom enters the filter mechanism 1, which filters out suspended solids in the waste liquid, reducing the suspended solids content in the wastewater; or the waste liquid then sequentially enters multiple evaporators 2 for evaporation, and each filter... Tank 2 sets the temperature based on the boiling point of the evaporating material to collect organic matter in the wastewater. Steam is discharged from exhaust port 4 into the heat exchanger, where it absorbs heat and liquefies, recovering the heat energy in the steam for heating or preheating other media, thus achieving energy saving and reducing consumption. This reduces the organic matter content in the wastewater. Finally, the wastewater enters adsorption tank 3, which adsorbs some metal ions and organic matter in the wastewater and removes odors. Only after the above treatment can the wastewater be discharged. Due to the reduction of suspended solids, organic matter, and metal ions in the wastewater, the color of the wastewater is reduced, and the odor is further reduced, making the discharged wastewater safer and more environmentally friendly.

[0028] By setting up a filtration mechanism 1, an evaporator 2, and an adsorption tank 3, the waste liquid discharged from the methylamine environmental protection tower can be filtered, evaporated, and adsorbed, reducing the content of suspended solids, organic matter, and metal ions in the wastewater, thereby reducing the color of the wastewater, lessening the odor of the wastewater, and making the discharge safer and more environmentally friendly. By connecting the heat exchanger to the evaporator 2, heat energy can be recovered and utilized, which is conducive to energy conservation and consumption reduction.

[0029] Example 2:

[0030] like Figure 2As shown, the filtration mechanism 1 includes an inlet pipe 5, on which a first control valve 6, a filter tank 7, and a second control valve 8 are installed. A filter screen is installed inside the filter tank 7, and multiple filter screens can be installed to achieve multi-stage filtration. When in use, the inlet pipe 5 is connected to the drain pipe of the methylamine environmental protection tower. Wastewater enters from the inlet pipe 5, and the flow of wastewater in the filter tank 7 is controlled by the first control valve 6 and the second control valve 8. The filter tank 7 filters the wastewater to remove suspended solids. Finally, the wastewater flows into the evaporator 2.

[0031] By setting up an inlet pipe 5, a first control valve 6, a filter tank 7, and a second control valve 8, wastewater can be easily filtered.

[0032] Example 3:

[0033] like Figure 2 As shown, there are two filter tanks 7, and the first control valve 6 and the second control valve 8 are both three-way valves. When in use, the first control valve 6 and the second control valve 8 are adjusted so that the waste liquid in the water inlet pipe 5 flows through one of the filter tanks 7, so that the other filter tank 7 can be easily removed for cleaning or replacement. The two filter tanks 7 are used alternately, so as to realize the 24-hour uninterrupted use of the filtration mechanism 1.

[0034] By setting up two filter tanks 7 and using a three-way valve, the filter mechanism 1 has two liquid flow channels. The two filter tanks 7 are used alternately, which facilitates the uninterrupted use of the filter mechanism 1 and makes it easy to clean or replace the filter tanks 7.

[0035] Example 4:

[0036] like Figure 3 As shown, a W-shaped shaped tube 9 is installed on the adsorption tank 3. The shaped tube 9 has an inlet that is connected to the evaporator 2. The shaped tube 9 has at least two outlets that extend out of the top of the adsorption tank 3. Activated carbon 11 is installed near the outlet of the shaped tube 9. An overflow hole 10 is opened on the shaped tube 9 above the top of the activated carbon 11. In use, the waste liquid discharged from the evaporator 2 enters the shaped tube 9 through the inlet, then passes through the activated carbon 11, and is discharged from the overflow hole 10 and enters the adsorption tank 3. Finally, it is discharged from the bottom of the adsorption tank 3. The activated carbon 11 removes the odor of the waste liquid, adsorbs some organic matter and metal ions in the waste liquid, and can reduce the color of the wastewater, making the discharged wastewater safer and more environmentally friendly.

[0037] By setting up a special-shaped pipe 9, and installing an overflow hole 10 and activated carbon 11 on the special-shaped pipe 9, it is possible to easily remove odors from wastewater, reduce the content of organic matter and metal ions in wastewater, reduce the color of wastewater, and make the discharged wastewater safer and more environmentally friendly.

[0038] Example 5:

[0039] like Figure 3 As shown, a sealing cap 12 is installed on the outlet of the special-shaped tube 9. A connecting rod 13 is installed at the bottom of the sealing cap 12. The connecting rod 13 passes through the activated carbon 11 and is fixedly connected to the activated carbon 11. When the activated carbon 11 needs to be replaced, the sealing cap 12 is pulled upward, so that the activated carbon 11 can be taken out from the outlet of the special-shaped tube 9 through the connecting rod 13, and then the activated carbon 11 can be replaced.

[0040] By setting the sealing cover 12 and installing the connecting rod 13, the activated carbon 11 can be easily removed and replaced.

[0041] Example 6:

[0042] like Figure 3 As shown, a limiting ring 14 is installed below the activated carbon 11. The limiting ring 14 is fixedly connected to the inner wall of the shaped tube 9. In use, the bottom position of the activated carbon 11 is limited by the limiting ring 14, which can prevent the activated carbon 11 from falling off the connecting rod 13 and entering the depth of the shaped tube 9, making it difficult to remove.

[0043] By installing a limiting ring 14 below the activated carbon 11, the position of the activated carbon 11 can be conveniently limited.

[0044] Working principle: During use, the waste liquid discharged from the methylamine environmental protection tower enters the filtration mechanism 1, which filters out suspended solids in the waste liquid, reducing the content of suspended solids in the wastewater. Alternatively, the waste liquid sequentially enters multiple evaporation tanks 2 for evaporation, and each filtration tank 2 is set with a temperature according to the boiling point of the evaporating substance, thereby collecting organic matter in the wastewater. Steam is discharged from the exhaust port 4 into the heat exchanger, where it absorbs heat and liquefies, recovering the heat energy in the steam for heating or preheating other media, achieving energy saving and consumption reduction, and thus reducing the content of organic matter in the wastewater. Finally, the wastewater enters the adsorption tank 3, which adsorbs some metal ions and organic matter in the wastewater and removes odors. Only after the above treatment can the wastewater be discharged. Due to the reduction of suspended solids, organic matter, and metal ions in the wastewater, the color of the wastewater can be reduced, and the odor of the wastewater can also be further reduced, making the discharged wastewater safer and more environmentally friendly.

Claims

1. A comprehensive utilization device for the effluent from the methylamine environmental protection tower, characterized in that, include: A filtration mechanism (1) is provided, and an evaporator (2) and an adsorption tank (3) are installed in sequence below the filtration mechanism (1). An exhaust port (4) is provided on the top of the evaporator (2), and a heat exchanger is installed at the far end of the exhaust port (4). The filtration mechanism (1) includes an inlet pipe (5), on which a first control valve (6), a filter tank (7), and a second control valve (8) are installed. The adsorption tank (3) is equipped with a special-shaped tube (9), and activated carbon (11) is installed inside the special-shaped tube (9). An overflow hole (10) is opened on the special-shaped tube (9).

2. The comprehensive utilization device for the methylamine environmental protection tower bottom drain as described in claim 1, characterized in that, There are multiple evaporators (2).

3. The comprehensive utilization device for the methylamine environmental protection tower bottom drain as described in claim 1, characterized in that, There are two filter tanks (7), and the first control valve (6) and the second control valve (8) are both three-way valves.

4. The comprehensive utilization device for the methylamine environmental protection tower bottom drain as described in claim 1, characterized in that, A sealing cap (12) is installed on the shaped tube (9), and a connecting rod (13) is installed at the bottom of the sealing cap (12), which is connected to the activated carbon (11).

Images