CN105953598B - Condensing water vapor heat-exchange system - Google Patents

Abstract

The invention belongs to the technical field of condensed water vaporization, and particularly relates to a condensed water vaporization heat exchange system, which is characterized in that it includes a reactor body, a vacuum pump, a low-temperature condensed water trap, and a pressure sensor. The upper side is provided with a vacuum pump interface connected to the interlayer. The vacuum pump interface is connected to the vacuum pump through a pipeline. The side of the reactor body is provided with a high-temperature condensate water inlet pipe. The water pipe and the low-temperature condensed water outlet pipe are all connected to the interlayer. A low-temperature condensed water trap is installed at the end of the low-temperature condensed water outlet pipe, and a pressure sensor is installed on the top of the reactor body and near the vacuum pump interface. The beneficial effect of the invention is that the condensed water can release heat rapidly, improve the production efficiency, and fully utilize the enthalpy value of the condensed water, greatly improving the utilization rate of the enthalpy value in the condensed water, and reducing the production cost of the factory.

Description

Condensate vaporization heat exchange system

technical field

The invention belongs to the technical field of condensed water vaporization, and in particular relates to a condensed water vaporization heat exchange system.

Background technique

Condensed water of various temperatures produced by steam exothermic phase change by steam equipment contains relatively high heat. In order to make full use of the heat, there are currently two methods adopted by the factory: one is to use a steam trap to drain the system and then flash out part of the low-pressure steam for recycling, and the other is drained with the condensed water, resulting in waste. The advantage of this method is that it does not It affects the heat exchange efficiency of the system. The disadvantage is that the recovery rate is low, up to 16%. The second is to use multi-stage, that is, use condensed water to heat the material, so that the condensed water continues to release heat and cool down. The advantage of this method is the heat utilization rate in condensed water The disadvantage is that the heat exchange efficiency is low, and the heat exchange area needs to be increased to make up for it, and more is at the expense of the heat exchange efficiency, which greatly prolongs the production time.

Contents of the invention

In order to overcome the deficiencies of the prior art above, the present invention provides a condensed water vaporization heat exchange system, which can make the condensed water release heat quickly, improve production efficiency, and make full use of the enthalpy value, greatly increasing the heat transfer rate of the condensed water. The utilization rate of enthalpy reduces the production cost of the factory.

A condensed water vaporization heat exchange system, characterized in that it includes a reactor body, a vacuum pump, a low-temperature condensed water trap, and a pressure sensor. The vacuum pump interface connected to the interlayer, the vacuum pump interface is connected to the vacuum pump through a pipeline, the side of the reactor body is provided with a high-temperature condensed water inlet pipe, and the bottom of the reactor body is provided with a low-temperature condensed water outlet pipe, so The high-temperature condensed water inlet pipe and the low-temperature condensed water outlet pipe are all in communication with the interlayer, the end of the low-temperature condensed water outlet pipe is provided with the low-temperature condensed water trap, the top of the reactor body, the vacuum pump The pressure sensor is arranged near the interface.

The high-temperature condensed water inlet pipe is provided with a high-temperature condensed water inlet valve.

The low-temperature condensed water outlet pipe is provided with a low-temperature condensed water outlet valve.

The beneficial effects of the present invention are: according to the heating temperature required by the process, usually below 100°C, the condensed water system is kept in a corresponding negative pressure state, and the condensed water can be vaporized when it enters the system of the present invention, and then quickly fills the space to realize heat exchange. The liquid water that condenses again after releasing the heat is discharged from the system with a steam trap. The temperature of the condensed water discharged from the steam trap is generally between 70-95 ° C. At this time, it is discharged again, and the enthalpy value is very low, which greatly saves heat and water resources, and meets the requirements of green production, energy conservation and environmental protection in my country's chemical industry. The invention increases the heat exchange area, improves the heat exchange efficiency, makes full use of the enthalpy value in the condensed water, and has a very simple structure, easy processing and production, and low cost, which solves the problem of the low utilization rate of steam heat in the current chemical production field. It is a high problem and a major breakthrough in energy reuse.

Description of drawings

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

In the figure, 1. Vacuum pump, 2. Low temperature condensate outlet valve, 3. Low temperature condensate trap, 4. High temperature condensate inlet valve, 5. Pressure sensor, 6. Vacuum pump interface, 7. High temperature condensate inlet pipe, 8 . Low temperature condensed water outlet pipe, 9. Reactor body, 10. Materials to be heated, 11. Low temperature condensed water, 12. Interlayer.

Detailed ways

A specific embodiment of the invention will be described below in conjunction with the accompanying drawings.

As shown in Figure 1, the present invention provides a condensed water vaporization heat exchange system, which is characterized in that it includes a reactor body 9, a vacuum pump 1, a low-temperature condensed water trap 3, and a pressure sensor 5. The inner wall of the reactor body 9 is provided with Interlayer 12, the side of the upper end of the reaction kettle body 9 is provided with a vacuum pump interface 6 communicating with the interlayer 12, the vacuum pump interface 6 is connected to the vacuum pump 1 through a pipeline, and the side of the reaction kettle body 9 is provided with A high-temperature condensed water inlet pipe 7, a low-temperature condensed water outlet pipe 8 is provided at the bottom of the reaction kettle body 9, and the high-temperature condensed water inlet pipe 7 and the low-temperature condensed water outlet pipe 8 are all connected to the interlayer 12. The low-temperature condensed water outlet pipe 8 is provided with the low-temperature condensed water steam trap 3 , and the pressure sensor 5 is provided at the top of the reactor body 9 and near the vacuum pump interface 6 .

The high-temperature condensed water inlet pipe 7 is provided with a high-temperature condensed water inlet valve 4 .

The low-temperature condensed water outlet pipe 8 is provided with a low-temperature condensed water outlet valve 2 .

Working principle: The material 10 to be heated is placed in the reactor body 9, and the high-temperature condensed water to be used is entered into the interlayer 12 of the reactor body 9 from the high-temperature condensed water inlet pipe 7, and the corresponding negative pressure value is designed according to the temperature required by the process. The vacuum pump 1 draws a vacuum from the vacuum pump interface 6, and the high-temperature condensed water immediately completes the phase change into low-pressure steam, which fills the entire space of the interlayer 12, and performs heat exchange with the materials in the reactor body 9 to change into a low-temperature condensed water 11, which is condensed by low temperature The water outlet valve 2 is discharged from the system through the steam trap. The pressure sensor 5 and the vacuum pump 1 are devices to ensure the negative pressure value of the system, and their working principles will not be repeated here.

The heat exchange system of the present invention has been tested in Tianjin Dagu Chemical Plant, Tianjin Changlu Haijing and other manufacturers, and the temperature of the low-temperature condensed water 11 through the heat exchange system is reduced to 70-95°C, no longer in the form of steam, and condensed The outlet of the water has changed from the original vibration of the outlet pipe caused by the excessive steam volume to the current form of small water flow, the outlet temperature of the condensed water is lowered, the heat utilization rate is greatly improved, and repeated heating is not required, which greatly reduces the production cost of the enterprise and saves water resources.

In addition, this system is still being tested in some other factories, and the water consumption per hour is detected by flowmeter, which is reduced from 1000 tons of water to 250-500 tons, and the steam utilization rate is increased by 50%-75%, which reduces the production capacity of the enterprise. cost.

The examples of the present invention have been described in detail above, but the content described is only a preferred embodiment of the present invention, and cannot be considered as limiting the implementation scope of the present invention. All equivalent changes and improvements made according to the application scope of the present invention shall still belong to the scope covered by the patent of the present invention.

Claims (3)

1. A kind of 1. condensing water vapor heat-exchange system, it is characterised in that including reaction kettle body, vavuum pump, low temperature cold condensate steam trap, Pressure sensor, the reaction kettle body inwall are provided with interlayer, and reaction kettle body upper end sidepiece is provided with what is communicated with the interlayer Vacuum pump interface, the vacuum pump interface are connected by pipeline with the vavuum pump, and it is cold that the reaction kettle body sidepiece is provided with high temperature Condensate water inlet pipe, the reaction kettle body bottom are provided with low temperature cold condensate outlet pipe, the high-temperature condensation water water inlet pipe, the low temperature Condensed water outlet pipe connects with the interlayer, and it is hydrophobic that the low temperature cold condensate outlet pipe end is provided with the low temperature cold condensate Device, the reaction kettle body top, the vacuum pump interface are nearby provided with the pressure sensor.
2. 2. condensing water vapor heat-exchange system according to claim 1, it is characterised in that on the high-temperature condensation water water inlet pipe Provided with high-temperature condensation water imported valve.
3. 3. condensing water vapor heat-exchange system according to claim 1 or 2, it is characterised in that the low temperature cold condensate outlet pipe It is provided with cryogenic condensation water out valve.