CN107965753A - One kind utilizes low-temperature industrial hot water production vapor device - Google Patents

Abstract

One kind utilizes low-temperature industrial hot water production vapor device, it is made of regulating valve A, regulating valve B, pressure reducing valve, regulating valve C, heat exchanger, heat pump assembly, centrifugal vapor compressor.Low-temperature industrial hot water from industrial enterprise is divided into two strands, after the decompression of the first stock-traders' know-how pressure reducing valve, into the shell-space of heat exchanger, produces low temperature and low pressure water vapor.Low temperature and low pressure water vapor lifts temperature by the condenser of heat pump assembly, then by centrifugal vapor compressor adherence pressure, becomes high temperature and high pressure steam, used for plant produced.Second stock-traders' know-how regulating valve enters heat exchanger, and by restraining hot water and low temperature and low pressure water vapor in heating heat exchanger shell-space, then heat release is discharged as normal-temperature water in the evaporator of heat pump assembly.The present invention provides one kind to utilize low-temperature industrial hot water production vapor device, is not only that the enterprise for having low-temperature industrial hot water provides production required water vapour, can also reduce thermal pollution caused by discharge hot water.

Description

A steam production device using low-temperature industrial hot water

technical field

The design of the invention belongs to the field of energy technology, and in particular relates to a device for producing water vapor by utilizing low-temperature industrial hot water.

Background technique

With the development of my country's economy, the consumption of energy, especially fossil energy, is increasing rapidly. The massive consumption of fossil energy has caused increasingly serious environmental problems such as air pollution and water pollution. Fully recycling low-grade energy can reduce the consumption of fossil energy, thereby achieving the purpose of environmental protection.

Many industries will produce low-grade hot water, such as petroleum and chemical production, which will produce low-grade hot water at 80-200°C. These hot water are not easy to use directly, and direct discharge will cause thermal pollution. At the same time, these enterprises need water vapor for production and life.

Contents of the invention

The object of the present invention is to provide a device for producing steam by using low-temperature industrial hot water.

A steam production device utilizing low-temperature industrial hot water includes:

Regulating valve A, regulating valve B, pressure reducing valve, regulating valve C, heat exchanger, heat pump device, centrifugal steam compressor;

The heat pump unit consists of a compressor, a condenser, a throttle valve and an evaporator.

The industrial hot water is divided into two streams after passing through the regulating valve A.

The first stream of industrial hot water passes through the regulating valve B and the pressure reducing valve in sequence, and then enters the shell space of the heat exchanger to generate low-temperature and low-pressure water vapor. The low-temperature and low-pressure steam passes through the condenser of the heat pump device to increase the temperature, and then the centrifugal steam compressor increases the pressure to become high-temperature and high-pressure steam.

The second stream enters the heat exchanger through the regulating valve C, heats the hot water and low-temperature and low-pressure steam in the shell space of the heat exchanger through the heat exchanger tube bundle, and then releases heat in the evaporator of the heat pump device to become water at 20-30°C discharge.

By controlling the opening of regulating valve A, regulating valve B and regulating valve C, the production of high-temperature and high-pressure steam is controlled and the ratio of the two streams is adjusted.

The invention can be widely used in petrochemical enterprises, and has positive effects on saving energy and reducing heat pollution.

Description of drawings

Below in conjunction with accompanying drawing, the present invention will be further described

Figure 1 is a schematic structural diagram of a steam production device using low-temperature industrial hot water

Explanation of symbols in the attached drawings: 1. Regulating valve A 2, regulating valve B 3, regulating valve C 4, low temperature heat exchanger 5, heat exchanger 6, centrifugal steam compressor 7, compressor 8, condenser 9, section Flow valve 10, evaporator

Detailed ways

The invention utilizes the energy of low-grade hot water at 80-200°C to propose a device for producing water vapor using low-temperature industrial hot water.

A water vapor production device utilizing low-temperature industrial hot water according to the present invention is composed of a regulating valve A, a regulating valve B, a pressure reducing valve, a regulating valve C, a heat exchanger, a heat pump device, and a centrifugal steam compressor.

The heat pump unit includes; compressor, condenser, throttle valve and evaporator.

The industrial hot water is divided into two streams after passing through the regulating valve A: the first stream becomes superheated steam after passing through the regulating valve B, the pressure reducing valve, the shell space of the heat exchanger, the condenser of the heat pump device, and the centrifugal steam compressor; the second stream Through the regulating valve C, heat exchanger tube bundle, and evaporator of the heat pump device, it becomes water at 20-30°C;

The following is an example of industrial hot water at 300kPa and 80°C:

The first stream of 300kPa, 80°C industrial hot water, after adjusting the flow rate through the regulating valve B, is enthalpy throttling in the pressure reducing valve to become 25kPa, 64.96°C wet steam, and then first absorbs heat in the heat exchanger shell space, and then It flows into the condenser of the heat pump to absorb heat to the state of superheated steam, and finally the superheated steam is sucked into the centrifugal steam compressor and compressed into high-temperature and high-pressure steam.

The second stream of 300kPa, 80°C industrial hot water passes through the regulating valve C to adjust the flow, and the flow rate is eight times that of the first industrial hot water. It releases heat to 70°C in the heat exchanger tube bundle, and then releases heat in the evaporator of the heat pump. Heat becomes 25°C water discharge.

In the heat exchanger, hot water is used to heat the wet steam.

The outlet of the heat exchanger in the first stream of industrial hot water is wet steam at 64.96°C, and the outlet of the heat exchanger in the second stream of industrial hot water is hot water at 70°C. The temperature difference between the pinch points in the heat exchanger is about 5°C.

The heat pump uses a water source heat pump to transfer the heat in the second industrial hot water to the steam generated by the second industrial hot water, making it into superheated steam.

The centrifugal steam compressor compresses the steam from the heat pump outlet in the second industrial hot water to 200kPa.

Claims (4)

1. A device for producing water vapor utilizing low temperature industrial hot water, characterized in that it comprises regulating valve A (1), regulating valve B (2), pressure reducing valve (3), regulating valve C (4), heat exchange device (5), heat pump device, centrifugal steam compressor (6); The heat pump device is composed of a compressor (7), a condenser (8), a throttle valve (9) and an evaporator (10). 2. A kind of steam production device utilizing low-temperature industrial hot water according to right 1, characterized in that the shell space of the heat exchanger (5) is negative pressure, and the pressure value is compressed by the pressure reducing valve (3) and centrifugal steam Machine (6) controls jointly. 3. A steam production device utilizing low temperature industrial hot water according to claim 1, characterized in that the amount of steam generated is controlled by the parameters of industrial hot water and the flow of industrial hot water passing through the regulating valve. 4. A device for producing water vapor utilizing low-temperature industrial hot water according to claim 1, characterized in that the centrifugal steam compressor (6) maintains the negative pressure of the heat exchanger (5) and heat pump condenser (8).