The development of the hottest biomass gas industr

2022-10-20
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The development of biomass gas industry faces three "but"

"we should give play to the platform role of the alliance in scientific and technological innovation, integrate the advantageous resources on the biomass gas industry chain, and base ourselves on the following: adopt high activity and high-strength polyamide to design and manufacture oil pans, meet the needs of energy conservation, environmental protection and new energy, give play to the circular economy industry chain, and cultivate biomass gas strategic emerging industries"

natural gas is a relatively clean and discolored external wall that will help improve energy efficiency. It is predicted that by 2015, China's natural gas supply structure will be 170 billion cubic meters of domestic gas, 90 billion cubic meters of net imports, and natural gas consumption will reach 260 billion cubic meters, accounting for about 8% of disposable energy consumption from the current 4%. China's demand for natural gas is rising rapidly, but with the increasing depletion of fossil energy, it is very urgent to find new ways of renewable energy

at the "annual meeting of technological innovation strategic alliance of urban biomass gas industry and the third biomass gas industry forum" held recently, Wang Wei, vice chairman of technological innovation strategic alliance of urban biomass gas industry and professor of Tsinghua University, said that developing biomass gas industry can enhance China's independent innovation ability and international competitiveness, and seize the commanding height of a new round of global economic and technological development; It can also promote the upgrading of industrial structure, realize the transformation of economic development mode, and promote the sustainable development of economy and society. Therefore, it is very necessary and of great strategic significance

"we should give play to the platform role of the alliance in scientific and technological innovation, integrate the advantageous resources in the biomass gas industry chain, based on China's energy conservation, environmental protection and new energy needs, give play to the circular economy industry chain, and cultivate biomass gas strategic emerging industries." Wang Wei said

it is reported that the strategic alliance for technological innovation in the urban biomass gas industry, whose color is yellowish translucent, was established in 2010. It is the first batch of pilot alliances approved by the Ministry of science and technology. There are 48 member units, including 8 universities, 4 scientific research institutes, 2 public institutions and 34 enterprises. In 2012, it won the title of A-level alliance in the industrial alliance evaluation held by the Ministry of science and technology

the market is expanding but not fully opened

biomass refers to various organisms produced by photosynthesis, such as atmosphere, water, land, etc., that is, all living organic substances that can grow are generally called biomass. A large amount of biomass energy is hidden in urban biomass waste, and its high water content provides favorable conditions for the bioenergy conversion of this kind of waste. Using urban and industrial biomass wastes as raw materials to produce biomass gas can reduce waste, improve the urban ecological environment, and produce bioenergy. It covers the two strategic emerging industries of "energy conservation and environmental protection" and "new energy". It is a strategic emerging industry spanning multiple industries

at present, China's biomass gas industry market is expanding. Lixiujin, a professor at Beijing University of chemical technology, said that by 2015, 1261 municipal waste biogas (including landfill gas) projects have been built or are under construction in China, including 13 mixed waste, which can treat 06 million tons of waste annually and produce 80million cubic meters of biomass gas; There are 48 kitchen waste, which can treat 05 million tons of waste annually and produce 280million cubic meters of biomass gas; There are 200 municipal sludge, which can treat 06.7 million tons of waste annually and produce 276 million cubic meters of biomass gas; There are 1000 landfills, which can treat 135 million tons of waste annually and produce 2.59 billion cubic meters of biomass gas

in addition, 3590 industrial waste residue and wastewater biogas projects have been built or are under construction, including 290 waste residues, which can treat 25 million tons of waste annually and produce 900million cubic meters of biomass gas; There are 3500 waste water, which can treat 900 million tons of waste water annually and produce 4.5 billion cubic meters of biomass gas. The production capacity of "biogas" has been built or is under construction, including 3.226 billion cubic meters in cities, 5.4 billion cubic meters in industry and 7.5 billion cubic meters in agriculture, with a total of 16.126 billion cubic meters, accounting for 14.9% of China's annual natural gas production and 11% of its annual consumption

"the total gas production potential of biogas in China is 301.7 billion cubic meters/year, which is more than twice the national natural gas consumption of 147.1 billion cubic meters in 2012. Calculated by a quarter of development and utilization, it can reach about 50% of the national natural gas consumption." Li Xiujin said that China has a large number of natural gas filling stations in operation, so there is no need to develop the back-end market, and the market is huge

from a local perspective, Hu Yongdong, director of the science and Technology Department of the environmental protection department of Guangxi Autonomous Region, said that Guangxi is short of oil and gas, but if the organic pollutants produced by sugarcane and cassava starch produced in Guangxi, namely waste residue, are used to produce gas for re purification, it can reach 3billion cubic meters, equivalent to five times the use of natural gas in Guangxi in 2014

"however, the problem is that we still rely mainly on government investment, which accounts for between 30% and 40%. This market has not been fully opened, and social capital has not been brought into this market to drive the development of our economy." Hu Yongdong said

"at present, China's biogas industry has not yet formed a real industry, and is in the transition stage and turning point from 'positive development' to 'rapid development'." Li Xiujin said

a variety of new technologies have been successfully developed, but they are not yet systematic.

China's biomass gas technology and pilot bases are also constantly improving and growing. Wang Wei said that the urban biomass gas industry technology innovation strategic alliance pilot research and development service base is the largest domestic scientific and technological resource sharing platform in this field that can provide pilot research and development services. The base has 369 sets of various instruments and equipment, and has successively built 10 pilot production lines. In 2014, three pilot production lines for hydrogen production from biomass chemical chain, vehicle mounted mobile hydrothermal and microalgae culture were added

among them, hydrothermal drying technology solves the common problem of difficult sludge dewatering, realizes the mechanical high dryness dewatering of sludge, and can meet the needs of subsequent disposal and utilization, with sludge reduction of more than 70%; Hydrothermal pretreatment high concentration anaerobic digestion technology solves the common problems of poor biodegradability and low conversion efficiency of sludge, and realizes high concentration feeding of sludge and organic matter conversion rate of more than 60%; The PSA purification technology of biogas/landfill gas solves the common problems of low biogas/landfill gas grade and poor resource utilization efficiency. The purity of biogas is greater than 97%, and the recovery rate of methane is greater than 95%; The anaerobic pyrolysis and gasification technology of biomass waste solves the common problems of low calorific value of pyrolysis syngas and poor gas taste, and the calorific value of syngas is greater than 10000 kJ/m3

although technology is advancing rapidly, Li Xiujin believes that China's biogas technology is not systematic, "know technology, but do not master technology, lack long-term in-depth research and core technology; know equipment, but can not produce equipment of the same quality, process and equipment are not matched, and manufacturing quality is poor." Therefore, he stressed that China should pay attention to the innovation of technology and equipment, so as to standardize, serialize and complete equipment, not just a single technology and a single equipment

"in order to rapidly promote the development of urban biomass gas industry, with the support and help of the Ministry of science and technology and Beijing Municipal Science and Technology Commission, Tsinghua University led the establishment of the strategic alliance for technological innovation of urban biomass gas industry". Wang Wei said that the alliance, with the purpose of "association, incubation, communication and service", plays a very important role in guiding the direction of industrial development, integrating scientific and technological innovation resources, promoting the formation of biomass gas industry chain, integrating and cultivating industrial backbone teams, and serving the scientific decision-making of the government

there is huge room for appreciation, but the subsidy is not in place.

Hu Yongdong calculated the cost of biogas, that is, the purchase of biogas from enterprises is about 0.6 yuan/cubic meter, and the cleaning cost is 1.2 yuan/cubic meter. At present, the delivery of compressed gas is 2.5-2.7 yuan/cubic meter. After the acquisition of the pipeline company, the pipeline gas is 5 yuan/cubic meter. Vehicle gas is 5 yuan/cubic meter. The gross profit is about 2 yuan/cubic meter. The construction cost of a 10000 cubic meter/day gas station is about 35million yuan. The cost will be recovered in about 5-7 years

lixiujin said that according to the statistics in September 2013, the average price of natural gas for vehicles in 32 cities across the country had reached 4.28 yuan/cubic meter at that time, and it will increase significantly in the future. Therefore, high-grade "biogas" wants to develop in the direction of high-grade "biological natural gas", the market is huge, and there is also a lot of room for appreciation

biogas is a very important part of biogas. From 2003 to 2014, China has invested hundreds of billions of yuan to support the development of biogas, of which the central government invested 36.4 billion yuan

Li Jingming, director of the agricultural ecology and resource protection station of the Ministry of agriculture and Secretary General of the China biogas society, said that in 2015, China's national biogas projects were transformed and upgraded, with an investment of 2billion yuan, giving priority to supporting super large projects focusing on biogas. However, raw materials and end markets are uncontrollable. "The collection, storage and transportation system of raw materials has not been improved, resulting in high collection, transportation and storage costs; the transaction price of raw material prices is uncontrollable, and the phenomenon of sitting on the ground rising prices is extremely common, resulting in the loss and bankruptcy of many enterprises; owners in some areas are not interested in the income of organic waste, and they are still burned and discharged everywhere. The cost of biogas production and operation is still relatively high, which is difficult for many users to accept; the stability and suitability of the gas provided by biogas projects Usability needs to be further improved, and users take a wait-and-see attitude; The financial subsidy policy is neither clear nor lasting, so that enterprises and investors cannot see the profit point. "

therefore, Li Jingming suggested that the sustainable and healthy development of the biogas industry should be promoted in the form of price leverage and inclusive system with the terminal market as a breakthrough; Formulate standards and establish a remote management information platform for biogas projects; Establish project operation and enterprise reputation evaluation mechanism; The government should not use government behavior to control the market, should not completely give up inaction, and policies should be effective for a long time

"internationally, Germany, Sweden and other biogas developed countries' support for biogas projects is mainly reflected in the commercialization of the back-end, such as biogas power generation, gas injection, biogas purification, heat recovery, etc." Li Xiujin said that at present, China only has subsidies for the construction of the front-end of rural biogas projects, but there are no subsidies for biogas power generation, biogas purification and biogas fertilizer utilization, and there is no profit or benefit pulling mechanism to promote the development of biogas industry

it is reported that the price of biological natural gas in Sweden continues to rise, which has been matched with the price of gasoline, that is, the gas price is 0.9 of the oil price, and has achieved full marketization

"in order to provide more perfect products and services for regional customers, future subsidies should be developed from the front-end construction subsidies to the back-end subsidies, that is, gas price subsidies." Li Xiujin said

Hu Yongdong said that price reform is still needed to form a reasonable project return mechanism; Further open the market, promote the formation of environmental protection markets such as government procurement services, and improve the efficiency of pollution control and resource recycling

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