CN215249632U - Cooling water recycling device for formic acid production process - Google Patents
Cooling water recycling device for formic acid production process Download PDFInfo
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- CN215249632U CN215249632U CN202120729000.0U CN202120729000U CN215249632U CN 215249632 U CN215249632 U CN 215249632U CN 202120729000 U CN202120729000 U CN 202120729000U CN 215249632 U CN215249632 U CN 215249632U
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Abstract
The utility model discloses formic acid production technology field, concretely relates to formic acid production technology cooling water recycle device. In order to solve the problem of recycling cooling water containing formic acid in the formic acid production process, the utility model provides a cooling water recycling device for the formic acid production process, which comprises a cooling water collecting pipe, a cooling water collecting tank and a mixer; the formic acid production device is connected with an inlet of the cooling water collecting tank through a cooling water collecting pipe, an outlet of the cooling water collecting tank is connected with a first inlet of the mixer through a cooling water outlet pipe, and the material feeding pipe is connected with a second inlet of the mixer. The recovery of cooling water containing formic acid can be realized.
Description
Technical Field
The utility model relates to a formic acid production technology field, concretely relates to formic acid production technology cooling water recycle device.
Background
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and is not necessarily to be taken as an acknowledgement or any form of suggestion that this information constitutes prior art that is already known to a person skilled in the art.
Formic acid is an organic chemical raw material and is also used as a disinfectant and a preservative. At present, the production process of formic acid generally comprises 4 process routes of a sodium formate method, a formamide method, a butane liquid phase oxidation method and a methyl formate hydrolysis method, after the formic acid is prepared, the prepared formic acid needs to be rectified and purified due to high impurity content, the formic acid is distilled from the top of a rectifying tower, the temperature of the gas-phase formic acid is generally higher than 150 ℃, and the temperature needs to be reduced, condensed into liquid and stored.
In the production process of formic acid, cooling water is often used. The inventors found that formic acid partially leaked into the cooling water, and thus the cooling water contained formic acid. At present, cooling water is mainly recycled or directly discharged. If the cooling water containing formic acid is only used as cooling water for recycling, the formic acid in the cooling water cannot be fully utilized, and great waste is caused. If the cooling water with formic acid is directly discharged, environmental pollution is caused.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems in the prior art, the utility model provides a formic acid production technology cooling water recycle device realizes formic acid production technology cooling water recycle's purpose.
Specifically, the utility model discloses a following technical scheme realizes:
a cooling water recycling device for a formic acid production process comprises a cooling water collecting pipe, a cooling water collecting tank and a mixer;
the formic acid production device is connected with an inlet of the cooling water collecting tank through a cooling water collecting pipe, an outlet of the cooling water collecting tank is connected with a first inlet of the mixer through a cooling water outlet pipe, and the material feeding pipe is connected with a second inlet of the mixer.
The utility model discloses one or more embodiments have following beneficial effect:
1) the device simple structure retrieves the cost reduction that realizes the raw materials with the cooling water that contains formic acid. The process flow is simple, the operation is convenient, the treatment process is closed, and the method is safe and reliable.
2) The design of the cooling water collecting tank is convenient for stabilizing the water pressure.
3) Methyl formate is added into the mixer through the material feeding pipe, water in the cooling water reacts with the methyl formate to produce formic acid, and meanwhile, the formic acid in the cooling water is used as a catalyst of the reaction to accelerate the reaction.
Drawings
The accompanying drawings, which form a part of the specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without unduly limiting the scope of the invention.
Fig. 1 is a schematic structural diagram of an apparatus in embodiment 1 of the present invention.
Wherein: 1. cooling water collecting pipe, 2, cooling water collecting vat, 3, cooling water outlet pipe, 4, material inlet pipe, 5, blender, 6, blender circulating pipe, 7, discharging pipe, 8, formic acid apparatus for producing, 9, blender circulating pump, 10, cooling water collecting pump, 11, cooling water play water pump, 12, discharge pump.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the invention. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that when the term "comprising" is used in the present invention, it indicates the presence of the feature, device, component and/or combination thereof.
In the formic acid production process, cooling water contains partial formic acid, and no device for recycling the formic acid in the cooling water exists in the prior art. In order to solve the problems, the utility model provides a cooling water recycling device for formic acid production process, which comprises a cooling water collecting pipe, a cooling water collecting tank and a mixer;
the formic acid production device is connected with an inlet of the cooling water collecting tank through a cooling water collecting pipe, an outlet of the cooling water collecting tank is connected with a first inlet of the mixer through a cooling water outlet pipe, and the material feeding pipe is connected with a second inlet of the mixer.
In some embodiments, the mixer is provided with an outlet one and an inlet three, and the outlet one of the mixer is connected with the inlet three of the mixer through a mixer circulation pipe.
In some embodiments, the mixer circulation line is provided with one or more mixer circulation pumps in parallel.
The design of the circulating pipe of the mixer and the circulating pump of the mixer is to ensure that the cooling water containing formic acid fully reacts with the materials entering from the material feeding pipe. The mixer is internally provided with pressure, and the liquid level is stabilized after entering the collecting tank and then can be sent into the mixer after being pressurized by a pump.
In some embodiments, one or more cooling water collection pumps are arranged on the cooling water collection pipe in parallel.
In some embodiments, the number of the cooling water collecting pumps is four.
The design of a plurality of cooling water collecting pumps can improve the collection efficiency of cooling water firstly, can not influence the normal collection of cooling water secondly when a cooling water collecting pump damages, and the third is to carrying out the pressure to the cooling water, adapts to the pressure in the blender.
In some embodiments, a first filter is provided on the cooling water collection pipe, and the first filter is provided before the cooling water collection pump.
If the quality of cooling water is relatively poor, there are more suspended particles in the cooling water, take place the jam easily, may influence the pump body normal use of the cooling water of flowing through, the way of designing the filter before the cooling water collection pump can reduce the holistic fault rate of device.
In some embodiments, one or more cooling water outlet pumps connected in parallel are arranged on the cooling water outlet pipe.
In some embodiments, the number of the cooling water collecting pumps is two.
The design of a plurality of cooling water collecting pumps can improve the water outlet efficiency of the cooling water, and can not influence the normal water outlet of the cooling water when one cooling water outlet pump is damaged.
In some embodiments, the cooling water outlet pipe is provided with a second filter, and the second filter is arranged before the cooling water outlet pump.
The design of second filter can further reduce cooling water quality to the utility model discloses the influence of device reduces the device fault rate.
In some embodiments, the mixer is provided with a second outlet, and the second outlet is connected with a discharge pipe.
In some embodiments, a heating device is provided within the mixer.
In some embodiments, the heating device is a fin heat exchanger.
In some embodiments, the heating device is a tubular heat exchanger.
Because the reaction of methyl formate hydrolysis to generate formic acid is an endothermic reaction, the design of the heating device can promote the forward progress of the reaction.
In some embodiments, one or more discharge pumps are provided in parallel on the discharge pipe.
In some embodiments, the mixer is provided with an outlet, all outlets of the mixer being provided with a filter.
In some embodiments, the cooling water collection pipe is a stainless steel pipe.
In some embodiments, the cooling water collection tank is a stainless steel collection vessel.
In some embodiments, the cooling water outlet pipe is a stainless steel pipe.
In some embodiments, the mixer is a stainless steel equipment vessel.
In some embodiments, the mixer circulation tube is 316L stainless steel.
In some embodiments, the material of the tapping pipe is 316L stainless steel.
Example 1
Referring to fig. 1, a cooling water recycling device for formic acid production process includes a cooling water collecting pipe 1, a cooling water collecting tank 2, and a mixer 5;
the formic acid production device 8 is connected with an inlet of the cooling water collecting tank 2 through the cooling water collecting pipe 1, an outlet of the cooling water collecting tank 2 is connected with a first inlet of the mixer 5 through the cooling water outlet pipe 3, and the material feeding pipe 4 is connected with a second inlet of the mixer 5.
The mixer 5 is provided with an outlet I and an inlet III, and the outlet I of the mixer 5 is connected with the inlet III of the mixer 5 through a mixer circulating pipe 6.
The mixer circulation pipe 6 is provided with one or more mixer circulation pumps 9 connected in parallel.
One or more cooling water collecting pumps 10 connected in parallel are arranged on the cooling water collecting pipe 1.
And a first filter is arranged on the cooling water collecting pipe 1 and is arranged in front of the cooling water collecting pump.
And one or more cooling water outlet pumps 11 connected in parallel are arranged on the cooling water outlet pipe 3.
And a second filter is arranged on the cooling water outlet pipe 3 and is arranged in front of the cooling water outlet pump 11.
The mixer 5 is provided with an outlet II, and the outlet II is connected with a discharge pipe 7.
One or more discharge pumps 12 connected in parallel are arranged on the discharge pipe 7.
The mixer 5 is provided with outlets, all outlets of the mixer 5 being provided with filters.
A heating device is arranged in the mixer 5.
The heating device is a fin heat exchanger or a tubular heat exchanger.
Example 2
The reaction performed in the formic acid production apparatus 8 is: the method comprises the steps of using CO and methanol for carbonyl synthesis of methyl formate, and then using the methyl formate and desalted water for hydrolysis under the autocatalysis of formic acid to obtain the formic acid.
The cooling water in the formic acid production device 8 is desalted water, a small amount of formic acid leaks into the cooling water due to the sealing characteristic of rotating equipment, and finally the mixed solution of the desalted water and the formic acid can be used as a raw material for preparing the formic acid by hydrolyzing methyl formate.
Cooling water among the formic acid apparatus for producing gets into cooling water collecting vat 2 through cooling water collection pump 10, and cooling water collecting vat 2 is as collecting the facility, collects then stabilizes the liquid level in unison the cooling water, and rethread cooling water outlet pipe 3, cooling water outlet pump 2 get into blender 5, and methyl formate passes through material inlet pipe 4 and gets into blender 5, and methyl formate and desalinized water reaction generate formic acid, and formic acid is the catalyst of this reaction, promotes going on of this reaction. The mixer is internally provided with a heating device, and the design of the heating device can also promote the reaction and the generation of formic acid. The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention, therefore, the invention is not limited thereto.
Claims (10)
1. A cooling water recycling device for a formic acid production process is mainly characterized in that: comprises a cooling water collecting pipe, a cooling water collecting tank and a mixer;
the formic acid production device is connected with an inlet of the cooling water collecting tank through a cooling water collecting pipe, an outlet of the cooling water collecting tank is connected with a first inlet of the mixer through a cooling water outlet pipe, and the material feeding pipe is connected with a second inlet of the mixer.
2. The cooling water recycling device of the formic acid production process as defined in claim 1, which is mainly characterized in that: the mixer is provided with an outlet I and an inlet III, and the outlet I of the mixer is connected with the inlet III of the mixer through a mixer circulating pipe.
3. The cooling water recycling device of the formic acid production process as defined in claim 2, which is mainly characterized in that: and one or more mixer circulating pumps connected in parallel are arranged on the mixer circulating pipe.
4. The cooling water recycling device of the formic acid production process as defined in claim 1, which is mainly characterized in that: one or more cooling water collecting pumps which are connected in parallel are arranged on the cooling water collecting pipe.
5. The cooling water recycling device of the formic acid production process as defined in claim 1, which is mainly characterized in that: one or more cooling water outlet pumps which are connected in parallel are arranged on the cooling water outlet pipe.
6. The cooling water recycling device of the formic acid production process as defined in claim 1, which is mainly characterized in that: the mixer is provided with an outlet II, and the outlet II is connected with a discharge pipe.
7. The cooling water recycling device of the formic acid production process as defined in claim 6, which is mainly characterized in that: and one or more discharge pumps connected in parallel are arranged on the discharge pipe.
8. The cooling water recycling device of the formic acid production process as defined in claim 1, which is mainly characterized in that: and a heating device is arranged in the mixer.
9. The cooling water recycling device of the formic acid production process as defined in claim 8, which is mainly characterized in that: the heating device is a fin heat exchanger.
10. The cooling water recycling device of the formic acid production process as defined in claim 8, which is mainly characterized in that: the heating device is a tubular heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120729000.0U CN215249632U (en) | 2021-04-09 | 2021-04-09 | Cooling water recycling device for formic acid production process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120729000.0U CN215249632U (en) | 2021-04-09 | 2021-04-09 | Cooling water recycling device for formic acid production process |
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| Publication Number | Publication Date |
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| CN215249632U true CN215249632U (en) | 2021-12-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120729000.0U Active CN215249632U (en) | 2021-04-09 | 2021-04-09 | Cooling water recycling device for formic acid production process |
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| CN (1) | CN215249632U (en) |
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2021
- 2021-04-09 CN CN202120729000.0U patent/CN215249632U/en active Active
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