New process for reusing steam condensate water in wine tower in acetaldehyde production

Abstract

The present application provides a new process for recycling wine tower steam condensate water in acetaldehyde production, belonging to the field of acetaldehyde distillation condensate water recycling. The specific steps of the new process for recycling wine tower steam condensate water in acetaldehyde production are automatic feeding, wine tower distillation, steam rapid condensation, high-efficiency circulating refrigeration, condensate water treatment and condensate water detection. The present application provides a reasonable recycling process. Steam is introduced into the collection pipeline through the guide pipe, and the internal cooling gas cooperates with the cooling outside the pipe wall to make the liquid in the steam rapidly condense into condensate water. In addition, the flowing gas stream can also accelerate the downward flow speed of the condensate water, improving the working efficiency. Furthermore, the recycling of the cooling gas stream can accelerate the cooling speed of the cooling gas, achieving the effect of energy saving.

Description

Technical Field

[0001] This invention relates to the field of acetaldehyde distillation condensate reuse technology, and particularly to a new process for reusing steam condensate from the distillation tower in acetaldehyde production. Background Technology

[0002] An existing patent application (CN201920972563.5) describes a device for recovering and reusing steam condensate. This device collects steam condensate from each unit into the hot water area of ​​a steam condensate tank via condensate collection pipelines. In winter, the steam condensate is used as circulating water in the heating system via a heat pump and heat exchanger, achieving secondary heat utilization. Currently, most condensate recovery methods involve cooling the steam pipelines, resulting in poor condensation rates and conflicts with distillation processes during condensate collection. Summary of the Invention

[0003] To address the aforementioned technical problems, this invention provides a novel process for reusing steam condensate from the brewing tower in acetaldehyde production. The process involves drawing out the steam for cooling and using circulating gas to improve the collection efficiency of the condensate.

[0004] The technical solution is as follows: The new process for reusing steam condensate from the acetaldehyde production tower specifically includes the following steps:

[0005] Step 1: Automatic feeding: Acetaldehyde is fed into the wine tower through a feeder, and the feeding process is strictly controlled by a metering valve.

[0006] Step 2: Distillation in a distillation tower: The temperature inside the distillation tower is raised to distill acetaldehyde using the high temperature inside the tower, which also generates a large amount of steam.

[0007] Step 3: Rapid condensation of steam, which includes the following steps:

[0008] Step 1: Steam Induction: Install an outlet pipe at the top of the wine tower, and separate the entire structure upwards through the outlet pipe from the wine tower;

[0009] Step 2: Steam cooling: After being guided, the steam flows into a vertical collection pipe. At this time, a storage box is installed on the outside of the pipe. The coolant in the storage box will cool the inner wall of the pipe. When the steam encounters the cooler inner wall, it will condense, thus forming condensate on the inner wall of the pipe.

[0010] Step 3: Accelerate the flow: The fan installed at the top of the collection pipe blows air into the inside of the collection pipe, and the air inlet of the fan is connected to the air outlet of the external refrigeration box. The cooling airflow flows up and down from the inside of the collection pipe. After mixing with the steam, it accelerates the condensation of the condensate on the inside of the steam, and the condensate adhering to the inner wall of the collection pipe will flow downwards quickly.

[0011] Step 4: Gas-liquid separation: The condensate falls downward into the condensate collection tank at the bottom of the collection pipe, and the cooling airflow is discharged through the through hole at the top of the condensate collection tank;

[0012] Step 4: High-efficiency circulating cooling, which includes the following operating steps:

[0013] Step 1: Cooling airflow circulation: The cooling airflow discharged from the condensate collection tank first passes through the filter screen, and then returns to the inside of the refrigeration box through the circulation pipe;

[0014] Step 2: Rapid cooling: The refrigeration unit inside the cooling box cools the circulated airflow again, reducing the temperature of the cooling airflow to the rated temperature. Then, the air pump draws the cooling zone in the cooling box into an insulated tank for storage.

[0015] Step 3: Cooling airflow extraction: External airflow is sent to the cooling duct above the fan through the insulated pipe, and the fan blows the cooling airflow downwards, causing the cooling airflow to flow rapidly from the inside of the collection pipe.

[0016] Step 5: Condensate treatment, which includes the following steps:

[0017] Step 1: Condensate biological treatment: The collected condensate is sent to the processor for treatment. Anaerobic biological treatment is combined with aerobic biological treatment to treat the condensate.

[0018] Step 2: Solid-liquid-gas three-phase separation: The treated condensate is sent into a three-phase separator to separate the condensate, organic matter, and generated gas, and then transported to the corresponding storage tank through the corresponding pipelines.

[0019] Step 3: Gas detection: The separated gas enters the gas storage tank. Various gas detectors inside the gas storage tank will evaluate the gas. After confirming that the gas meets the emission standards, it will be discharged after being filtered through an activated carbon filter.

[0020] Step Six: Condensate Water Testing: Install an acetaldehyde detector on the outside of the condensate water discharge pipe, with the detector's sensor located inside the pipe. The discharged condensate water is monitored in real time. Water that passes the test can be used in the construction and heating industries.

[0021] Preferably, in the gas-liquid separation of step three, the upper part of the storage box is provided with a through hole, and a filter screen is embedded inside the vent hole to achieve the filtering effect and prevent the circulating airflow from carrying out the condensate.

[0022] Preferably, in the second step of steam cooling in step three, the collection pipe consists of two parts: an upper hollow inverted conical pipe and a lower hollow cylindrical pipe. Reducing the diameter of the ventilation pipe can make the airflow velocity faster and ensure that the cooling airflow and steam are in full contact.

[0023] Compared with existing technologies, this invention has the following beneficial effects: The novel process for reusing steam condensate from the acetaldehyde production tower is widely applied in the field of acetaldehyde distillation condensate reuse. This invention provides a reasonable reuse process. Steam is introduced into the collection pipe through a guide pipe. The internal cooling gas, combined with the cooling on the outside of the pipe wall, causes the liquid in the steam to quickly condense into condensate. Furthermore, the flowing airflow accelerates the downward flow of the condensate, improving work efficiency. Secondly, the circulation of the cooling airflow accelerates the cooling rate of the cold gas, achieving energy savings. Finally, the condensate treatment process allows for biological treatment of the condensate, contributing to environmental protection. Attached Figure Description

[0024] Figure 1 This is a flowchart of a new process for reusing steam condensate from the wine tower in acetaldehyde production.

[0025] Figure 2 This is a flowchart of the rapid condensation process of steam.

[0026] Figure 3 This is a flowchart of a high-efficiency cyclic refrigeration process.

[0027] Figure 4 This is a flowchart of the condensate water treatment process. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings:

[0029] In the picture:

[0030] As attached Figures 1 to 4 As shown

[0031] The new process for reusing steam condensate from the brewing tower in acetaldehyde production includes the following steps:

[0032] S101: Automatic feeding: Acetaldehyde is fed into the wine tower through a feeder, and the feeding process is strictly controlled by a metering valve.

[0033] S102: Distillation in a distillation tower: The temperature inside the distillation tower is raised to distill acetaldehyde at the high temperature inside the tower, and a large amount of steam is generated during the distillation process.

[0034] S103: Rapid steam condensation, specifically including the following operating steps:

[0035] S301: Steam guidance: Install an outlet pipe at the top of the wine tower, and separate the entire structure upwards through the outlet pipe from the wine tower;

[0036] S302: Steam cooling: After being guided, the steam flows into a vertical collection pipe. At this time, a storage box is installed on the outside of the pipe. The coolant in the storage box will cool the inner wall of the pipe. When the steam encounters the cooler inner wall, it will condense, thus forming condensate on the inner wall of the pipe.

[0037] S303: Accelerated flow: A fan installed at the top of the collection pipe blows air into the inside of the collection pipe, and the air inlet of the fan is connected to the air outlet of the external refrigeration box. The cooling airflow flows up and down from the inside of the collection pipe, and after mixing with the steam, it accelerates the condensation of the condensate on the inside of the steam. The condensate adhering to the inner wall of the collection pipe will flow downwards quickly.

[0038] S304: Gas-liquid separation: Condensate falls downward into the condensate collection tank at the bottom of the collection pipe, and the cooling airflow is discharged through the through hole at the top of the condensate collection tank;

[0039] S104: High-efficiency circulating refrigeration, specifically including the following operating steps:

[0040] S401: Cooling airflow circulation: The cooling airflow discharged from the condensate collection tank first passes through the filter screen, and then returns to the inside of the refrigeration unit through the circulation pipe;

[0041] S402: Rapid cooling: The refrigeration unit inside the cooling box cools the recirculated airflow again, reducing the temperature of the cooling airflow to the rated temperature. Then, the air pump draws the cooling zone in the cooling box into an insulated tank for storage.

[0042] S403: Cooling airflow extraction: External airflow is delivered to the cooling duct above the fan through the insulated pipe, and the fan blows the cooling airflow downwards, causing the cooling airflow to flow rapidly from the inside of the collection pipe.

[0043] S105: Condensate treatment, specifically including the following operating steps:

[0044] S501: Condensate biological treatment: The collected condensate is sent to the processor for treatment. Anaerobic biological treatment is combined with aerobic biological treatment to treat the condensate.

[0045] S502: Solid-liquid-gas three-phase separation: The treated condensate is sent into the three-phase separator to separate the condensate, organic matter, and generated gas, and then transported to the corresponding storage tank through the corresponding conveying pipeline;

[0046] S503: Gas detection: The separated gas enters the gas storage box. Various gas detectors inside the gas storage box will evaluate the gas. After confirming that the gas meets the emission standards, it will be discharged after being filtered through an activated carbon filter.

[0047] S106: Condensate Water Detection: Install an acetaldehyde detector on the outside of the condensate water discharge pipe, with the detector sensor located on the inside of the pipe. The discharged condensate water is monitored in real time. Water that passes the test can be used in the construction and heating industries.

[0048] Any technical solution that achieves the above-mentioned technical effects by utilizing the technical solutions described in this invention, or by designing similar technical solutions by those skilled in the art under the inspiration of the technical solutions described in this invention, falls within the protection scope of this invention.

Claims

1. A new process for reusing steam condensate from the brewing tower in acetaldehyde production, characterized in that, The new process for reusing steam condensate from the brewing tower in acetaldehyde production specifically includes the following steps: Step 1: Automatic feeding: Acetaldehyde is fed into the wine tower through a feeder, and the feeding process is strictly controlled by a metering valve. Step 2: Distillation in a distillation tower: The temperature inside the distillation tower is raised to distill acetaldehyde using the high temperature inside the tower, which also generates a large amount of steam. Step 3: Rapid condensation of steam; In step three, the rapid condensation of steam specifically includes the following operational steps: Step 1: Steam Induction: Install an outlet pipe at the top of the wine tower, and separate the entire structure upwards through the outlet pipe from the wine tower; Step 2: Steam cooling: After being guided, the steam flows into a vertical collection pipe. At this time, a storage box is installed on the outside of the pipe. The coolant in the storage box will cool the inner wall of the pipe. When the steam encounters the cooler inner wall, it will condense, thus forming condensate on the inner wall of the pipe. Step 3: Accelerate the flow: The fan installed at the top of the collection pipe blows air into the inside of the collection pipe, and the air inlet of the fan is connected to the air outlet of the external refrigeration box. The cooling airflow flows up and down from the inside of the collection pipe. After mixing with the steam, it accelerates the condensation of the condensate on the inside of the steam, and the condensate adhering to the inner wall of the collection pipe will flow downwards quickly. Step 4: Gas-liquid separation: The condensate falls downward into the condensate collection tank at the bottom of the collection pipe, and the cooling airflow is discharged through the through hole at the top of the condensate collection tank; Step 4: High-efficiency circulating refrigeration; In step four, the high-efficiency cyclic refrigeration specifically includes the following operational steps: Step 1: Cooling airflow circulation: The cooling airflow discharged from the condensate collection tank first passes through the filter screen, and then returns to the inside of the refrigeration box through the circulation pipe; Step 2: Rapid cooling: The refrigeration unit inside the cooling box cools the circulated airflow again, reducing the temperature of the cooling airflow to the rated temperature. Then, the air pump draws the cooling zone in the cooling box into an insulated tank for storage. Step 3: Cooling airflow extraction: External airflow is sent to the cooling duct above the fan through the insulated pipe, and the fan blows the cooling airflow downwards, causing the cooling airflow to flow rapidly from the inside of the collection pipe. Step 5: Condensate treatment; In step five, the condensate treatment specifically includes the following steps: Step 1: Condensate biological treatment: The collected condensate is sent to the processor for treatment. Anaerobic biological treatment is combined with aerobic biological treatment to treat the condensate. Step 2: Solid-liquid-gas three-phase separation: The treated condensate is sent into a three-phase separator to separate the condensate, organic matter, and generated gas, and then transported to the corresponding storage tank through the corresponding pipelines. Step 3: Gas detection: The separated gas enters the gas storage tank. Various gas detectors inside the gas storage tank will evaluate the gas. After confirming that the gas meets the emission standards, it will be discharged after being filtered through an activated carbon filter. Step Six: Condensate Water Testing: Install an acetaldehyde detector on the outside of the condensate water discharge pipe, with the detector's sensor located inside the pipe. The discharged condensate water is tested in real time. Water that passes the test is used in the construction and heating industries.

2. The novel process for reusing steam condensate from the acetaldehyde production tower as described in claim 1, characterized in that, In the gas-liquid separation process of step three, the upper part of the storage box is provided with a through hole, and a filter screen is embedded inside the through hole.

3. The novel process for reusing steam condensate from the brewing tower in acetaldehyde production as described in claim 1, characterized in that, In the second step of step three, steam cooling, the collection pipe consists of two parts: an upper hollow inverted conical pipe and a lower hollow cylindrical pipe.

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