CN217520085U

CN217520085U - Flue gas-steam combined driven open type absorption heat pump unit

Info

Publication number: CN217520085U
Application number: CN202221411529.9U
Authority: CN
Inventors: 徐敬玉; 白亮; 赵怀超; 王旭; 赵晓光
Original assignee: Haomu Shanghai Energy Saving Technology Co ltd
Current assignee: Haomu Shanghai Energy Saving Technology Co ltd
Priority date: 2022-06-07
Filing date: 2022-06-07
Publication date: 2022-09-30
Anticipated expiration: 2032-06-07

Abstract

The utility model discloses a flue gas-steam combined driven open absorption heat pump unit, belongs to energy equipment technical field, this flue gas-steam combined driven open absorption heat pump unit, including evaporimeter and solution phase change unit, the inside of evaporimeter through the flow divider with the inside of solution phase change unit communicates, the hygroscopic solution after the entrance point switch-on of solution phase change unit dilutes, and high temperature flue gas gets into the inside of solution phase change unit, gives hygroscopic solution with heat exchange, gets into the inside of evaporimeter through the flow divider, utilizes steam to heat again and carries out the concentration; the dilute solution of flue gas will be handled to this device passes through solution phase transition unit earlier and preheats the back reentrant evaporimeter, reduces the drive steam quantity, has reduced the equipment evaporation rate, has promoted the security of system.

Description

Flue gas-steam combined driven open type absorption heat pump unit

Technical Field

The utility model belongs to the technical field of energy equipment, concretely relates to flue gas-steam combined driven open absorption heat pump unit.

Background

The existing heat pump units are various in forms, most of adopted single-unit compression and multi-stage compression steam provide power, but the heating of the heater to the solution is more uniform and reliable, the heating effect is realized by adopting a mode of introducing steam at present, the same condenser also realizes the condensation effect by inputting cooling water, but the heating and condensation effects are only less through the energy provided by the steam, certain loss exists, and the energy-saving and environment-friendly effects are not facilitated.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a flue gas-steam combined drive's open absorption heat pump unit to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the inside of the evaporator is communicated with the inside of the solution phase change unit through a shunt valve, the inlet end of the solution phase change unit is communicated with a diluted hygroscopic solution, high-temperature flue gas enters the inside of the solution phase change unit, heat is exchanged to the hygroscopic solution, the high-temperature flue gas enters the inside of the evaporator through the shunt valve, and the high-temperature flue gas is heated and concentrated by utilizing steam.

Preferably, the inside of the solution phase change unit is further connected with a heat exchanger a through the diverter valve, hygroscopic solution enters the inside of the heat exchanger a after being diverted at the position of the diverter valve, and the inside of the heat exchanger a is further communicated with a liquid storage tank.

Preferably, the interior of the liquid storage tank is communicated with the interior of the solution phase change unit.

Preferably, the inside of the evaporator is communicated with the inside of a separator, the inside of the separator is communicated with the inside of the heat exchanger a, the separator performs gas-liquid separation on a gas-liquid mixture, and liquid enters the inside of the heat exchanger a.

Preferably, the separator is also communicated with a secondary steam condenser, the gas-liquid mixture enters the separator for separation, and the steam enters the secondary steam condenser for secondary heat exchange.

Preferably, including absorption tower A and absorption tower B, the internally mounted hygroscopicity solution shower of absorption tower B, hygroscopicity solution whereabouts circulation gets into the inside of liquid reserve tank, the internally mounted clear water shower of absorption tower A, low temperature flue gas pass through in proper order absorption tower A with absorption tower B.

Preferably, a self-circulating pump is installed outside the absorption tower a, and clean water enters the inside of the absorption tower a again through the self-circulating pump for recycling.

Preferably, the inside of the liquid storage tank is further communicated with a heat exchanger B, and the hygroscopic solution passes through the inside of the heat exchanger B and enters the inside of the absorption tower B again.

Preferably, a gas lift device is installed between the absorption tower A and the absorption tower B.

Preferably, an inclined liquid collecting tank is arranged in the air lifting device so as to collect liquid, and the liquid storage tank is arranged at the lowest end position of the air lifting device and is communicated with the air lifting device through a return pipe.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the dilute solution after the flue gas treatment is preheated by the solution phase change unit and then enters the evaporator, so that the consumption of driving steam is reduced, the evaporation rate of equipment is reduced, and the safety of the system is improved.

2. The integrated system is coupled with the solution phase change system, so that the influence of adverse factors such as overhigh cold source temperature, overlow inlet smoke temperature and the like on the waste heat recovery amount is weakened, and the applicability of the system is improved.

3. And carrying out thermal control feedback according to the temperature and the flow of the high-temperature flue gas and the temperature of the solution preheated by the phase-change heat exchanger unit, and adjusting the amount of the solution entering the evaporator through an adjusting valve in the flow dividing device to ensure that the optimal running state of the system is ensured.

Drawings

Fig. 1 is a schematic structural diagram of an open absorption heat pump unit driven by flue gas and steam in a combined manner according to the present invention.

In the figure: 1. an evaporator; 2. a solution phase change unit; 3. a flow divider valve; 4. a heat exchanger A; 5. a liquid storage tank; 6. a separator; 7. a secondary steam condenser; 8. an absorption tower A; 9. an absorption tower B; 10. a self-circulating pump; 11. a heat exchanger B; 12. an air lift device.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, the present invention provides a technical solution: the utility model provides a flue gas-steam combined drive's open absorption heat pump unit, includes evaporimeter 1 and solution phase change unit 2, the inside of evaporimeter 1 through flow divider 3 with the inside intercommunication of solution phase change unit 2, the hygroscopic solution after the entrance point switch-on of solution phase change unit 2 is diluted, and high temperature flue gas gets into the inside of solution phase change unit 2 is given hygroscopic solution with heat exchange, through flow divider 3 gets into the inside of evaporimeter 1 utilizes steam to heat again and carries out the heating and concentrate.

In this embodiment, through the dilute solution that will handle the flue gas earlier through solution phase change unit 2 preheat the back reentrant evaporimeter 1, reduce the drive steam quantity, reduced the equipment evaporation rate, promoted the security of system.

Specifically, the inside of the solution phase change unit 2 is further connected with a heat exchanger a4 through the diverter valve 3, the hygroscopic solution is diverted at the position of the diverter valve 3 and then enters the inside of the heat exchanger a4, and the inside of the heat exchanger a4 is further communicated with a liquid storage tank 5.

In this embodiment, 5 partial solutions in liquid reserve tank send into solution phase change heat exchanger unit 2 earlier, preheat back solution temperature according to high temperature flue gas temperature, flow and phase change heat exchanger unit 2 and carry out the thermal control feedback, adjust the solution volume that gets into evaporimeter 1 through flow divider 3, guarantee to take place the best running state of system.

Specifically, the interior of the liquid storage tank 5 is communicated with the interior of the solution phase change unit 2.

In this embodiment, send into 5 partial solutions of liquid reserve tank earlier inside and the heat transfer of high temperature flue gas of solution phase change heat exchanger group 2 and heat up, the solution after preheating is sent into again evaporimeter 1 concentration.

Specifically, the inside of the evaporator 1 communicates with the inside of a separator 6, the inside of the separator 6 communicates with the inside of the heat exchanger a4, the separator 6 separates a gas-liquid mixture into a liquid and a gas, and the liquid enters the inside of the heat exchanger a 4.

In this embodiment, the gas-liquid separation can be realized, the moisture in the hygroscopic solution is separated in the form of steam, the solution concentration is realized, and the solution is refluxed to the heat exchanger a 4.

Specifically, the inside of the separator 6 is also communicated with a secondary steam condenser 7, a gas-liquid mixture enters the inside of the separator 6 for separation, and steam enters the inside of the secondary steam condenser 7 for heat exchange with cold source water again.

In this embodiment, the heat exchange between the inside of the steam entering the secondary steam condenser 7 and the cold source water can be realized again.

Specifically, including absorption tower A8 and absorption tower B9, the internally mounted hygroscopicity solution shower of absorption tower B9, hygroscopicity solution whereabouts circulation gets into the inside of liquid reserve tank 5, the internally mounted clear water shower of absorption tower A8, low temperature flue gas pass through in proper order absorption tower A8 with absorption tower B9.

In the embodiment, the absorption tower A8 sprays and washes low-temperature flue gas, and adsorbs impurities such as sulfide and dust particles in the flue gas; the absorption tower B9 directly contacts with low temperature flue gas through strong hygroscopic solution to generate heat and mass exchange, absorb moisture and latent heat of vaporization in the flue gas, and the treated clean dry flue gas is discharged through the absorption tower

Specifically, a self-circulation pump 10 is installed outside the absorption tower A8, and clean water enters the absorption tower A8 again through the self-circulation pump 10 for recycling.

In this example, the low-temperature flue gas is sprayed and washed by the bottom solution extracted from the circulating pump 10 of the absorption tower A8.

Specifically, the inside of the liquid storage tank 5 is also communicated with a heat exchanger B11, and the hygroscopic solution passes through the inside of the heat exchanger B11 and enters the inside of the absorption tower B9 again.

In the embodiment, the flue gas directly contacts with the low-temperature flue gas to generate heat and mass exchange, and the moisture and the latent heat of vaporization in the flue gas are absorbed.

Specifically, a gas lift device 12 is arranged between the absorption tower A8 and the absorption tower B9.

In this embodiment, the low-temperature flue gas can rise to the section B from the section a, and the solution in the section B cannot fall to the section a, is collected at the gas raising device, and flows back to the solution tank through the return pipe.

Specifically, an inclined liquid collecting tank is arranged in the gas lifting device 12 so as to collect liquid, and the liquid storage tank 5 is arranged at the lowest end position of the gas lifting device 12 and is communicated with the gas lifting device through a return pipe.

In this embodiment, the solution can be returned into the liquid storage tank 5 along the gas lifting device 12.

The working principle is as follows: the solution phase change heat exchanger unit 2, the heat exchanger A4, the separator 6, the evaporator 1 and the secondary steam condenser 7 form a generating part for concentrating the solution at the position B9 of the absorption tower; part of solution in the extraction liquid storage tank 5 is sent into the solution phase change heat exchanger unit 2, exchanges heat with high-temperature flue gas and is heated, and the preheated solution is sent into the evaporator 1 for concentration; according to the temperature, flow and phase change of high-temperature flue gas, the solution temperature after the heat exchange unit is preheated is subjected to thermal control feedback and enters the evaporator 1 through the flow divider valve 3 to achieve the optimal operation state

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a flue gas-steam combined drive's open absorption heat pump unit which characterized in that: the device comprises an evaporator (1) and a solution phase change unit (2), wherein the inside of the evaporator (1) is communicated with the inside of the solution phase change unit (2) through a diverter valve (3), a hygroscopic solution is communicated with the inlet end of the solution phase change unit (2), high-temperature flue gas enters the inside of the solution phase change unit (2), heat is exchanged for the hygroscopic solution, the heat enters the inside of the evaporator (1) through the diverter valve (3), and the steam is used for heating and concentrating.

2. The open absorption heat pump unit driven by combination of flue gas and steam as claimed in claim 1, wherein: the inside of the solution phase change unit (2) is further connected with a heat exchanger A (4) through the diverter valve (3), hygroscopic solution enters the inside of the heat exchanger A (4) after being diverted at the position of the diverter valve (3), and the inside of the heat exchanger A (4) is further communicated with a liquid storage tank (5).

3. The flue gas-steam combined driven open absorption heat pump unit according to claim 2, wherein: the interior of the liquid storage tank (5) is communicated with the interior of the solution phase change unit (2).

4. The flue gas-steam combined driven open absorption heat pump unit according to claim 2, wherein: the interior of the evaporator (1) is communicated with the interior of a separator (6), the interior of the separator (6) is communicated with the interior of the heat exchanger A (4), the separator (6) is used for carrying out gas-liquid separation on a gas-liquid mixture, and liquid enters the interior of the heat exchanger A (4).

5. The flue gas-steam combined driven open absorption heat pump unit according to claim 4, wherein: the separator (6) is also communicated with a secondary steam condenser (7), a gas-liquid mixture enters the separator (6) for separation, and steam enters the secondary steam condenser (7) for secondary heat exchange.

6. The open absorption heat pump unit driven by combination of flue gas and steam as claimed in claim 3, wherein: including absorption tower A (8) and absorption tower B (9), the internally mounted hygroscopicity solution shower of absorption tower B (9), hygroscopicity solution whereabouts circulation gets into the inside of liquid reserve tank (5), the internally mounted clear water shower of absorption tower A (8), low temperature flue gas pass through in proper order absorption tower A (8) with absorption tower B (9).

7. The flue gas-steam combined driven open absorption heat pump unit according to claim 6, wherein: and a self-circulating pump (10) is installed on the outer side of the absorption tower A (8), and clean water enters the inside of the absorption tower A (8) again through the inside of the self-circulating pump (10) for recycling.

8. The open absorption heat pump unit driven by combination of flue gas and steam as claimed in claim 6, wherein: the inside of the liquid storage tank (5) is also communicated with a heat exchanger B (11).

9. The open absorption heat pump unit driven by combination of flue gas and steam as claimed in claim 6, wherein: and an air lifting device (12) is arranged between the absorption tower A (8) and the absorption tower B (9).

10. The open absorption heat pump unit driven by combination of flue gas and steam as claimed in claim 9, wherein: an inclined liquid collecting groove is formed in the air lifting device (12) so as to collect liquid, and the liquid storage tank (5) is installed at the lowest end position of the air lifting device (12) and is communicated with the air lifting device through a return pipe.