CN210278287U - Heating medium heating system based on process tower and ethylene glycol evaporator - Google Patents

Abstract

The utility model discloses a heat medium heating system based on technology tower and ethylene glycol evaporimeter, including the ethylene glycol evaporimeter, the technology tower, heat medium inlet manifold and heat medium outlet manifold, heat medium inlet manifold is through the heat medium access connection of first heat medium pipeline with the ethylene glycol evaporimeter, heat medium outlet manifold is through the heat medium exit linkage of second heat medium pipeline with the ethylene glycol evaporimeter, be equipped with first circulating pump on the first heat medium pipeline, heat medium inlet manifold is through the heat medium access connection of third heat medium pipeline with the technology tower, heat medium outlet manifold is through the heat medium exit linkage of fourth heat medium pipeline with the technology tower, be equipped with the second circulating pump on the third heat medium pipeline, third heat medium pipeline still is through the heat medium access connection of fifth heat medium pipeline with the ethylene glycol evaporimeter. The heating medium heating system based on the process tower and the ethylene glycol evaporator is beneficial to energy conservation and consumption reduction.

Description

Heating medium heating system based on process tower and ethylene glycol evaporator

The technical field is as follows:

the utility model relates to a polyester production field specifically says a heat medium heating system based on technology tower and ethylene glycol evaporimeter.

Background art:

at present, in a polyester production device in China, a process tower and a heating medium heating system of an ethylene glycol evaporator are independent, namely, two sets of heating medium heating systems are needed, so that the cost is high, and the energy conservation and consumption reduction are not facilitated.

The utility model has the following contents:

the utility model aims to solve the technical problem that a heat medium heating system based on technology tower and ethylene glycol evaporimeter that helps energy saving and consumption reduction is provided, this heat medium heating system can supply technology tower and ethylene glycol evaporimeter's use simultaneously.

The utility model provides a heat medium heating system based on a process tower and an ethylene glycol evaporator, which comprises an ethylene glycol evaporator, a process tower, a heat medium inlet header pipe and a heat medium outlet header pipe, wherein the heat medium inlet header pipe is connected with a heat medium inlet of the ethylene glycol evaporator through a first heat medium pipeline, the heat medium outlet header pipe is connected with a heat medium outlet of the ethylene glycol evaporator through a second heat medium pipeline, the first heat medium pipeline is provided with a first circulating pump, the heat medium inlet header pipe is connected with the heat medium inlet of the process tower through a third heat medium pipeline, the heat medium outlet header pipe is connected with the heat medium outlet of the process tower through a fourth heat medium pipeline, the third heat medium pipeline is provided with a second circulating pump, the third heat medium pipeline is connected with the heat medium inlet of the ethylene glycol evaporator through a fifth heat medium pipeline, the heat medium outlet of the ethylene glycol evaporator is connected with the fourth heat medium pipeline through a sixth heat medium pipeline, the second heat medium pipeline is connected with an inlet of the first circulating pump through the first circulating heat medium pipe, the fourth heat medium pipeline is connected with an inlet of the second circulating pump through the second circulating heat medium pipe, the first heat medium pipeline is provided with a first regulating valve and a second regulating valve respectively, the second heat medium pipeline and the fourth heat medium pipeline are provided with a first switch valve and a second switch valve respectively, the fifth heat medium pipeline is provided with a third regulating valve, the first regulating valve is positioned between the first circulating pump and the heat medium inlet header pipe, the second regulating valve is positioned between the second circulating pump and the heat medium inlet header pipe, the first switch valve is positioned between the heat medium outlet header pipe and the joint of the first circulating heat medium pipe and the second heat medium pipeline, and the second switch valve is positioned between the heat medium outlet header pipe and the joint of the second circulating heat medium pipe and the joint of the fourth heat medium pipeline.

Compared with the prior art after the structure more than adopting, the utility model has the advantages of it is following: considering that the temperature difference between the ethylene glycol evaporator and the process tower is not large, the temperature of the heat medium is adjusted by adjusting the opening degree of the valve, so that the ethylene glycol evaporator and the process tower can share one set of heat medium heating system.

Description of the drawings:

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

The specific implementation mode is as follows:

the invention will be further explained with reference to the drawings and the detailed description below:

as shown in fig. 1, a heating medium heating system based on a process tower and an ethylene glycol evaporator comprises an ethylene glycol evaporator 1, a process tower 2, a heating medium inlet header 3 and a heating medium outlet header 4, wherein the heating medium inlet header 3 is connected with a heating medium inlet of the ethylene glycol evaporator 1 through a first heating medium pipeline 11, the heating medium outlet header 4 is connected with a heating medium outlet of the ethylene glycol evaporator 1 through a second heating medium pipeline 12, a first circulating pump 21 is arranged on the first heating medium pipeline 11, the heating medium inlet header 3 is connected with a heating medium inlet of the process tower 2 through a third heating medium pipeline 13, the heating medium outlet header 4 is connected with a heating medium outlet of the process tower 2 through a fourth heating medium pipeline 14, a second circulating pump 22 is arranged on the third heating medium pipeline 13, the third heating medium pipeline 13 is further connected with a heating medium inlet of the ethylene glycol evaporator 1 through a fifth heating medium pipeline 15, a heating medium outlet of the ethylene glycol evaporator 1 is further connected with a fourth heating medium pipeline 14 through a sixth heating medium pipeline 16, the second heat medium pipe 12 is connected to an inlet of the first circulation pump 21 through the first circulation heat medium pipe 17, the fourth heat medium pipe 14 is connected to an inlet of the second circulation pump 22 through the second circulation heat medium pipe 18, the first heat medium pipe 11, the third heat medium pipe 13 is provided with a first regulating valve 41 and a second regulating valve 42, the second heat medium pipe 12 and the fourth heat medium pipe 14 are provided with a first switching valve 51 and a second switching valve 52, the fifth heat medium pipe 15 is provided with a third regulating valve 43, wherein the first regulating valve 41 is positioned on a connecting pipe between the first circulation pump 21 and the heat medium inlet header 3, the second regulating valve 42 is positioned on a connecting pipe between the second circulation pump 22 and the heat medium inlet header 3, the first switching valve 51 is positioned on a connecting pipe between the heat medium outlet header 4 and a connecting pipe between the first circulation heat medium pipe 17 and the second heat medium pipe 12, and the second switching valve 52 is positioned on a connecting pipe between the heat medium outlet header 4 and the second circulation heat medium pipe 18 and the fourth heat medium pipe 14 On the connecting tube. It should be appreciated that the source of the heating medium for the heating medium inlet manifold is a heating medium furnace.

Because the working temperatures of the ethylene glycol evaporator and the process tower are almost the same, if the temperature of the heat medium entering the process tower needs to be controlled at about 250 ℃, the temperature of the heat medium exiting the process tower is about 230 ℃, meanwhile, the temperature of the heat medium entering the ethylene glycol evaporator needs to be controlled at 250, and meanwhile, the temperature of the heat medium inlet main pipe is about 310 ℃, when stable production is carried out, the low-temperature heat medium exiting the ethylene glycol evaporator can enter the ethylene glycol evaporator (the final temperature can be adjusted by adjusting the valve position of the first adjusting valve) after the low-temperature heat medium entering the ethylene glycol evaporator is mixed with the high-temperature heat medium of the heat medium inlet main pipe through the second heat medium pipeline (the first switch valve needs to be closed at this time), and the low-temperature heat medium exiting the ethylene glycol evaporator can also be circulated to the ethylene glycol evaporator through the first circulating pump by selecting the second heat medium pipeline (the first switch valve needs to be closed at this time), and the high-temperature heat medium exiting the fifth heat medium pipeline or the high-temperature heat medium exiting the process tower and the ethylene glycol evaporator are matched The mixed heating media of the low-temperature heating media (at the moment, the second switch valve is closed) are mixed and then enter the ethylene glycol evaporator; similarly, the heat medium entering the process tower can also control the high-temperature heat medium flowing through the third heat medium pipeline by adjusting the second switch valve, the low-temperature heat medium coming from the process tower heat medium outlet (the second switch valve is closed at the moment) and the low-temperature heat medium coming from the ethylene glycol evaporator are mixed, and the temperature control is realized, so that the low-temperature heat medium is recycled, the use amount of the high-temperature heat medium is reduced, the pipelines are saved, an independent heat medium heating system is omitted, the investment cost is low, and the temperature difference and the heat balance are realized through the flow difference of the pipelines. The system is beneficial to energy conservation and consumption reduction, and has low investment cost.

The foregoing is illustrative of the preferred embodiments of the present invention only, and is not to be construed as limiting the claims. All the equivalent structures or equivalent flow changes made by using the contents of the specification and the attached drawings of the utility model are included in the patent protection scope of the utility model.

Claims (1)

1. The utility model provides a heat medium heating system based on technology tower and ethylene glycol evaporimeter, includes ethylene glycol evaporimeter, technology tower, heat medium inlet manifold and heat medium outlet manifold, its characterized in that: the heat medium inlet main pipe is connected with a heat medium inlet of the ethylene glycol evaporator through a first heat medium pipeline, the heat medium outlet main pipe is connected with a heat medium outlet of the ethylene glycol evaporator through a second heat medium pipeline, a first circulating pump is arranged on the first heat medium pipeline, the heat medium inlet main pipe is connected with a heat medium inlet of the process tower through a third heat medium pipeline, the heat medium outlet main pipe is connected with a heat medium outlet of the process tower through a fourth heat medium pipeline, a second circulating pump is arranged on the third heat medium pipeline, the third heat medium pipeline is further connected with a heat medium inlet of the ethylene glycol evaporator through a fifth heat medium pipeline, a heat medium outlet of the ethylene glycol evaporator is further connected with the fourth heat medium pipeline through a sixth heat medium pipeline, the second heat medium pipeline is connected with an inlet of the first circulating pump through a first circulating heat medium pipeline, the fourth heat medium pipeline is connected with an inlet of the second circulating pump through a second circulating heat medium pipeline, the first heat medium pipeline, the second heat medium outlet of the ethylene glycol evaporator is connected with a heat medium inlet of the second circulating, Be equipped with first governing valve and second governing valve on the third heat medium pipeline respectively, be equipped with first ooff valve and second ooff valve on second heat medium pipeline and the fourth heat medium pipeline respectively, be equipped with the third governing valve on the fifth heat medium pipeline, wherein, first governing valve is located between first circulating pump and the heat medium inlet header, the second governing valve is located between second circulating pump and the heat medium inlet header, first ooff valve is located between heat medium outlet header and first circulation heat medium pipe and the second heat medium pipe connection department, the second ooff valve is located between heat medium outlet header and second circulation heat medium pipe and the fourth heat medium pipe connection department.

Images