Cracking the Chinese straw hydrolysis code, YHRhas advanced technology

Foreword

 Chinese farmers have a long history of using crop straws. In the past, the agricultural production level was low and straw output was low. Except for a small amount used to feed livestock and partly used for composting, most of them were burned as fuel. However, with the development of agricultural production, the use of modern fertilizers has greatly reduced the need for fertilizers made of straw and self-use heating in agriculture, and the treatment of straw has become a major problem.


Straw burning causes environmental hazards,Policy guides the comprehensive utilization of resources

A few years ago, every time after the agricultural harvest, the straw at the top of the field was nowhere to be laid, and the incineration into ash became their only place to go. The dense smoke during the burning covered the sky and triggered the "blue sky defense battle" of the whole society. .

Straw burning will not only produce a large amount of sulfur dioxide, nitrogen dioxide, and respirable particulate matter, causing air pollution and endangering human health, but also easy to cause fires. Moreover, burning will lead to increased alkalinity of farmland soil, death of beneficial microorganisms, and underground pests. Accelerate the incubation, thereby destroying the soil structure, affecting the microcirculation of the arable land biosphere, and causing the degradation of farmland quality.

Therefore, in order to control air pollution and comprehensively strengthen the prevention and control of arable land and soil pollution, the state has issued a series of comprehensive straw utilization policies to vigorously develop rural renewable energy, protect agricultural biodiversity, and complement agricultural resources, environment, and energy ecology. Board to provide strong support for building a new pattern of green development in agriculture and rural areas.

Biomass energy is transformed into biogas energy,Turning waste into treasure boosts industry development

Biomass energy is the energy provided by living plants in nature. According to my country's "Thirteenth Five-Year Plan for Biomass Energy Development", it is necessary to coordinate the collection of raw materials in areas rich in agriculture and forestry resources, and promote the comprehensive conversion of biomass direct combustion power generation to cogeneration. It can be seen that the use of related technologies and equipment to convert waste biomass into new energy sources can not only solve the environmental pollution problem, but also alleviate the energy consumption problem, which is the best of both worlds.

The “Thirteenth Five-Year Plan for Biomass Energy Development” clearly states that the total amount of biomass resources such as crop straws and agricultural product processing residues, domestic garbage and organic waste that can be used as energy in the country is about 460 million tons of standard coal per year. By the end of the "13th Five-Year Plan" in 2020, biomass energy will account for 30% of renewable energy, surpassing the sum of photovoltaics and wind power, and straw as one of the raw materials for biomass energy utilization can be used in power generation , Heating, gas supply and other aspects play an important role.

Turning straw into biogas energy will turn straw resources into treasure. The biogas produced can be used for power generation, waste heat for heating, and the remaining biogas slurry as fertilizer. The comprehensive utilization of straw is of great significance to the development of high-quality green agriculture, the improvement of the comprehensive utilization of straw and the prohibition of straw burning.

Chinese-style straw faces difficulties in hydrolysis,YHR Environmental Concentrated on Overcoming

 Previously, most domestic straw biogas projects used European biogas production technology, but due to the differences in raw materials used by China and Europe, the project was very difficult to operate. The raw materials used in Europe are usually not only crushed to a very small size, but also use silage corn as the raw material for production. But in China, not only does it not contain corn, even the straw is dry and of varying lengths.

The organic components used by the dried straw raw materials are mainly cellulose, hemicellulose and lignin. Among them, lignin which cannot be used for anaerobic degradation wraps anaerobic degradable cellulose and hemicellulose in the form of natural Physical barrier, and in the process of biogas production and hydrolysis fermentation, it forms competitive adsorption with cellulose and hemicellulose, resulting in a very slow degradation rate of all straw, which needs to stay for 50 to 90 days, or even longer. This makes the production of biogas in China more difficult than in Europe.

Over the years, YHREnvironment has maintained scientific research cooperation with China Agricultural University and well-known European technology companies, and has developed a series of equipment and processes specially adapted to the characteristics of Chinese raw materials. YHRSAHP hydroxy cellulose hydrolysis technology, a pretreatment technology developed specifically for fermentation raw materials with high lignocellulose content such as silage corn stover, dry straw, wheat straw, rice straw, etc. Short-term hydrolysis significantly improves the rate of hydrolysis and acidification of fiber raw materials, improves the degradation rate of raw materials, and cracks the Chinese straw hydrolysis code. It has truly realized the transformation of waste into treasure and energy utilization from the past to the present.


 Create a model of domestic straw raw material project,Yingherui's environment is stable

Since 2013, YHREnvironment has been focusing on the utilization of straw biogas energy, building multiple straw comprehensive utilization projects across the country and promoting them as a demonstration project in the national biomass biogas industry.

In 2013, the Leling Shengli New Energy Large-scale Biogas Purification and Purification Gas Project undertaken by YHREnvironment, using pure straw as fermentation raw material, adopted YHRSAHP and oxygenated cellulose hydrolysis pretreatment technology to efficiently and quickly process corn stalks and produce gas The scale is 10000m³.

In 2016, the large-scale bio-gas project of Sanhe Tianlong New Building Materials Co., Ltd. constructed by YHREnvironment was the first batch of biomass natural gas demonstration projects in the country, the national straw collection, storage and transportation system construction demonstration project, the National Development and Reform Commission, the Ministry of Agriculture's bio-gas Pilot project. The project uses corn stalk + cow dung as fermentation raw material, adopts YHRSAHP hydroxy cellulose hydrolysis pretreatment technology, efficiently and quickly processes corn stalk, and the gas production scale reaches 30,000m³.

In 2019, the Harbin Ylander Rundalianhe Straw Gasification Clean Energy Utilization Project undertaken by YHREnvironment uses corn stalks as raw materials and adopts YHRSAHP hydrolytic cellulose pretreatment technology to improve the hydrolysis of straw raw materials. The acidification rate and degradation rate produce biogas, which is further combined with biogas cogeneration, with a gas production scale of 40,000 m³.

 

Providing value to customers and helping customers succeed is the core element of YHRenvironmental services, and exceeding customer expectations is our core value. By optimizing the treatment process, reducing operating costs, recycling valuable "pollutants" and turning waste into treasure, so that customers can have more benefits, it is the direction of Yinghe Rui's environmental efforts. 

In the future, we will follow the development concept of "resolute innovation, ecological development" and provide customers with quality services in the spirit of "simplification, high efficiency, collaboration, empowerment, innovation, hard work, inheritance, and development."