CN218033091U - Steam energy-saving supply system for setting machine of printing and dyeing mill - Google Patents

Abstract

The utility model discloses an energy-conserving supply system of setting machine steam of dyeing and printing mill, including heat source unit, ejector, forming machine and flash tank, the steam outlet of heat source unit passes through the pipeline and is connected with the jet of ejector, the export of ejector passes through the steam input port connection of pipeline with the forming machine, the exhaust steam discharge port of forming machine pass through the pipeline with the input port connection of flash tank, the flash tank be equipped with a delivery outlet pass through the pipeline with the ejector's jet mouth is connected. The utility model has the advantages that: (1) The ejector replaces the existing cooling and pressure reducing device, and the condensed water with residual temperature is recycled to adjust high-temperature and high-pressure steam, so that energy can be effectively saved and the production cost can be reduced; (2) The device can be improved on the basis of the existing equipment, the main structure of the existing equipment does not need to be changed, and the realization is very easy; (3) Energy can be saved to a great extent, and the heat loss and the environmental pollution are reduced.

Description

A steam energy-saving supply system for setting machine in printing and dyeing factory

technical field

The utility model relates to the technical field of heat supply for setting machines in printing and dyeing factories, in particular to an energy-saving steam supply system for setting machines in printing and dyeing factories that saves energy and reduces production costs.

Background technique

As shown in Figure 1, in the heating system of the existing printing and dyeing factory, the discharge water generated after the setting machine works is discharged into the flash tank, and the steam with a pressure of 0.8MPa and a temperature of about 170°C is generated in the flash tank. In order to recycle waste heat from the setting machine, the steam generated in the flash tank is deoxidized by the deaerator, and then input into the heating device to further heat water to form high-temperature and high-pressure steam with a temperature of 405°C and a pressure of 4.2MPa. The high-temperature and high-pressure steam needs to be lowered in temperature and pressure before it can be used in the setting machine. Therefore, the high-temperature and high-pressure steam forms working steam with a temperature of 300°C and a pressure of 2.5 MPa after passing through the cooling and decompression device, and then enters the setting machine to heat and perform work. After working in the setting machine, the low-temperature condensed water with a temperature of 170°C and a pressure of 2.0 MPa is discharged into the flash tank for storage, and the flash tank not only directly enters the deaerator for recycling, but also produces Condensed water with high temperature is directly discharged and cannot be used efficiently. Among them, in the cooling and decompression device, in order to reduce the high-temperature and high-pressure steam to suitable working steam, cold water is used for forced temperature reduction and decompression. A large number of heat sources are wasted and environmental pollution will be caused.

Utility model content

The purpose of this utility model is to provide an energy-saving and environment-friendly steam energy-saving supply system for setting machines in printing and dyeing factories, which is modified on the basis of the existing structure.

In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model for solving the above-mentioned technical problems is: an energy-saving supply system for the steam of the setting machine in a printing and dyeing factory, including a heat source unit, an ejector, a setting machine and a flash tank, and the steam of the heat source unit The outlet is connected with the injection port of the ejector through a pipeline, the outlet of the ejector is connected with the steam input port of the sizing machine through a pipeline, and the waste steam discharge port of the sizing machine is connected with the input port of the flash tank through a pipeline, An output port of the flash tank is connected with the ejector port of the ejector through a pipeline.

Preferably, the heat source unit is a waste heat boiler.

Preferably, the heat source unit is a waste incineration boiler.

Preferably, a first control valve is provided between the heat source unit and the injection port of the ejector, and a second control valve is provided between the flash tank and the ejector port, through the first control valve and /or the adjustment of the second control valve can turn the high-temperature and high-pressure steam into working steam.

A first heat exchanger is arranged on the gas discharge port of the sizing machine, and the cold air is connected to the air inlet of the first heat exchanger through a fan, and the air outlet of the first heat exchanger is connected to the inner chamber of the sizing machine.

Compared with the prior art, the utility model has the following beneficial effects: (1) The ejector is used to replace the existing cooling and pressure reducing device, and the condensed water with high temperature is reused to adjust the high temperature and high pressure steam, which can effectively save (2) It can be improved on the basis of existing equipment without changing the main structure of the existing equipment, and it is very easy to realize; (3) It can save energy to a large extent, reduce heat loss and environmental pollution.

Description of drawings

Fig. 1 is a schematic diagram of the structure of the heating system of the printing and dyeing factory in the prior art of the utility model;

Fig. 2 is a schematic diagram of the system structure of the steam energy-saving supply system for the setting machine of the printing and dyeing factory of the utility model.

detailed description

The utility model is described in detail below in conjunction with the accompanying drawings and specific embodiments. Accompanying drawing has shown the specific structure of the preferred embodiment of the utility model. Wherein the structural characteristics of each element, if there is a description to the direction (up, down, left, right, front and back), it is described with reference to the structure shown in the figure, but the actual use direction of the present utility model is not limited to this.

A kind of steam energy-saving supply system for setting machine in printing and dyeing factory, as shown in Figure 2, includes a heat source unit, an ejector, a setting machine and a flash tank, the steam outlet of the heat source unit is connected with the injection port of the ejector through a pipeline, and the The outlet of the ejector is connected with the steam input port of the sizing machine through a pipeline, and the waste steam discharge port of the sizing machine is connected with the input port of the flash tank through a pipeline, and the flash tank is provided with an output port connected with the steam tank through a pipeline. The ejector port of the ejector is connected. The heat source unit produces high-temperature and high-pressure steam with a temperature of 405° C. and a pressure of 4.2 MPa. The high-speed, high-energy flow formed by the high-temperature and high-pressure steam passing through the injection port of the ejector will mix the hot water injection flow in the flash tank with a temperature of 170°C and a pressure of 0.8 MPa into the mixing chamber of the ejector, and by controlling the amount of injection Or the amount of injection, adjust the high-temperature and high-pressure steam with hot water to the working steam with a temperature of 300 ° C and a pressure of 2.5 MPa suitable for the setting machine. Use the ejector to replace the cooling device and peripheral cold source medium in the original technical scheme with the waste steam with high temperature waste heat from the setting machine, which can avoid heat loss, reduce energy consumption and discharge, effectively save energy, and do not need to modify the existing production The big change of the system is extremely easy to implement. Preferably, the heat source unit is a waste heat boiler. A first control valve is set between the waste heat boiler and the injection port of the ejector, and a second control valve is set between the flash tank and the injection port of the ejector, through the first control valve and/or the second The two control valves can be adjusted to form high-temperature and high-pressure steam into working steam.

In addition, a first heat exchanger is arranged on the gas discharge port of the sizing machine, and the cold air is connected to the air inlet of the first heat exchanger through a fan, and the air outlet of the first heat exchanger is connected to the inner cavity of the sizing machine, and the gas is discharged by the sizing machine. The exhaust gas up to 180°C passes through the first heat exchanger to heat the cold air and then enters the inner cavity of the setting machine, which can reduce the heat loss in the inner cavity of the setting machine and reduce energy loss, which is beneficial to maintaining the temperature inside the setting machine. Production quality.

The above is only a preferred embodiment of the utility model, and the scope of the utility model can not be limited with this, that is, all simple equivalent changes made according to the scope of the utility model patent application and the utility model description content are the same as Modifications still belong to the scope covered by the utility model patent.

Claims (5)

1. The steam energy-saving supply system of the setting machine of the printing and dyeing mill comprises a heat source unit, an ejector, a setting machine and a flash tank, wherein a steam outlet of the heat source unit is connected with a jet orifice of the ejector through a pipeline, an outlet of the ejector is connected with a steam input port of the setting machine through a pipeline, a waste steam discharge port of the setting machine is connected with an input port of the flash tank through a pipeline, and an output port of the flash tank is connected with the ejector through a pipeline.

2. The steam energy-saving supply system of the setting machine of the printing and dyeing mill as claimed in claim 1, characterized in that: the heat source unit is a waste heat boiler.

3. The steam energy-saving supply system of the setting machine of the printing and dyeing mill as claimed in claim 1, characterized in that: the heat source unit is a waste incineration boiler.

4. The steam energy-saving supply system of the setting machine of the printing and dyeing mill as set forth in claim 1, characterized in that: a first control valve is arranged between the heat source unit and the jet orifice of the ejector, and a second control valve is arranged between the flash tank and the jet orifice of the ejector.

5. The steam energy-saving supply system of the setting machine of the printing and dyeing mill as set forth in claim 1, characterized in that: the air outlet of the setting machine is provided with a first heat exchanger, cold air is connected with an air inlet of the first heat exchanger through a fan, and an air outlet of the first heat exchanger is connected with an inner cavity of the setting machine.

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