Dust-containing high-temperature steam waste heat utilization system

Abstract

The utility model belongs to the technical field of white spirit bran steaming, and particularly relates to a dust-containing high-temperature steam waste heat utilization system which comprises a steam using unit, a waste heat utilization unit and a waste heat utilization unit. The dust removal unit is used for receiving the dust-containing high-temperature waste steam discharged by the steam utilization unit and carrying out dust removal treatment; the second-class heat pump unit is used for receiving the high-temperature waste steam subjected to dust removal treatment by the dust removal unit and condensing the high-temperature waste steam into high-temperature waste liquid and non-condensable gas; the heat exchanger receives the high-temperature waste liquid and the normal-temperature demineralized water, 45 DEG C waste liquid and high-temperature demineralized water are formed after heat exchange, the heat exchanger discharges the 45 DEG C waste liquid, and the high-temperature demineralized water is conveyed to the second-class heat pump unit; sublimating the high-temperature demineralized water into steam and then conveying the steam to a steam using unit; the cooling unit is used for cooling a medium of the second-class heat pump condenser; and the cleaning unit is used for cleaning deposited scales in the second-class heat pump heat exchange tube. According to the utility model, the problem of heat waste caused by direct emission of dust-containing high-temperature waste steam can be solved, and the dust-containing high-temperature waste steam boiler has a better market application prospect.

Description

Technical Field

[0001] The utility model belongs to the technical field of white wine bran steaming, and in particular relates to a dust-containing high-temperature steam waste heat utilization system. Background Art

[0002] At present, in liquor factories, continuous bran steamers have gradually replaced scattered wine steaming operations. The waste high-temperature steam from bran steaming is discharged in an organized manner, but the waste steam is not treated. Direct discharge will form white mist, affecting the appearance of the factory area. This part of the waste steam contains a large amount of particulate matter such as bran husks, dust, and volatile organic substances such as phenolic aldehydes. Direct discharge will have an impact on the environment. At the same time, the waste steam contains a large amount of heat, and direct discharge will cause heat waste.

[0003] In order to process this part of dust-containing high-temperature waste steam and utilize its heat, the prepared steam is returned to the steam utilization unit, and the present application provides a dust-containing high-temperature steam waste heat utilization system.

[0004] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to a person skilled in the art. Utility Model Content

[0005] The utility model aims to provide a dust-containing high-temperature steam waste heat utilization system to solve the problem that direct discharge of dust-containing high-temperature waste steam will cause heat waste.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A dust-containing high-temperature steam waste heat utilization system, comprising:

[0008] The steam unit discharges dusty and high-temperature waste steam;

[0009] The dust removal unit receives the dust-containing high-temperature waste steam discharged from the steam unit, performs dust removal treatment, and then discharges the solid dust through the gas pipeline;

[0010] The second type heat pump unit receives the high temperature waste steam after the dust removal unit dust removal treatment, and absorbs the heat of the high temperature waste steam to condense the high temperature waste steam into high temperature waste liquid and non-condensable gas;

[0011] The heat exchanger receives high-temperature waste liquid and normal-temperature desalted water. After heat exchange in the heat exchanger, the high-temperature waste liquid and normal-temperature desalted water form 45°C waste liquid and high-temperature desalted water. The heat exchanger discharges the 45°C waste liquid and transports the high-temperature desalted water to the second-class heat pump unit. The high-temperature desalted water is sublimated into steam under the action of vacuum and heat medium and then transported to the steam-using unit.

[0012] A cooling unit for cooling the medium of the second type heat pump condenser;

[0013] Cleaning unit, used to clean the scale inside the heat exchange tube of the second type heat pump;

[0014] As a preferred option, the solid dust enters the subsequent environmental protection treatment system;

[0015] Preferably, the non-condensable gas is discharged through a gas pipeline and enters a subsequent environmental protection system for treatment.

[0016] Preferably, the 45°C waste liquid formed after heat exchange between the high-temperature waste liquid and the normal-temperature desalted water in the heat exchanger enters the subsequent environmental protection treatment system.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] (1) The dust-containing high-temperature steam waste heat utilization system of the utility model utilizes waste heat to absorb the phase change heat and high-temperature heat of the dust-containing waste high-temperature steam to prepare steam and return it to the steam-using unit, effectively solving the heat waste after the organized discharge of the dust-containing waste high-temperature steam from steamed bran. At the same time, the dust-containing high-temperature waste steam is treated by the system and the terminal temperature is no higher than 45°C, solving the problem of white mist formation.

[0019] (2) The dust-containing high-temperature steam waste heat utilization system of the utility model does not require the participation of external thermal energy. It only consumes electricity for the system pump group, cooling tower and cleaning device. The comprehensive energy saving of the system reaches more than 40%. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a flow chart of waste heat utilization of dust-containing high-temperature steam of the utility model;

[0021] Description of main reference numerals:

[0022] A1-A5, gas pipeline;

[0023] B. Dust removal unit;

[0024] C. Type II heat pump unit;

[0025] D. Cooling unit;

[0026] E. Cleaning unit;

[0027] F. Heat exchange unit;

[0028] G1-G8, liquid pipeline. DETAILED DESCRIPTION

[0029] The following is a clear and complete description of the technical solution of the utility model patent. Obviously, the described embodiments are part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by technicians in this field without creative work are within the scope of protection of the utility model.

[0030] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inside" and "outside" are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be a connection between two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] Example 1

[0033] A dust-containing high-temperature steam waste heat utilization system, comprising:

[0034] The high-temperature waste steam with dust discharged from the steam unit is first connected to the dust removal unit B through the gas pipeline A1 for dust removal treatment. The high-temperature waste steam after dust removal is sent to the second-class heat pump unit C through the gas pipeline A3; the solid dust is discharged through the gas pipeline A2 and enters the subsequent environmental protection system for treatment;

[0035] The second-class heat pump unit C absorbs the heat of high-temperature waste steam, and then sublimes the high-temperature desalted water after heat exchange with high-temperature waste liquid through heat exchanger F into steam under the action of vacuum and heat medium. This part of regenerated steam is transported to the steam-using unit through gas pipeline A4; the high-temperature waste steam is condensed into high-temperature waste liquid and non-condensable gas after heat release, among which the high-temperature waste liquid is exchanged with normal-temperature desalted water through liquid pipeline G5 to form 45°C waste liquid after heat exchange with heat exchanger F, and the 45°C waste liquid is discharged through liquid pipeline G6 and enters the subsequent environmental protection system for treatment; the non-condensable gas is discharged through gas pipeline A5 and enters the subsequent environmental protection system for treatment;

[0036] Cooling unit D, whose main function is to cool the medium of the second type heat pump condenser;

[0037] The cleaning unit E is mainly used to clean the scale inside the heat exchange tube of the second type heat pump.

[0038] See attached Figure 1 In the process flow diagram of the dust-containing high-temperature steam waste heat utilization system of the utility model,

[0039] The dust-containing high-temperature waste steam is transported to the dust removal unit B through the gas pipeline A1;

[0040] The dust removal unit B transports solid dust through the gas pipeline A2 and is connected to the second type heat pump unit C through the gas pipeline A3;

[0041] The second type heat pump unit C is connected to the cooling unit D through liquid pipelines G1 and G2, connected to the heat exchanger F through liquid pipeline G5, connected to the cleaning unit E through liquid pipelines G3 and G4, and transports regeneration steam through gas pipeline A4 and transports non-condensable gas through gas pipeline A5;

[0042] The desalted water is connected to the heat exchanger F through the liquid pipeline G7, and then connected to the second type heat pump unit C through the liquid pipeline G8;

[0043] The heat exchanger F is connected to the liquid pipeline G6 to transport the 45°C waste liquid.

[0044] The utility model discloses a waste heat utilization system for dust-containing high-temperature steam, which utilizes waste heat to absorb phase change heat and high-temperature heat of the dust-containing waste high-temperature steam to prepare steam and return it to the steam-using unit, thereby effectively solving the heat waste after the organized discharge of the dust-containing waste high-temperature steam from steamed bran. At the same time, the dust-containing high-temperature waste steam becomes a waste liquid with a temperature not higher than 45°C after being processed by the system, thus solving the problem of white mist formation.

[0045] It should be noted that the unusable heat of the system is the 45°C waste liquid after heat exchange by the heat exchanger, the small amount of heat loss of intermediate dust and non-condensable gas, the heat dissipation of system insulation and the heat loss of the second type heat pump. The solid dust, non-condensable gas and waste liquid generated by the system can be connected to the existing environmental protection treatment system in the factory for treatment.

[0046] On the other hand, the dust-containing high-temperature steam waste heat utilization system of the utility model does not require the participation of external thermal energy, and only consumes electricity for the system pump group, cooling tower and cleaning device, and the system comprehensive energy saving reaches more than 40%.

[0047] The foregoing description of specific exemplary embodiments of the utility model is for the purpose of illustration and illustration. These descriptions are not intended to limit the utility model to the precise form disclosed, and it is clear that many changes and variations can be made based on the above teachings. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the utility model and its practical application, so that those skilled in the art can realize and utilize various different exemplary embodiments of the utility model and various different options and changes. The scope of the utility model is intended to be defined by the claims and their equivalents.

Claims

1. A dust-containing high-temperature steam waste heat utilization system, characterized in that: include: The steam unit discharges dusty and high-temperature waste steam; The dust removal unit receives the dust-containing high-temperature waste steam discharged from the steam unit, performs dust removal treatment, and then discharges the solid dust through the gas pipeline; The second type heat pump unit receives the high temperature waste steam after the dust removal unit dust removal treatment, and absorbs the heat of the high temperature waste steam to condense the high temperature waste steam into high temperature waste liquid and non-condensable gas; The heat exchanger receives high-temperature waste liquid and normal-temperature desalted water. After heat exchange in the heat exchanger, the high-temperature waste liquid and normal-temperature desalted water form 45°C waste liquid and high-temperature desalted water. The heat exchanger discharges the 45°C waste liquid and transports the high-temperature desalted water to the second-class heat pump unit. The high-temperature desalted water is sublimated into steam under the action of vacuum and heat medium and then transported to the steam-using unit. A cooling unit for cooling the medium of the second type heat pump condenser; The cleaning unit is used to clean the scale inside the heat exchange tubes of the second type heat pump.

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