A Breakthrough! Harden’s Shredding Technology Helps DR Company to Achieve Production Target
At 16:50 PM on November 23, 2021, the 8 x
1MW agricultural and forestry biomass cogeneration project from DR (WuChang)
Biomass Development Limited produced 41000m³/d gas, which meant that the dry straw for biogas power generation
project successfully reached production target in China.
Since 2015, China's National Development
and Reform Commission (NDRC) and the Ministry of Agriculture have jointly
promoted the transformation and upgrading of rural biogas projects, and
encouraged the construction of large-scale industrial biogas projects and
biological natural gas projects in energy transformation. DR Biomass
Development (HK) Limited is a subsidiary company of China Resources Group that
specializes in the development and utilization of biomass energy. DR company
actively responds to the national carbon peaking and carbon neutrality goals and
the strategy of revitalizing northeast China, relies on and integrates the
group’s energy, environmental protection, agriculture, retail and other
business units, invests in bio-natural gas, organic fertilizer and other
emerging fields, creates a new business model of modern energy, environmental
protection and circular agriculture integrated development, and will strive to
make positive contributions to the revitalization of northeast China, pollution
prevention, poverty alleviation and rural revitalization. However, it is found
that the screening and shredding pretreatment system of straw can’t meet the shredding
demand for raw material in the anaerobic fermentation project, which seriously
restricts the stable production of the project.
Dry straw has strong fiber, unstable
moisture content and large soil content. Traditional shredding and pretreatment
equipment is easy to be blocked. Meanwhile, low production capacity and
automation degree result in high operation cost. In order to break through the pretreatment
problem of dry straw, Harden signed a strategic development agreement with DR Company
to increase the R&D investment in key technologies and equipment of dry straw
for biogas industry, so as to meet the needs for comprehensive utilization of
dry straw anaerobic fermentation. Harden’s R&D teams and DR company worked
together to carry out various tests on all kinds of dry straw and materials
with different water content and humidity, improved and optimized equipment to
adapt to different requirements of shredding and screening. The final
indicators have reached the technical indicators of both sides!
At present, DR (Wuchang) biomass for biogas
power generation project formally put into trial production. Harden provides a
complete set of automatic screening and shredding pretreatment system for dry
straw, which is suitable for corn, wheat, rice and other types of straw. The
capacity of the whole processing line is greater than 20t/h, ensures 30mm
discharge size of broken straw and meets the requirements of soil and impurity
rate which is less than 5%. This Pretreatment crushing system solves the
problem of straw shredding faced by anaerobic fermentation industry and
provides stable raw material supply for it.
The whole set of automatic screening and shredding pretreatment system for dry straw realizes full intelligent automatic control. The straw to be treated is automatically sent to the slat conveyor, through the linkage control of automatic unpacking system, screening machine, shredder and other equipment, the broken material will be discharged by belt conveyor after meets the size requirement.
The straw screening machine can loosen
material and screen soil at the same time. In the first part of the screening machine,
the material is handled loosely, and then the material is screened in the
latter part. Finally, the soil removal rate is more than 90%, which
significantly improves the purity of straw discharge. The screening machine is
equipped with automatic cleaning device to avoid screen blocked by foreign
object, and ensures the effect of soil removal.
The high-speed shredder provided by Harden
is specially designed for dry straw, adopts variety of technical patents, e.g.
automatic protection against foreign object, anti-blocking screen design,
intelligent pressing device, rapid tool clearance adjustment, etc., can shreds
straw down to 30mm or less in one step, realizes the double effect of shredding
and loosening. The screen mesh configured by the shredder can effectively avoid
the blocking of screen mesh and the generation of long strip material, and the
size compliance rate of the shredded material is up to 98%.
Screening and Shredding System for Dry Straw Provided by Harden
The success of automatic screening and
shredding system further reduces the cost of dry straw pretreatment, improves
the profitability of enterprises, and effectively boosts the cycle development
model of crop straw comprehensive utilization, showing the professional ability
of Harden in solid waste treatment technology and one-stop solution.
Harden always adheres to the business
philosophy of creating maximum value for customers through technological
innovation. We will undertake the social responsibility of carbon peaking and carbon
neutrality goals, continue to spare no effort to realize the value maximization
of solid waste technology and product research and development, to contribute
to the realization of carbon peaking and carbon neutrality goals.