A waste heat gas heat recovery steam compression system

Abstract

This utility model discloses a waste heat gas heat recovery steam compression system, belonging to the field of heat energy recovery and steam compression utilization technology. It includes a steam heat exchanger, a vapor-liquid separation tower, and a steam compressor connected sequentially by pipelines. A return pipe is provided between the vapor-liquid separation tower and the steam heat exchanger, and a circulation pump is installed on the return pipe. This utility model first discharges production condensate into the vapor-liquid separation tower, and then uses the circulation pump to send the condensate to the vapor-water heat exchanger to convert the heat in the waste gas into the condensate. Steam is continuously generated through circulation between the heat exchanger and the vapor-liquid separation tower via the circulation pump. The steam compressor draws steam from the vapor-liquid separation tower and compresses it to meet the steam requirements for production. Simultaneously, industrial steam is introduced to the steam compressor inlet as compensation steam to mitigate the adverse effects of sudden shutdowns of production equipment. When the condensate level in the vapor-liquid separation tower exceeds the high level, the drain pump is started; when the level is low, it stops, draining the condensate to a temporary storage tank for later use.

Description

Technical Field

[0001] This utility model relates to the field of heat energy recovery and steam compression utilization technology, specifically to a waste heat gas heat recovery steam compression system. Background Technology

[0002] This industry heavily utilizes steam for dehydration and drying of materials, currently generating two types of waste heat: one part is condensed water from production steam that is cooled and then discharged; the other part is waste heat steam generated from production that is cooled by air cooling and then treated before being released into the atmosphere. This wastes energy and increases the cost of waste heat treatment.

[0003] To address the aforementioned problems, this invention provides a waste heat gas heat recovery steam compression system, which solves the issues of low recovery efficiency and high cost of previous waste heat gas heat recovery steam compression systems. Utility Model Content

[0004] To address the aforementioned problems, this invention provides a waste heat gas heat recovery steam compression system, which aims to improve recovery efficiency and reduce costs.

[0005] To achieve the above objectives, this utility model provides the following solution:

[0006] A waste heat gas heat recovery steam compression system includes a steam heat exchanger, a vapor-liquid separator, and a steam compressor connected in sequence by pipelines. A return pipeline is provided between the vapor-liquid separator and the steam heat exchanger, and a circulation pump is provided on the return pipeline.

[0007] Preferably, the steam heat exchanger is provided with a waste heat gas inlet and a waste heat gas outlet.

[0008] Preferably, the waste heat gas inlet and the waste heat gas outlet are used for outputting waste heat gas and introducing waste heat gas, respectively.

[0009] Preferably, the vapor-liquid separation tower is provided with a condensate inlet and a condensate outlet.

[0010] Preferably, the condensate outlet is connected to a condensate storage tank via a pipe.

[0011] Preferably, a drain pump is installed on the pipeline between the condensate outlet and the condensate storage tank.

[0012] Preferably, the steam compressor is a centrifugal steam compressor.

[0013] The present invention achieves the following technical advantages over the prior art:

[0014] This invention first discharges the production condensate into a vapor-liquid separator. A circulating pump then sends the condensate to a steam-water heat exchanger to convert the heat from the waste steam into the condensate. Steam is continuously generated between the heat exchanger and the vapor-liquid separator through a circulating pump. A steam compressor draws steam from the vapor-liquid separator and compresses it to meet the steam requirements for production. At the same time, industrial steam is introduced to the steam compressor inlet as compensation steam to mitigate the adverse effects of sudden shutdowns of production equipment. When the condensate level in the vapor-liquid separator exceeds the high level, a drain pump is started and stopped at the low level to discharge the condensate into a temporary storage tank for later use. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Appendix Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] The components include: 1. Steam heat exchanger; 2. Vapor-liquid separator; 3. Steam compressor; 4. Circulating pump; 5. Drain pump; and 6. Condensate storage tank. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] This invention provides a waste heat gas heat recovery steam compression system to improve recovery efficiency and reduce costs.

[0020] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] refer to Figure 1A waste heat gas heat recovery steam compression system includes a steam heat exchanger, a vapor-liquid separation tower, and a steam compressor connected in sequence by pipelines. A return pipe is provided between the vapor-liquid separation tower and the steam heat exchanger, and a circulation pump is installed on the return pipe. This invention first discharges production condensate into the vapor-liquid separation tower, and then uses the circulation pump to send the condensate to the steam-water heat exchanger to convert the heat in the waste gas into the condensate. Steam is continuously generated by the circulation pump between the heat exchanger and the vapor-liquid separation tower. The steam compressor draws steam from the vapor-liquid separation tower and compresses it to meet the steam requirements for production. Simultaneously, industrial steam is introduced to the steam compressor inlet as compensation steam to mitigate the adverse effects of sudden shutdowns of production equipment. When the condensate level in the vapor-liquid separation tower exceeds the high level, the drain pump is started; when the level is low, it stops, draining the condensate to a temporary storage tank for later use.

[0022] refer to Figure 1 The steam heat exchanger is equipped with a waste heat gas inlet and a waste heat gas outlet; the waste heat gas inlet and the waste heat gas outlet are used to output waste heat gas and to introduce waste heat gas, respectively.

[0023] refer to Figure 1 The vapor-liquid separator is equipped with a condensate inlet and a condensate outlet.

[0024] refer to Figure 1 The condensate outlet is connected to the condensate storage tank via a pipe.

[0025] refer to Figure 1 A drain pump is installed on the pipeline between the condensate outlet and the condensate storage tank.

[0026] Furthermore, the steam compressor is a centrifugal steam compressor.

[0027] It should be noted that, for those skilled in the art, it is obvious that this utility model is not limited to the details of the above exemplary embodiments, and that this utility model can be implemented in other specific forms without departing from the spirit or essential characteristics of this utility model. Therefore, the embodiments should be considered as exemplary and non-limiting in all respects, and the scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A waste heat gas heat recovery vapor compression system characterized by, It includes a steam heat exchanger, a vapor-liquid separator, and a steam compressor connected in sequence by pipelines. A return pipe is provided between the vapor-liquid separator and the steam heat exchanger, and a circulation pump is installed on the return pipe.

2. The waste-heat gas heat recovery vapor compression system of claim 1, wherein, The steam heat exchanger is equipped with a production waste heat gas inlet and a production waste heat gas outlet.

3. The waste-heat gas heat recovery vapor compression system of claim 2, wherein, The waste heat gas inlet and the waste heat gas outlet are used for outputting and introducing waste heat gas, respectively.

4. The waste-heat gas heat recovery vapor compression system of claim 1, wherein, The vapor-liquid separator is equipped with a condensate inlet and a condensate outlet.

5. The waste heat gas heat recovery steam compression system according to claim 4, characterized in that, The condensate outlet is connected to the condensate storage tank via a pipe.

6. The waste-heat gas heat recovery vapor compression system of claim 5, wherein, A drain pump is installed on the pipeline between the condensate outlet and the condensate storage tank.

7. The waste-heat gas heat recovery vapor compression system of claim 1, wherein, The steam compressor is a centrifugal steam compressor.

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