阅读说明：本技术 吸附系统的换热装置及方法 (Heat exchange device and method of adsorption system ) 是由 江荣方 刘桂林 施春荣 吴刚 赵建 詹水华 于 2019-11-18 设计创作，主要内容包括：本发明涉及一种吸附系统的换热装置,包括吸附柱,所述吸附柱包括换热管和用于固定换热管的管架,还包括储水罐和换热器,所述换热管、储水罐和换热器通过管路依次连接形成循环回路,所述储水罐和换热器之间设有水泵,所述换热器包括循环水进口、循环水出口、换热水进口和换热水出口。本发明通过换热器对吸附柱内的换热管的换热介质缓慢升温或者缓慢降温,大大降低温变产生的应力,从而从根本上避免急冷急热造成的设备损坏。(The invention relates to a heat exchange device of an adsorption system, which comprises an adsorption column, wherein the adsorption column comprises a heat exchange tube, a tube frame for fixing the heat exchange tube, a water storage tank and a heat exchanger, the heat exchange tube, the water storage tank and the heat exchanger are sequentially connected through a pipeline to form a circulation loop, a water pump is arranged between the water storage tank and the heat exchanger, and the heat exchanger comprises a circulating water inlet, a circulating water outlet, a heat exchange water inlet and a heat exchange water outlet. The invention can slowly raise or lower the temperature of the heat exchange medium of the heat exchange tube in the adsorption column through the heat exchanger, thereby greatly reducing the stress generated by temperature change and fundamentally avoiding equipment damage caused by rapid cooling and rapid heating.)

1. The utility model provides an adsorption system's heat transfer device, includes adsorption column (1), adsorption column (1) includes heat exchange tube (2) and pipe support (3) that are used for fixed heat exchange tube (2), its characterized in that: still include water storage tank (4) and heat exchanger (5), heat exchange tube (2), water storage tank (4) and heat exchanger (5) connect gradually through the pipeline and form circulation circuit, be equipped with water pump (6) between water storage tank (4) and heat exchanger (5), heat exchanger (5) are including circulating water import (5.1), circulating water export (5.2), heat transfer water import (5.3) and heat transfer water export (5.4).

2. The heat exchange device of an adsorption system according to claim 1, wherein: the heat exchange water inlet (5.3) is connected with a hot water source through a hot water inlet pipeline (7), the heat exchange water inlet (5.3) is connected with a cold water source through a cold water inlet pipeline (8), a hot water inlet valve (9) is arranged on the hot water inlet pipeline (7), and a cold water inlet valve (10) is arranged on the cold water inlet pipeline (8).

3. The heat exchange device of an adsorption system according to claim 1, wherein: the heat exchange water outlet (5.4) is respectively connected with a hot water outlet pipeline (11) and a cold water outlet pipeline (12), a hot water outlet valve (13) is arranged on the hot water outlet pipeline (11), and a cold water outlet valve (14) is arranged on the cold water outlet pipeline (12).

4. A heat exchange method of an adsorption system is characterized in that: use of the device according to one of claims 1 to 3, comprising the following steps:

step one, supplementing water to a water storage tank, starting a water pump, and operating circulating water in a circulating loop to exchange heat with an adsorption column;

step two, opening a cold water inlet valve during adsorption, cooling circulating water of the adsorption column, and controlling the cooling speed;

step three, when the temperature is cooled to the required temperature, closing a cold water inlet valve;

and step four, opening a hot water inlet valve during desorption, heating circulating water of the adsorption column, and controlling the heating speed.

5. The heat exchange method of the adsorption system according to claim 4, wherein: the cooling speed of the second step is set to be 0.5-10 ℃/min.

6. The heat exchange method of the adsorption system according to claim 4, wherein: the heating speed of the fourth step is set to be 0.5-10 ℃/min.

Technical Field

The invention relates to a heat exchange device and a heat exchange method of an adsorption system, belonging to the technical field of energy-saving and environment-friendly equipment.

Background

The adsorption system is applied to the fields of chemical industry, environmental protection, food and the like in a plurality of scenes. Gas purification (such as polysilicon hydrogen purification, chemical tail gas purification and the like), VOC waste gas treatment and the like all need to use an adsorption system or related processes. It is well known that the adsorption process is a strongly exothermic process, while the desorption process is a strongly endothermic process, and thus it is necessary to cool it while adsorbing, and to heat it while desorbing. At present, a heat exchange tube is added in an adsorption column, then cooling water or other materials with lower temperature are introduced to cool the adsorption column during adsorption, and high-temperature water or other materials with higher temperature are introduced to heat the adsorption column during desorption. When the adsorption is changed to desorption or the desorption is changed to adsorption, the material in the heat exchange tube can be suddenly heated or quenched, and the stress caused by the temperature difference easily cracks the joint of the heat exchange tube and the tube frame, so that equipment is damaged, and particularly when an adsorption system is used as an important or key device, the risk of sudden heating or quenching is very high. In order to solve the problems, part of manufacturers adopt a method of slowly feeding cooling or heating media into the adsorption column heat exchange tube, and the method can delay the service life of an adsorption system to a certain extent, but the treatment is not the primary and secondary treatment.

Disclosure of Invention

The invention aims to overcome the defects and provides a heat exchange device and a heat exchange method of an adsorption system.

The purpose of the invention is realized as follows:

the utility model provides an adsorption system's heat transfer device, includes the adsorption column, the adsorption column includes the heat exchange tube and is used for the pipe support of fixed heat exchange tube, still includes water storage tank and heat exchanger, heat exchange tube, water storage tank and heat exchanger connect gradually through the pipeline and form circulation circuit, be equipped with the water pump between water storage tank and the heat exchanger, the heat exchanger includes circulating water import, circulating water export, heat transfer water import and heat transfer water export.

Preferably, the heat exchange water inlet is connected with a hot water source through a hot water inlet pipeline, the heat exchange water inlet is connected with a cold water source through a cold water inlet pipeline, a hot water inlet valve is arranged on the hot water inlet pipeline, and a cold water inlet valve is arranged on the cold water inlet pipeline.

Preferably, the heat exchange water outlet is respectively connected with a hot water outlet pipeline and a cold water outlet pipeline, a hot water outlet valve is arranged on the hot water outlet pipeline, and a cold water outlet valve is arranged on the cold water outlet pipeline.

The heat exchange method of the adsorption system adopts the device, and comprises the following steps:

step one, supplementing water to a water storage tank, starting a water pump, and operating circulating water in a circulating loop to exchange heat with an adsorption column;

step two, opening a cold water inlet valve during adsorption, cooling circulating water of the adsorption column, and controlling the cooling speed;

step three, when the temperature is cooled to the required temperature, closing a cold water inlet valve;

and step four, opening a hot water inlet valve during desorption, heating circulating water of the adsorption column, and controlling the heating speed.

Preferably, the cooling speed of the second step is set to be 0.5-10 ℃/min.

Preferably, the heating speed of the fourth step is set to be 0.5-10 ℃/min.

The invention has the beneficial effects that:

the invention can slowly raise or lower the temperature of the heat exchange medium of the heat exchange tube in the adsorption column through the heat exchanger, thereby greatly reducing the stress generated by temperature change and fundamentally avoiding equipment damage caused by rapid cooling and rapid heating.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Wherein: an adsorption column 1; a heat exchange pipe 2; a pipe frame 3; a water storage tank 4; a heat exchanger 5; a circulating water inlet 5.1; a circulating water outlet 5.2; a heat exchange water inlet 5.3; a heat exchange water outlet 5.4; a water pump 6; a hot water inlet line 7; a cold water inlet line 8; a hot water inlet valve 9; a cold water inlet valve 10; a hot water outlet line 11; a cold water outlet line 12; a hot water outlet valve 13; a cold water outlet valve 14.

Detailed Description

Referring to fig. 1, a heat transfer device of adsorption system, including adsorption column 1, adsorption column 1 includes heat exchange tube 2 and the pipe support 3 that is used for fixed heat exchange tube 2, still includes water storage tank 4 and heat exchanger 5, heat exchange tube 2, water storage tank 4 and heat exchanger 5 connect gradually through the pipeline and form circulation circuit, be equipped with water pump 6 between water storage tank 4 and the heat exchanger 5, heat exchanger 5 includes circulating water import 5.1, circulating water export 5.2, heat transfer water import 5.3 and heat transfer water export 5.4.

The heat exchange water inlet 5.3 is connected with a hot water source through a hot water inlet pipeline 7, the heat exchange water inlet 5.3 is connected with a cold water source through a cold water inlet pipeline 8, a hot water inlet valve 9 is arranged on the hot water inlet pipeline 7, and a cold water inlet valve 10 is arranged on the cold water inlet pipeline 8.

The heat exchange water outlet 5.4 is respectively connected with a hot water outlet pipeline 11 and a cold water outlet pipeline 12, a hot water outlet valve 13 is arranged on the hot water outlet pipeline 11, and a cold water outlet valve 14 is arranged on the cold water outlet pipeline 12.

The heat exchange method of the adsorption system adopts the device, and comprises the following steps:

step one, supplementing water to a water storage tank, starting a water pump, and operating circulating water in a circulating loop to exchange heat with an adsorption column;

and step two, opening a cold water inlet valve during adsorption, and performing heat exchange and cooling on the circulating water of the adsorption column by a cold water source at the cooling speed of 0.5-10 ℃/min. (ii) a

Step three, when the temperature is cooled to the required temperature, closing a cold water inlet valve;

and step four, opening a hot water inlet valve during desorption, and performing heat exchange heating on the circulating water of the adsorption column by using a hot water source at the heating speed of 0.5-10 ℃/min.

The heat exchange is carried out on the circulating water through the heat exchanger, the heat exchange speed is controlled, indirect heat exchange on the adsorption column is realized, the circulating water in the heat exchange tube is slowly heated up or slowly cooled down, the stress generated by temperature change is greatly reduced, quick heating or quick cooling is avoided, and the service life of the equipment is prolonged.

In addition to the above embodiments, the present invention also includes other embodiments, and any technical solutions formed by equivalent transformation or equivalent replacement should fall within the scope of the claims of the present invention.