阅读说明：本技术 一种蒸汽重整装置冷凝液收集再利用系统及其工艺方法 (Condensate collecting and recycling system of steam reforming device and process method thereof ) 是由 谢庆勇 章航洲 张少伟 李文钰 冷军 林力 陈波 胥箫 李娟� 何子昂 郭露西 于 2019-11-25 设计创作，主要内容包括：本发明公开了一种蒸汽重整装置冷凝液收集再利用系统及其工艺方法,包括流化床；流化床进气端依次与蒸汽过热器和储水罐连通,流化床出气端依次与旋风分离器、高温过滤器、全氧化炉、喷淋塔和烟囱连通；流化床底部、以及高温过滤器底部均通过管道与冷凝液收集灌连通；冷凝液收集灌和喷淋塔均与喷淋液储罐连通,喷淋液储罐底部通过管道与污水处理中心连通；蒸汽过热器与流化床之间的管道上设置第一U型沉水段,旋风分离器和高温过滤器之间的管道上设置第二U型沉水段,高温过滤器和全氧化炉之间的管道上设置第三U型沉水段；所述第一U型沉水段、第二U型沉水段和第三U型沉水段均与冷凝液收集灌连通；所述冷凝液收集灌内安装液位传感器。(The invention discloses a condensate collecting and recycling system of a steam reforming device and a process method thereof, comprising a fluidized bed; the air inlet end of the fluidized bed is communicated with the steam superheater and the water storage tank in sequence, and the air outlet end of the fluidized bed is communicated with the cyclone separator, the high-temperature filter, the total oxidation furnace, the spray tower and the chimney in sequence; the bottom of the fluidized bed and the bottom of the high-temperature filter are communicated with a condensate collecting tank through pipelines; the condensate collecting tank and the spray tower are both communicated with a spray liquid storage tank, and the bottom of the spray liquid storage tank is communicated with the sewage treatment center through a pipeline; a first U-shaped water sinking section is arranged on a pipeline between the steam superheater and the fluidized bed, a second U-shaped water sinking section is arranged on a pipeline between the cyclone separator and the high-temperature filter, and a third U-shaped water sinking section is arranged on a pipeline between the high-temperature filter and the full-oxidation furnace; the first U-shaped water settling section, the second U-shaped water settling section and the third U-shaped water settling section are all communicated with the condensate collecting tank; and a liquid level sensor is arranged in the condensate collecting tank.)

1. A steam reformer condensate collection and reuse system characterized in that: comprises a fluidized bed; the air inlet end of the fluidized bed is sequentially communicated with the steam superheater and the water storage tank, and the air outlet end of the fluidized bed is sequentially communicated with the cyclone separator, the high-temperature filter, the total oxidation furnace, the spray tower and the chimney;

the bottom of the fluidized bed and the bottom of the high-temperature filter are communicated with a condensate collecting tank through pipelines; the condensate collecting tank and the spray tower are both communicated with a spray liquid storage tank, and the bottom of the spray liquid storage tank is communicated with the sewage treatment center through a pipeline;

a first U-shaped water sinking section is arranged on a pipeline between the steam superheater and the fluidized bed, a second U-shaped water sinking section is arranged on a pipeline between the cyclone separator and the high-temperature filter, and a third U-shaped water sinking section is arranged on a pipeline between the high-temperature filter and the full-oxidation furnace; the first U-shaped water settling section, the second U-shaped water settling section and the third U-shaped water settling section are all communicated with the condensate collecting tank; and a liquid level sensor is arranged in the condensate collecting tank.

2. The steam reformer condensate collection and reuse system of claim 1, wherein: and regulating valves are arranged on the pipelines between the first U-shaped water settling section, the second U-shaped water settling section and the condensate collecting tank, as well as the pipelines between the third U-shaped water settling section and the condensate collecting tank.

3. The steam reformer condensate collection and reuse system of claim 1, wherein: and a drain valve is arranged on a pipeline between the condensate collecting tank and the spraying liquid storage tank.

4. The steam reformer condensate collection and reuse system of claim 1, wherein: and a vacuum pump is arranged on a pipeline between the gas-liquid separator and the chimney.

5. The steam reformer condensate collection and reuse system of claim 1, wherein: the liquid level sensor is a drop-in intelligent liquid level transmitter PCM 266.

6. The steam reformer condensate collection and reuse system of claim 1, wherein: the blowdown valve is a PZ44H blowdown valve.

7. The steam reformer condensate collection and reuse system of claim 1, wherein: the regulating valve is an electronic single-seat regulating valve LDZDL.

8. The steam reformer condensate collection and reuse system of claim 1, wherein: and pipelines on two sides of the U-shaped water sinking pipe are obliquely arranged.

9. A process for a steam reformer condensate collection and reuse system as recited in any one of claims 1-8, comprising:

s1, starting the fluidized bed to operate;

s2, detecting the temperature of pipelines among all devices in real time;

s3, when the temperature rises to 60 ℃, the regulating valves are sequentially opened along the airflow direction in the pipeline to guide the condensate into the condensate collecting tank, and the drainage time of the condensate is 5-10S;

s4, repeating the step S3 when the temperature rises to 20 ℃ and does not exceed 150 ℃, and opening the adjusting valve in sequence along the airflow direction in the pipeline to guide the condensate into the condensate collecting tank, wherein the drainage time of the condensate is 5-10S;

s5, collecting the liquid level of the condensate in the condensate collecting tank in real time, and when the liquid level reaches an upper limit value, opening a drain valve to guide the condensate into a spray liquid storage tank;

and S6, finishing the operation, and introducing the condensate which is completely used into a sewage treatment center for treatment.

Technical Field

The invention belongs to the technical field of steam reforming devices, and particularly relates to a system and a process method for collecting and recycling condensate of a steam reforming device.

Background

As the new technology of the radioactive spent resin steam reforming equipment, the whole process is high-temperature steam as a conducting medium, because the water is changed into steam state when the temperature exceeds 120 ℃, but is changed into condensed water, more condensed water is generated when the equipment runs, and moreover, the system is used for treating radioactive organic waste, the condensed water generated in the treatment process also carries certain radioactive substances, so that the radioactive organic waste cannot be discharged at will, and even if the discharged radioactive organic waste is discharged, the discharged radioactive organic waste must be discharged after treatment. If the condensed water is collected or treated without any means, the condensed water can be stored in the system, and the condensed water has great influence on key equipment in the system and also has influence on the operation efficiency.

Disclosure of Invention

The present invention is directed to a system and method for collecting and recycling condensate from a steam reformer, which solves or improves the above-mentioned problems.

In order to achieve the purpose, the invention adopts the technical scheme that:

a steam reformer condensate collection and reuse system comprising a fluidized bed; the air inlet end of the fluidized bed is communicated with the steam superheater and the water storage tank in sequence, and the air outlet end of the fluidized bed is communicated with the cyclone separator, the high-temperature filter, the total oxidation furnace, the spray tower and the chimney in sequence;

the bottom of the fluidized bed and the bottom of the high-temperature filter are communicated with a condensate collecting tank through pipelines; the condensate collecting tank and the spray tower are both communicated with a spray liquid storage tank, and the bottom of the spray liquid storage tank is communicated with the sewage treatment center through a pipeline;

a first U-shaped water sinking section is arranged on a pipeline between the steam superheater and the fluidized bed, a second U-shaped water sinking section is arranged on a pipeline between the cyclone separator and the high-temperature filter, and a third U-shaped water sinking section is arranged on a pipeline between the high-temperature filter and the full-oxidation furnace; the first U-shaped water settling section, the second U-shaped water settling section and the third U-shaped water settling section are all communicated with the condensate collecting tank; and a liquid level sensor is arranged in the condensate collecting tank.

Preferably, the pipelines between the first U-shaped water settling section, the second U-shaped water settling section and the condensate collecting tank are all provided with regulating valves.

Preferably, a drain valve is arranged on a pipeline between the condensate collecting tank and the spraying liquid storage tank.

Preferably, a vacuum pump is installed on the pipeline between the gas-liquid separator and the chimney.

Preferably, the level sensor is a drop-in intelligent level transmitter PCM 266.

Preferably, the blowdown valve is a PZ44H blowdown valve.

Preferably, the regulating valve is an electronic single-seat regulating valve LDZDL.

Preferably, the pipelines on both sides of the U-shaped submerged pipe are obliquely arranged.

A process for a steam reformer condensate collection and reuse system, comprising:

s1, starting the fluidized bed to operate;

s2, detecting the temperature of pipelines among all devices in real time;

s3, when the temperature rises to 60 ℃, the regulating valves are sequentially opened along the airflow direction in the pipeline to guide the condensate into the condensate collecting tank, and the drainage time of the condensate is 5-10S;

s4, repeating the step S3 when the temperature rises to 20 ℃ and does not exceed 150 ℃, and opening the adjusting valve in sequence along the airflow direction in the pipeline to guide the condensate into the condensate collecting tank, wherein the drainage time of the condensate is 5-10S;

s5, collecting the liquid level of the condensate in the condensate collecting tank in real time, and when the liquid level reaches an upper limit value, opening a drain valve to guide the condensate into a spray liquid storage tank;

and S6, finishing the operation, and introducing the condensate which is completely used into a sewage treatment center for treatment.

The condensate collecting and recycling system of the steam reforming device and the process method thereof provided by the invention have the following beneficial effects:

according to the temperature rising characteristic of the pipeline, the collecting time is set along the main flow direction of the airflow in the pipeline to collect the condensate in the relevant pipeline and equipment, the collected condensate is used for the post-spraying treatment of the waste gas, the condensate is recycled, the damage of the condensate to the equipment is reduced, and the condensate is utilized to a great extent.

Drawings

FIG. 1 is a block diagram of a steam reformer condensate collection and reuse system and process.

1. A water storage tank; 2. a steam superheater; 3. a fluidized bed; 4. a cyclone separator; 5. a high temperature filter; 6. a total oxidation furnace; 7. a spray tower; 8. a gas-liquid separator; 9. a chimney; 10. a spray liquid storage tank; 11. collecting and filling condensate; 12. a vacuum pump; 13. a first U-shaped water sinking section; 14. a second U-shaped water sinking section; 15. a third U-shaped water sinking section; 16. adjusting a valve; 17. a liquid level sensor; 18. a blowoff valve.

Detailed Description

The following description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and it will be apparent to those skilled in the art that various changes may be made without departing from the spirit and scope of the invention as defined and defined in the appended claims, and all matters produced by the invention using the inventive concept are protected.

According to an embodiment of the application, referring to fig. 1, the steam reformer condensate collecting and recycling system and the process method thereof comprise a fluidized bed 3, wherein the gas inlet end of the fluidized bed 3 is sequentially communicated with a steam superheater 2 and a water storage tank 1, and the gas outlet end of the fluidized bed 3 is sequentially communicated with a cyclone separator 4, a high-temperature filter 5, a total oxidation furnace 6, a spray tower 7 and a chimney 9.

The bottom of the fluidized bed 3 and the bottom of the high-temperature filter 5 are communicated with a condensate collecting tank 11 through pipelines, the condensate collecting tank 11 and the spray tower 7 are communicated with a spray liquid storage tank 10, and the bottom of the spray liquid storage tank 10 is communicated with a sewage treatment center through a pipeline.

The condensate in the fluidized bed 3 and the high-temperature filter 5 can be led into the condensate collecting tank 11 through pipelines, and the condensate in the condensate collecting tank 11 can provide water for the spray tower 7, so that the condensate can be recycled.

A first U-shaped submerged section 13 is arranged on a pipeline between the steam superheater 2 and the fluidized bed 3, a second U-shaped submerged section 14 is arranged on a pipeline between the cyclone separator 4 and the high-temperature filter 5, a third U-shaped submerged section 15 is arranged on a pipeline between the high-temperature filter 5 and the full-oxidation furnace 6, and the first U-shaped submerged section 13, the second U-shaped submerged section 14 and the third U-shaped submerged section 15 are all communicated with the condensate collecting tank 11; the pipelines at two sides of the U-shaped submerged pipe should have certain inclination, so that condensate of the pipelines at two sides can flow to the U-shaped submerged pipe under the condition of the self-gravity flow principle.

Besides, a liquid level sensor 17 is arranged in the condensate collecting tank 11 and used for detecting the liquid level of the condensate in the condensate collecting tank in real time, and when the liquid level reaches an upper limit value, the condensate is guided into the spraying liquid storage tank 10 to be recycled.

And regulating valves 16 are respectively arranged on the pipelines between the first U-shaped sinking section 13, the second U-shaped sinking section 14 and the third U-shaped sinking section 15 and the condensate collecting tank 11, and the regulating valves 16 are used for controlling and regulating the flow of the condensate in the pipeline.

A drain valve 18 is arranged on a pipeline between the condensate collecting tank 11 and the spray liquid storage tank 10 and is used for controlling the flow of the condensate led into the spray liquid storage tank 10.

A vacuum pump 12 is arranged on a pipeline between the gas-liquid separator 8 and the chimney 9, and the flue gas is discharged through the vacuum pump 12.

Wherein, the liquid level sensor 17 is a drop-in intelligent liquid level transmitter PCM 266; the blowdown valve 18 is a PZ44H blowdown valve 18; the regulating valve 16 is an electronic single seat regulating valve LDZDL.

The working principle of the invention is as follows:

the condensed water is the largest when the system is started and stopped, when the system is started, the whole pipeline is in a normal temperature state, the pipeline is slowly heated to more than 120 ℃ from the normal temperature in a steam preheating stage, in the process, mainly steam is cooled to become the condensed water, if the condensed water is not discharged in time, the condensed water is remained in the pipeline for a long time, and when a certain amount of the condensed water is reached, the condensed water flows to some key equipment such as a high-precision filter, so that the filtering precision and the service life are influenced, the temperature rising speed of the pipeline is reduced due to the existence of the condensed water, the startup preheating time is prolonged, the energy consumption is increased, and meanwhile, the idle work time of the equipment is prolonged. The condensate produced must be removed without the entire line reaching 120 c.

After the operation starts, all condensate collecting pipelines are controlled by the regulating valve 16 and are discharged at regular time, after the operation starts, the pipeline temperature is discharged at 60 ℃, the temperature is raised to 20 ℃ for one time, the temperature is up to more than 150 ℃, the liquid discharging time is not more than ten seconds, the liquid discharging sequence is discharged one by one according to the gas flow direction of the main pipeline, the discharged condensate flows to the condensate collecting tank for storage, when the level of the condensate collecting tank reaches the upper limit value, the information is fed back to the blow-down valve 18 through the liquid level sensor 17, and the condensate is discharged to the spray liquid storage tank 10.

The liquid of the spray liquid storage tank 10 mainly provides cooling water for the spray tower 7, after washing for a certain time, the liquid is discharged to a sewage treatment center for treatment, condensate enters the storage tank of the spray tower 7 and does not have any influence on the spray effect, and the condensate can be discharged to the sewage treatment center along with the spray liquid for treatment.

The system is adopted in the 1KG steam reforming test, the test completely meets the requirements, and the test data is as follows:

before and after the collection of the condensed water is set, due to the influence of the condensed water, the time for the pipeline to reach the set temperature after the startup is reduced to 1 hour from the original 2 hours, and the heating efficiency is doubled, so that the energy consumption of the steam generator is doubled;

before the condensation collection is not arranged originally, the condensed water is not discharged in time after the gas passes through the high-temperature filter 5, and the high-temperature filter is disassembled to find that the high-temperature filter is obviously rotten and the filtering surface is sticky (formed by mixing liquid and particles in the gas), so that the filtering precision, the efficiency and the service life of the high-temperature filter 5 are greatly reduced. After the condensation collection is set, the high-temperature filter 5 is disassembled for inspection, and no abnormality exists on the surface.

According to one embodiment of the present application, a process for a steam reformer condensate collection and reuse system, comprises:

s1, starting the fluidized bed 3 to operate;

s2, detecting the temperature of pipelines among all devices in real time;

s3, when the temperature rises to 60 ℃, the regulating valves 16 are sequentially opened along the airflow direction in the pipeline to guide the condensate into the condensate collecting tank, and the drainage time of the condensate is 5-10S;

s4, repeating the step S3 when the temperature rises to 20 ℃ and does not exceed 150 ℃, and opening the regulating valve 16 in sequence along the airflow direction in the pipeline to guide the condensate into the condensate collecting tank, wherein the drainage time of the condensate is 5-10S;

s5, collecting the condensate liquid level in the condensate collecting tank in real time, and when the liquid level reaches an upper limit value, opening the drain valve 18 to guide the condensate into the spray liquid storage tank 10;

and S6, finishing the operation, and introducing the condensate which is completely used into a sewage treatment center for treatment.

According to the temperature rising characteristic of the pipeline, the collecting time is set along the main flow direction of the airflow in the pipeline to collect the condensate in the relevant pipeline and equipment, the collected condensate is used for the post-spraying treatment of the waste gas, the condensate is recycled, the damage of the condensate to the equipment is reduced, and the condensate is utilized to a great extent.

While the embodiments of the invention have been described in detail in connection with the accompanying drawings, it is not intended to limit the scope of the invention. Various modifications and changes may be made by those skilled in the art without inventive step within the scope of the appended claims.