Tianlong Liquor Industry Expansion Container Waste Heat Recovery Renovation Plan
2025-06-30 17:23:19
1、 Overview
The exhaust of equipment such as deaerators, expansion tanks, and drain tanks inevitably carries a certain amount of water vapor, especially the exhaust of old-fashioned deaerators, which is particularly serious and leads to a large amount of steam leakage. This not only wastes a large amount of high-quality water sources that have been treated multiple times and a large amount of heat energy contained in the steam, but also causes a large amount of steam leakage, affecting the creation of leak free factories. Especially in the cold winter, steam condenses into water and falls on roofs and floors, further forming ice. The ice layer continues to thicken, which will seriously endanger the safety production of power plants. We suggest that your company install exhaust heat recovery devices on the deaerator and drain expansion vessel equipment.
The main purpose of this product is to collect the heat energy from the high-temperature residual steam discharged from equipment such as deaerator and expansion vessel, and to heat the cooling water, so that the residual heat from the exhaust can be fully utilized. It is a new energy-saving equipment with significant energy-saving benefits and can also reduce environmental noise.
2、 Structure and Working Principle
The product structure mainly consists of the following aspects: tower body, cooling baffle, steam water distribution plate, regular packing layer, cooling water inlet, outlet, etc. Cooling water enters the tower through the inlet and is heated by the steam entering the tower during the process of falling through the spray device and regular packing layer. Finally, it flows into the drainage tank through the outlet and is recycled. If the inlet pressure of the equipment is high, a rotary film waste heat recovery device can also be selected.
Introduce the exhaust (steam) from the deaerator or or other equipment into the residual steam recovery tank through the steam inlet, and mix it with the supplementary water or condensed water introduced from the inlet for mass transfer. Under the action of the internal mass transfer medium, the water and steam are fully in contact. The "inlet" absorbs the water vapor contained in the "inlet" and discharges it into the drain tank from the bottom outlet of the tank. Non condensable gas is discharged into the atmosphere through the top vent of the tank.
In order to ensure sufficient contact between steam and water, the inlet water is sprayed downwards through a spray device, which can evenly distribute the inlet water on the cross-section of the tank and make it semi atomized, greatly enhancing the absorption of water vapor by the inlet water. In addition, the stainless steel regular packing inside the tank is non deformable and non corrosive, and can be used for a long time without maintenance or replacement. Installing a demister in front of the exhaust port on the top of the tank can reduce the final steam content of the exhaust.
Due to the high oxygen content in the exhaust steam of the deaerator, in order to prevent it from being excessively dissolved into the make-up water again, it is necessary to reasonably control the ratio of steam and water entering the residual steam recovery tank, so as to maintain a suitable pressure and temperature inside the tank at all times to facilitate the discharge of oxygen.
3、 Model parameters: SQ-10 processing water capacity 10T/H exhaust steam waste heat recovery device
4、 Technical Renovation Explanation
This system can recover the exhaust steam of a single device, as well as simultaneously recover the exhaust steam of multiple deaerators and other devices. However, in order to ensure the recovery effect, the exhaust steam entering the same system should have similar exhaust pressure. Based on the actual situation of your company, we suggest that you install one exhaust heat recovery device, model SQ-15, on three 75T/H deaerators; Two 35T/H deaerators and two 25T/H deaerators, a total of four deaerators are equipped with one exhaust heat recovery device, model SQ-10; Install one exhaust heat recovery device, model SQ-5, on one 0.75m3 drainage expansion vessel; Install one exhaust waste heat recovery device, model SQ-5, on one 0.8m3 hydrophobic expansion vessel.
5、 Economic benefits
1) Economic Benefit Analysis of Installing Exhaust Waste Heat Recovery Devices on Three CY-75T/H Deaerators:
The known parameters of the deaerator are: working temperature: 104 ℃, working pressure: 0.02 MPa, rated output: 75T/H, quantity: 3 units
The inlet temperature of this waste heat recovery device is 104 ℃, the pressure is 0.02MPa, and the inlet steam volume is approximately (rated operating value of the deaerator):
0.375 T/H×3=1.125 T/H，
...... (Contact Huaneng for 0518-82239585)
Calculated based on 7200 hours of annual operation of the residual steam recovery device, standard coal can be saved in one year:
120×7200=864T
Coal saving amount equivalent to RMB 864 × 320=276000
2) Economic Benefit Analysis of Installing Exhaust Waste Heat Recovery Devices on 2 CY-35T/H Deaerators and 2 CY-35T/H Deaerators:
The known parameters of the deaerator are: working temperature: 104 ℃, working pressure: 0.02 MPa, rated output: 35T/H, quantity: 2 units; Working temperature: 104 ℃, working pressure: 0.02 MPa, rated output: 25T/H, quantity: 2 units
The inlet temperature of this waste heat recovery device is 104 ℃, the pressure is 0.02MPa, and the inlet steam volume is approximately (rated operating value of the deaerator):
0.175T/H×2+0.125T/H×2=0.6 T/H
...... (Contact Huaneng for 0518-82239585)
64×7200=460T
The coal saving amount is equivalent to RMB 460 × 320=147000
3) Economic Benefit Analysis of Installing Exhaust Waste Heat Recovery Device on One 0.75m3 Drainage Expansion Vessel:
The known parameters of the hydrophobic expansion vessel are: working temperature: 127 ℃, working pressure: 0.2 MPa, exhaust steam rate: 200kg/h;
The inlet temperature of this waste heat recovery device is 127 ℃, the pressure is 0.2MPa, and the inlet steam flow rate is 200kg/h;
From this, it can be concluded that due to its constant pressure process, the heat released by the hydrophobic expansion vessel per hour is
Q=MH=200 × 2715.92=543 × 103 kilojoules
H -- Enthalpy value of saturated steam at 127 ℃
This enthalpy value can be found from the table of water and steam properties
...... (Contact Huaneng for 0518-82239585)
The inlet water volume of this residual steam recovery device is 1.75T/H, and it is recommended to use model SQ-5.
Burning 1 kilogram of standard coal can generate 5000-6000 kcal, or 20950-25140 kilojoules of heat. Increasing the temperature of 1.75T water by 74 ℃ can save standard coal:
543×103÷25140=21kg
Calculated based on 7200 hours of annual operation of the residual steam recovery device, standard coal can be saved in one year:
21×7200=151T
The coal saving amount is equivalent to RMB 151 × 320=48000
4) Economic Benefit Analysis of Installing Exhaust Waste Heat Recovery Device on One 0.8m3 Drainage Expansion Vessel:
The known parameters of the hydrophobic expansion vessel are: working temperature: 127 ℃, working pressure: 0.2 MPa, exhaust steam volume: 300kg/h;
The inlet temperature of this waste heat recovery device is 127 ℃, the pressure is 0.2MPa, and the inlet steam flow rate is 300kg/h;
From this, it can be concluded that due to its constant pressure process, the heat released by the hydrophobic expansion vessel per hour is
...... (Contact Huaneng for 0518-82239585)
Calculated based on 7200 hours of annual operation of the residual steam recovery device, standard coal can be saved in one year:
32×7200=230T
Coal saving amount equivalent to RMB 230 × 320=73000 yuan
The exhaust of equipment such as deaerators, expansion tanks, and drain tanks inevitably carries a certain amount of water vapor, especially the exhaust of old-fashioned deaerators, which is particularly serious and leads to a large amount of steam leakage. This not only wastes a large amount of high-quality water sources that have been treated multiple times and a large amount of heat energy contained in the steam, but also causes a large amount of steam leakage, affecting the creation of leak free factories. Especially in the cold winter, steam condenses into water and falls on roofs and floors, further forming ice. The ice layer continues to thicken, which will seriously endanger the safety production of power plants. We suggest that your company install exhaust heat recovery devices on the deaerator and drain expansion vessel equipment.
The main purpose of this product is to collect the heat energy from the high-temperature residual steam discharged from equipment such as deaerator and expansion vessel, and to heat the cooling water, so that the residual heat from the exhaust can be fully utilized. It is a new energy-saving equipment with significant energy-saving benefits and can also reduce environmental noise.
2、 Structure and Working Principle
The product structure mainly consists of the following aspects: tower body, cooling baffle, steam water distribution plate, regular packing layer, cooling water inlet, outlet, etc. Cooling water enters the tower through the inlet and is heated by the steam entering the tower during the process of falling through the spray device and regular packing layer. Finally, it flows into the drainage tank through the outlet and is recycled. If the inlet pressure of the equipment is high, a rotary film waste heat recovery device can also be selected.
Introduce the exhaust (steam) from the deaerator or or other equipment into the residual steam recovery tank through the steam inlet, and mix it with the supplementary water or condensed water introduced from the inlet for mass transfer. Under the action of the internal mass transfer medium, the water and steam are fully in contact. The "inlet" absorbs the water vapor contained in the "inlet" and discharges it into the drain tank from the bottom outlet of the tank. Non condensable gas is discharged into the atmosphere through the top vent of the tank.
In order to ensure sufficient contact between steam and water, the inlet water is sprayed downwards through a spray device, which can evenly distribute the inlet water on the cross-section of the tank and make it semi atomized, greatly enhancing the absorption of water vapor by the inlet water. In addition, the stainless steel regular packing inside the tank is non deformable and non corrosive, and can be used for a long time without maintenance or replacement. Installing a demister in front of the exhaust port on the top of the tank can reduce the final steam content of the exhaust.
Due to the high oxygen content in the exhaust steam of the deaerator, in order to prevent it from being excessively dissolved into the make-up water again, it is necessary to reasonably control the ratio of steam and water entering the residual steam recovery tank, so as to maintain a suitable pressure and temperature inside the tank at all times to facilitate the discharge of oxygen.
3、 Model parameters: SQ-10 processing water capacity 10T/H exhaust steam waste heat recovery device
4、 Technical Renovation Explanation
This system can recover the exhaust steam of a single device, as well as simultaneously recover the exhaust steam of multiple deaerators and other devices. However, in order to ensure the recovery effect, the exhaust steam entering the same system should have similar exhaust pressure. Based on the actual situation of your company, we suggest that you install one exhaust heat recovery device, model SQ-15, on three 75T/H deaerators; Two 35T/H deaerators and two 25T/H deaerators, a total of four deaerators are equipped with one exhaust heat recovery device, model SQ-10; Install one exhaust heat recovery device, model SQ-5, on one 0.75m3 drainage expansion vessel; Install one exhaust waste heat recovery device, model SQ-5, on one 0.8m3 hydrophobic expansion vessel.
5、 Economic benefits
1) Economic Benefit Analysis of Installing Exhaust Waste Heat Recovery Devices on Three CY-75T/H Deaerators:
The known parameters of the deaerator are: working temperature: 104 ℃, working pressure: 0.02 MPa, rated output: 75T/H, quantity: 3 units
The inlet temperature of this waste heat recovery device is 104 ℃, the pressure is 0.02MPa, and the inlet steam volume is approximately (rated operating value of the deaerator):
0.375 T/H×3=1.125 T/H，
...... (Contact Huaneng for 0518-82239585)
Calculated based on 7200 hours of annual operation of the residual steam recovery device, standard coal can be saved in one year:
120×7200=864T
Coal saving amount equivalent to RMB 864 × 320=276000
2) Economic Benefit Analysis of Installing Exhaust Waste Heat Recovery Devices on 2 CY-35T/H Deaerators and 2 CY-35T/H Deaerators:
The known parameters of the deaerator are: working temperature: 104 ℃, working pressure: 0.02 MPa, rated output: 35T/H, quantity: 2 units; Working temperature: 104 ℃, working pressure: 0.02 MPa, rated output: 25T/H, quantity: 2 units
The inlet temperature of this waste heat recovery device is 104 ℃, the pressure is 0.02MPa, and the inlet steam volume is approximately (rated operating value of the deaerator):
0.175T/H×2+0.125T/H×2=0.6 T/H
...... (Contact Huaneng for 0518-82239585)
64×7200=460T
The coal saving amount is equivalent to RMB 460 × 320=147000
3) Economic Benefit Analysis of Installing Exhaust Waste Heat Recovery Device on One 0.75m3 Drainage Expansion Vessel:
The known parameters of the hydrophobic expansion vessel are: working temperature: 127 ℃, working pressure: 0.2 MPa, exhaust steam rate: 200kg/h;
The inlet temperature of this waste heat recovery device is 127 ℃, the pressure is 0.2MPa, and the inlet steam flow rate is 200kg/h;
From this, it can be concluded that due to its constant pressure process, the heat released by the hydrophobic expansion vessel per hour is
Q=MH=200 × 2715.92=543 × 103 kilojoules
H -- Enthalpy value of saturated steam at 127 ℃
This enthalpy value can be found from the table of water and steam properties
...... (Contact Huaneng for 0518-82239585)
The inlet water volume of this residual steam recovery device is 1.75T/H, and it is recommended to use model SQ-5.
Burning 1 kilogram of standard coal can generate 5000-6000 kcal, or 20950-25140 kilojoules of heat. Increasing the temperature of 1.75T water by 74 ℃ can save standard coal:
543×103÷25140=21kg
Calculated based on 7200 hours of annual operation of the residual steam recovery device, standard coal can be saved in one year:
21×7200=151T
The coal saving amount is equivalent to RMB 151 × 320=48000
4) Economic Benefit Analysis of Installing Exhaust Waste Heat Recovery Device on One 0.8m3 Drainage Expansion Vessel:
The known parameters of the hydrophobic expansion vessel are: working temperature: 127 ℃, working pressure: 0.2 MPa, exhaust steam volume: 300kg/h;
The inlet temperature of this waste heat recovery device is 127 ℃, the pressure is 0.2MPa, and the inlet steam flow rate is 300kg/h;
From this, it can be concluded that due to its constant pressure process, the heat released by the hydrophobic expansion vessel per hour is
...... (Contact Huaneng for 0518-82239585)
Calculated based on 7200 hours of annual operation of the residual steam recovery device, standard coal can be saved in one year:
32×7200=230T
Coal saving amount equivalent to RMB 230 × 320=73000 yuan
