In the course of the injection molding machine fever laps when the
tube is heated to melt, most of the heat directly into the atmosphere,
less heat recovery, exhaust gas take away some of the heat, these
emissions are directly discharged into the atmosphere, both pollution
the environment and the loss of more heat, while allowing low thermal
efficiency, heat loss big equipment. Without any form of insulation,
directly exposed to the atmosphere, the metal surface to the atmosphere
exudes a lot of heat, heavy pollution, exhaust gas is not in any way
remove dust.
On our planet, every day was taken away by the immense heat of the
flue gas, environmental pollution is staggering. How injection molding
industry energy conservation, improve the working environment, reduce
injection workshop temperature is a concern. Waste heat recovery
injection molding machine is an important aspect of energy conservation
work, if all of the flue gas heat recovery are performed, its cost is
very impressive.Visit Tayu Machinery
1 energy-saving programs
Existing injection molding machine is equipped with systems for
plastic dehumidifying dryer, electric heating mode to provide heat,
carry a certain amount of heat from the exhaust outlet air heat drying
drums, when this part of the heat directly into the workshop, a workshop
area will increase the dust content in the air and affect the operation
of the health of workers, on the other hand will increase energy
consumption and increase the financial burden on businesses.
Injection molding machine installation preheating saving compared to the situation before and after the collection device
For the deficiencies of the prior art, this paper provides a heat
recovery heat cycle apparatus, melt rubber tube around the heating
section to install waste heat collection device, when the use of the
work of the heat drying tub plastics dehumidification drying process.
Has some water, hot air from the dust discharge 4 through the pipe
into the dust circulating hot air dehumidifying device 3 by its handle
3, a portion of the heat source after the next adjustment turbine 6 to
power a hot gas, such that a flow cycle, after processing proceeds 2,2 6
by plastic barrel and the heat of the hot gas entering the further heat
treatment; and another portion of hot air heated gas through 5 are 2, 4
which can adjust the temperature of the air flow rate within 6 to
ensure that the actual 4 correspond to the set temperature. When the
temperature inside the 4 lower than the set, 5 to 6 signals, increase
speed to increase the output amount of wind at 6 driving action, enter
4, after two high temperature air increases, the temperature rise inside
the 4, when the inner 4 a higher temperature than the set temperature
is high, the signals 5 to 6, 6 to reduce the speed and reduce the output
of wind, thus reducing the gas temperature entering the 4, 4
temperature is lowered.
2 Economic Benefit Analysis
2.1 Technical Data Features
(1) System power saving 15% to 35%, saving more than 90% of the dryer;
(2) high temperature 270 ℃ ~ 280 ℃, low temperature -70 ℃;
(3) production workshop temperature drop of up to 3 ° ~ 8 °, the working environment has greatly improved;
(4) CO2 emissions than conventional reduced by 45% to 50% and no SO2, fly ash, slag, NOx emissions low;
(5) Tensile strength ≥0.02MPa;
(6) corrosion resistance, aging, waterproof, anti-oil, anti-oil pollution, environmental protection, pollution-free;
(7) Easy to install, good service, toughness, flexible bandage;
(8) for different temperatures, the shape of the injection molding machine.
2.2 Case Study
Each machine per year festival electric quantity is: 2.53 * 24 * 365
* 0.918 = 20400 the entire system can save standard coal 34t per year
of carbon dioxide emissions 15t.
Seen in this light, greatly reducing the cost and save the
traditional dryer wasted capacity power distribution system, greatly
improved the use of power, more power is available for additional
devices without the need for installation of transformers, if need to
use the air conditioning plant, even more can save a lot of air
conditioning costs; due to the heat melt tube is recycled, separate
installation of double filtration intake apparatus can be made between
each injection molding machine is not affected by contamination, and
completely within the filter drum dust released into the atmosphere,
prevents the gas pollution workshop on the health of employees play a
protective role, workshop temperature drop of up to 3 ° ~ 8 °, the real
solution to the problem of high temperature workshop, which will help
lower the staff in a comfortable working environment jobs.
Problems with waste heat utilization presence of Recommendation 3
Problems below.
(1) China's plastics processing companies across the country, but
the equipment skill levels, a lot of business equipment needs further
transformation;
(2) ban plastic industry voices, but in the rural market is still
widely used plastic products, cutting costs has become a top priority
for enterprise development;
(3) Due to the dissemination of information channels and lack of
funds business, which greatly restricted the lot to promote this
technology, many enterprises lack advanced energy-saving technologies
and mechanisms for clean development mechanism, advanced technology
service providers have no way to understand the situation of
enterprises;
(4) high-temperature waste heat utilization technology after years
of development is now more mature, successful cases also showed its
economic benefits, but the huge potential of the low-temperature waste
heat utilization needs further development.
Corresponding recommendations are described below.
(1) the production and use of business management to achieve "the
proper use of scientific management, careful maintenance, regular
maintenance, reasonable lubrication, planned maintenance, improve
equipment availability, the equipment in good condition;
(2) pollution energy consumption is a top priority, as one of the
main thermal energy-saving, more active policies should be introduced,
given the appropriate financial support, and guide enterprises to play
an active role in industry waste heat recovery;
(3) to carry out waste heat resources research and gather relevant
advanced technology, management and strengthen information dissemination
and other cases, strengthen the research in low-temperature waste heat
utilization technology, promoting the application of heat technology.
(4) recommendations have the potential of waste heat utilization
enterprise, considering the system as far as possible, the overall
improvement, and focus on the refinement of the use of automatic control
systems.
Source:http://injection-molding-machine.tayu.cn/injection_molding_machine/439.html
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