A kind of production waste heat utilization's blast type zero gas consumption adsorption dryer

Abstract

The application discloses a kind of production waste heat utilization's blast type zero gas consumption adsorption dryer, including adsorption tower, regeneration tower, adsorption pipeline, regeneration pipeline equipped with tube heat exchanger, pressure equalization pipeline.Adsorption tower and regeneration tower adopt parallel connection mode, air inlet and outlet are connected with adsorption tower and regeneration tower by adsorption pipeline respectively, regeneration pipeline is connected with upper and lower end of adsorption tower and regeneration tower, regeneration pipeline is equipped with air blower and parallel heater, cooler, air pipeline is connected with cold fluid pipeline of tube heat exchanger in series before heater front end, and hot fluid pipeline of tube heat exchanger is connected with waste heat pipeline generated by other production equipment.The air of the application suction dryer is first passed through waste heat generated by other production equipment to improve temperature by convection heat exchange in regeneration process, and then further heated by heater to reach regeneration temperature, so that waste heat resource in production process is utilized, and energy consumption of suction dryer itself is reduced.The application has simple equipment structure, good adsorption effect, fast regeneration speed, high production efficiency, does not consume finished product gas, can effectively reduce process energy consumption while ensuring drying air quality, and meets the requirement of national green development planning for energy saving and emission reduction.

Description

Technical Field

[0001] This invention relates to the field of adsorption dryer technology, specifically to a blower-type zero-gas-consumption adsorption dryer that utilizes waste heat from production. Background Technology

[0002] With the continuous improvement of industrial technology, compressed air has become an important power source, widely used in petrochemical, metallurgical, defense and other industries. The moisture content of compressed air is a key indicator for measuring its quality. When the moisture content is too high, it often has a serious adverse effect on production equipment and product quality. Therefore, it is necessary to dry the compressed air.

[0003] Adsorption dryers are commonly used drying equipment for compressed air. They utilize adsorbents packed within the equipment to adsorb moisture from compressed air, and then regenerate and reactivate the adsorbent for reuse. Based on the adsorbent regeneration method, adsorption dryers can be classified into heatless regeneration adsorption dryers, micro-heat regeneration adsorption dryers, and forced-air hot regeneration adsorption dryers. Heatless and micro-heat regeneration adsorption dryers require desorption and regeneration of the adsorbent through the drying of the finished air; although energy consumption is relatively low, they consume a large amount of finished air. Forced-air hot regeneration adsorption dryers can achieve zero loss of finished air, but the temperature required for adsorbent regeneration is high, resulting in high energy consumption and making it difficult to meet energy-saving and environmental protection requirements.

[0004] Meanwhile, in industrial production, in addition to adsorption dryers, other production equipment is also needed, such as air compressors and boilers. During the operation of these devices, a large amount of waste heat is generated. Therefore, how to make reasonable use of these waste heat resources is also a key issue for industrial production to achieve energy conservation and environmental protection. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a blower-type zero-gas-consumption adsorption dryer for utilizing production waste heat.

[0006] To achieve the objectives of this invention, the following technical solution is adopted: A blower-type zero-air-consumption adsorption dryer for utilizing waste heat from production is characterized by comprising an adsorption tower, a regeneration tower, adsorption pipelines, a regeneration pipeline equipped with a shell-and-tube heat exchanger, and a pressure equalization pipeline. The adsorption tower and regeneration tower are connected in parallel. The air inlet and outlet are connected to the adsorption tower and regeneration tower respectively via the adsorption pipelines. The regeneration pipeline is connected to the upper and lower ends of the adsorption tower and regeneration tower. The regeneration pipeline is equipped with a blower and a heater and cooler connected in parallel. At the front end of the heater, the air pipeline is connected in series with the cold fluid pipeline of the shell-and-tube heat exchanger. The hot fluid pipeline of the shell-and-tube heat exchanger is connected to waste heat pipelines generated by other production equipment. The waste heat provides a temperature range of 80-120℃, and the heater provides a temperature range of 150-200℃.

[0007] The adsorption tower and regeneration tower are equipped with pressure relief valves at their lower ends.

[0008] The air inlet is equipped with an air filter.

[0009] The other production equipment mentioned are equipment that generates waste heat, such as air compressors and boilers.

[0010] Compared with existing technologies, this invention provides a blower-type zero-air-consumption adsorption dryer that utilizes waste heat from production processes, offering the following advantages: During the regeneration process, the air in this dryer first undergoes convective heat exchange with waste heat generated by other production equipment to raise its temperature, and then is further heated by a heater to reach the regeneration temperature. This utilizes waste heat resources from the production process while reducing the energy consumption of the dryer itself. The equipment of this invention has a simple structure, excellent adsorption effect, fast regeneration speed, high production efficiency, and does not consume finished product gas. While ensuring the quality of the dried air, it effectively reduces process energy consumption, meeting the requirements of the national green development plan for energy conservation and emission reduction. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of a blower-type zero-gas-consumption adsorption dryer for utilizing production waste heat, as per this invention patent. Detailed Implementation

[0012] To make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be described in further detail below.

[0013] See Figure 1 As shown, a blower-type zero-air-consumption adsorption dryer for utilizing production waste heat includes an adsorption tower 1, a regeneration tower 2, an adsorption pipeline 3, a regeneration pipeline 4 equipped with a shell-and-tube heat exchanger, and a pressure equalization pipeline 5. The adsorption tower 1 and regeneration tower 2 are connected in parallel. The air inlet and outlet are connected to the adsorption tower 1 and regeneration tower 2 respectively via the adsorption pipeline 3. The regeneration pipeline 4 connects to the upper and lower ends of the adsorption tower 1 and regeneration tower 2. The regeneration pipeline is equipped with a blower 6 and a heater 7 and a cooler 8 connected in parallel. At the front end of the heater, the air pipeline is connected in series with the cold fluid pipeline of the shell-and-tube heat exchanger 9. The hot fluid pipeline of the shell-and-tube heat exchanger is connected to waste heat pipelines generated by other production equipment. The temperature range provided by the waste heat is 80-120℃, and the temperature range provided by the heater is 150-200℃.

[0014] The adsorption tower and regeneration tower are equipped with pressure relief valves 10 at their lower ends.

[0015] The air inlet is equipped with an air filter.

[0016] The other production equipment mentioned are equipment that generates waste heat, such as air compressors and boilers. Example

[0017] During operation, the opening timing of the solenoid valves installed on each pipeline is set via a controller (not shown) to perform adsorption and regeneration operations. During adsorption, compressed air enters from the inlet, passes through adsorption pipeline 3 to adsorption tower 1 for drying and purification, and is then transported to the gas-using site via adsorption pipeline 3. During regeneration, blower 6 is turned on, and the air, under the action of the blower, exchanges convective heat with waste heat (80℃) through the tubular heat exchanger 9, then further heats up to 150℃ through heater 7, and then passes through regeneration pipeline 4 to regeneration tower 2. After heating and regeneration are completed, the pipeline valves before the tubular heat exchanger and heater, as well as the regeneration waste gas outlet valve, are closed. This allows the gas inside the regeneration tower to be cooled by the blower through the cooler in a reverse internal circulation, achieving the working conditions required for the next adsorption cycle. Adsorption and regeneration operations can be performed simultaneously, and then adsorption tower 1 and regeneration tower 2 can be switched for alternating operation. Example

[0018] During operation, the opening timing of the solenoid valves installed on each pipeline is set via a controller (not shown) to perform adsorption and regeneration operations. During adsorption, compressed air enters from the inlet, passes through adsorption pipeline 3 to adsorption tower 1 for drying and purification, and is then transported to the gas-using site via adsorption pipeline 3. During regeneration, blower 6 is turned on, and the air, under the action of the blower, exchanges convective heat with waste heat (temperature 120℃) through the tubular heat exchanger 9, then further heats up to 200℃ through heater 7, and then passes through regeneration pipeline 4 to regeneration tower 2. After heating and regeneration are completed, the pipeline valves before the tubular heat exchanger and heater, as well as the regeneration waste gas outlet valve, are closed. This allows the gas inside the regeneration tower to be cooled by the blower through the cooler in a reverse internal circulation, achieving the working conditions required for the next adsorption cycle. Adsorption and regeneration operations can be performed simultaneously, and then adsorption tower 1 and regeneration tower 2 can be switched for alternating operation.

[0019] The above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A blower-type zero-gas-consumption adsorption dryer for utilizing production waste heat, characterized in that, The system includes an adsorption tower, a regeneration tower, adsorption piping, a regeneration piping equipped with a shell-and-tube heat exchanger, and a pressure equalization piping. The adsorption tower and regeneration tower are connected in parallel. The air inlet and outlet are connected to the adsorption tower and regeneration tower respectively via adsorption piping. The regeneration piping connects to the upper and lower ends of the adsorption tower and regeneration tower. The regeneration piping is equipped with a blower and parallel heaters and coolers. At the front end of the heater, the air piping is connected in series with the cold fluid piping of the shell-and-tube heat exchanger. The hot fluid piping of the shell-and-tube heat exchanger is connected to waste heat piping generated by other production equipment. The waste heat provides a temperature range of 80-120℃, and the heater provides a temperature range of 150-200℃.

2. The blower-type zero-gas-consumption adsorption dryer for utilizing production waste heat according to claim 1, characterized in that, The adsorption tower and regeneration tower are equipped with pressure relief valves at their lower ends.

3. The blower-type zero-gas-consumption adsorption dryer for utilizing production waste heat according to claim 1, characterized in that, The air inlet is equipped with an air filter.

4. The blower-type zero-gas-consumption adsorption dryer for utilizing production waste heat according to claim 1, characterized in that, The other production equipment mentioned are equipment that generates waste heat, such as air compressors and boilers.

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