Foreword:
Condensed water contains 20%-30% of the total heat of steam, which is a considerable waste heat resource. The recovery of condensate has considerable economic and social benefits.
1, The recycling system saves about 1,200 tons of steam per year.
2, The recycling system can save steam costs of RMB 240,000 per year.
3, The payback period is approximately 10-12 months.
First, the introduction of recycling equipment
Steam Condensate Recovery Unit - This unit can recover 80-100 degree high temperature condensate in air conditioning and domestic water. Recycling condensate is the most basic step in the optimization of steam system. It is the easiest step to see results. A step that is easier for you to achieve. This is the most economical start from the establishment of energy-saving awareness, to the implementation of specific measures, the investment recovery period is mostly completed within one year, this is your project for the company to quickly build a career! According to the site conditions, we will pass the high temperature of our company's condensate recovery pump and condensate waste heat recovery device.
The condensed water is recovered, and the recovered condensed water and the hydration of the volumetric heat exchanger are exchanged for heat recovery to achieve the purpose of recycling the condensed water.
two, Device performance
1. It can recover condensed water discharged from several gas equipments with different pressures at the same time;
2, can simultaneously recover intermittent heating, intermittent cooling equipment condensate;
3. It can recover condensed water of several unequal pressure running equipments at the same time;
4. It can recover condensed water in high-speed rotating equipment;
5. It can recover the condensed water in the equipment without back pressure requirements;
6. It can reduce the back pressure of the steam equipment, so that the vapor-liquid two-phase flow volume in the condensate water pipeline can be quickly contracted and decompressed, so that the condensed water in the steam equipment can be quickly discharged, and the productivity of the steam equipment is improved;
7. Ensure that the steam condensate is discharged at low temperature;
8. Save steam consumption.
three, Installation and operation of the device 1. The device is fast-installed, has good integrity, small floor space, no foundation required for installation, large random arrangement, few movable parts and long service life;
2, fully automatic operation, can achieve unattended;
3. The product has no noise, no pollution and stable operation;
four, Device efficiency
1. Direct benefit Steam condensate, high temperature water, is a heat source with high heat content, using our equipment and technology,
Under the premise of ensuring the normal use of air conditioning and hot water systems, the ultimate recycling can save energy. The steam consumption is significantly reduced, while avoiding a large amount of environmental pollution caused by the discharge of high-temperature condensate, energy saving, emission reduction, and real use as early as one day, benefiting one day earlier.
2. Comprehensive benefits (1) Under the premise of the same heat load, reduce the amount of steam;
(2) The system is independent, and the recycling system does not affect the air conditioning and water supply systems;
(3) The condensate discharge temperature is lowered;
(4) The temperature of the feed water of the volumetric heat exchanger is increased, the temperature difference of the bubble in the heat exchanger is reduced, the thermal expansion and contraction of the heat exchanger is reduced, and the service life of the volumetric heat exchanger is prolonged;
(5) The temperature difference between the water supply and the volumetric heat exchanger is small, and continuously enters the heat exchanger, and the steam pressure is stable;
(6) No secondary steam pollution caused by high temperature condensed water and noise during operation of the trap to improve the working environment;
Fives, Payback period
The site knows that the steam equipment mainly has two plate heat exchangers, two volumetric heat exchangers and two lithium bromide units. The board is used for air conditioning heating before and after the winter. The lithium bromide unit is used for air conditioning and refrigeration in the summer. The volumetric heat exchanger is used for all seasons of domestic water. The steam consumption of the equipment can be estimated according to the power of the equipment.
According to the situation on the spot, the steam consumption of each plate heat exchanger is about 1.4t/h, the steam consumption of each volumetric heat exchanger is 1t/h, and the total steam consumption is 4.8t/h, so the amount of condensed water It is 4.8t/h.
1. Assume that the condensate temperature at the pump outlet is 85 degrees, and the condensate of 4.8t/h of 85 degrees condensed water is heat exchanged by the water heat exchanger to 50 degrees of water = 4.2x4800x35 = 705600KJ / h.
2. We convert according to the steam used to generate so much heat. The latent heat of steam is 2200KJ/kg, and the steam saved is 320kg/h.
3. Due to the loss of condensate heat and equipment operation efficiency, it is impossible to achieve 100% recovery. The recovery efficiency is calculated based on a conservative estimate of 85%. It is known that the steam consumption is 272kg/h.
4. The air-conditioning and hot water system are operated 24 hours a day. There will be a peak period and a stable period. Considering the average, we calculate the running time of about 15 hours per day. It is known that the steam saving is about 4t/day.
5. Steam costs about 200 yuan / ton, saving steam costs 800 yuan per day.
6. The cost of the reference equipment is approximately 10-12 months.
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