我國北方大中型沼氣工程運行成本主要包括原料費、人員工資、加熱費、電費、水費、運輸車輛燃油費等（設備折舊沒有計入）。其中運行成本占比較大的為人員工資、原料費和加熱費，所占比例超過70~90%。

　　The operating costs of large and medium-sized biogas projects in northern China mainly include raw material costs, personnel salaries, heating costs, electricity costs, water costs, transportation vehicle fuel costs, etc. (equipment depreciation is not included). Among them, the operating costs account for a large proportion of personnel salaries, raw material costs, and heating costs, accounting for over 70-90%.

　　下面以內蒙古比較有代表性的厭氧消化器容積1000m?，發酵原料為牛糞的沼氣工程，氣候條件以呼和浩特市為例，重點分析這些主要的成本費用。

　　Below is a representative anaerobic digester in Inner Mongolia with a capacity of 1000m ? and a fermentation material of cow manure for biogas engineering. Taking Hohhot city as an example under climatic conditions, the main costs and expenses will be analyzed in detail.

　　一、運行成本測算

　　1、 Calculation of operating costs

　　采用呼和浩特市的氣象資料數據進行測算，其運行成本（運行成本未將沼氣工程折舊計算在內）測算如下。

　　Using meteorological data from Hohhot city for calculation, the operating costs (excluding depreciation of biogas projects) are estimated as follows. 

　　（一）1m?沼氣的生產成本

　　（1） Production cost of 1m ? biogas

　　1原料成本0.42元，占總成本的29.4%

　　The raw material cost is 0.42 yuan, accounting for 29.4% of the total cost

　　生產1m?沼氣需0.042m?鮮牛糞，1m?鮮牛糞按10元計，1m?沼氣的原料成本為：10元×0.042=0.42元。

　　Producing 1m ? of biogas requires 0.042m ? of fresh cow manure, which is calculated at 10 yuan. The raw material cost of 1m ? of biogas is: 10 yuan x 0.042=0.42 yuan. ?

　　2加溫成本0.49元，占總成本的34.3%

　　The heating cost is 0.49 yuan, accounting for 34.3% of the total cost

　　物料增溫是中溫厭氧消化的重要條件，為保證發酵料液在35℃左右條件下正常發酵運行，需要對物料進行升溫。

　　Material warming is an important condition for mesophilic anaerobic digestion. To ensure the normal fermentation operation of the fermentation broth at around 35 ℃, it is necessary to raise the temperature of the material.

　　（1）物料升溫需熱量?1000m?的厭氧消化器容積，水力滯留期20天，每天需濃度8%的料液50噸，鮮牛糞的干物質含量為17%，故需每天加鮮牛糞23.5噸，補充水26.5噸。

　　(1) The heating of materials requires an anaerobic digester with a capacity of 1000m ? of heat, a hydraulic retention period of 20 days, and a daily requirement of 50 tons of feed solution with a concentration of 8%. The dry matter content of fresh cow manure is 17%, so 23.5 tons of fresh cow manure and 26.5 tons of supplementary water need to be added daily. ?

　　a冬季(12～2月)物料升溫需熱量

　　The heat required for material heating in winter (December to February)

　　物料溫度0℃(冬季平均氣溫-10.5℃)，補充水溫10℃。則平均每天物料增溫需熱量為：23.5×1000×(35-0)+26.5×1000×(35-10)=1.485×106kcal

　　The material temperature is 0 ℃ (average winter temperature -10.5 ℃), and the supplementary water temperature is 10 ℃. The average daily heating requirement for materials is: 23.5 × 1000 × (35-0)+26.5 × 1000 × (35-10)=1.485 × 106kcal

　　b春秋季(3～5月和9～11月)物料升溫需熱量物料溫度10℃(春秋季平均氣溫7.1℃)，補充水溫10℃。則平均每天物料增溫需熱量為：23.5×1000×(35-10)+26.5×1000×(35-10)=1.25×106kcal

　　In spring and autumn (March to May and September to November), the required heat for material heating is 10 ℃ (the average temperature in spring and autumn is 7.1 ℃), and the supplementary water temperature is 10 ℃. The average daily heating requirement for materials is 23.5 × 1000 × (35-10)+26.5 × 1000 × (35-10)=1.25 × 106kcal

　　c夏季(7～9月)物料升溫需熱量?物料溫度25℃(春秋季平均氣溫20.9℃)，補充水溫20℃。則平均每天物料增溫需熱量為：23.5×1000×(35-25)+26.5×1000×(35-20)=0.633×106kcald全年合計?全年物料升溫需熱量為：1.485×106kcal×90+1.25×106kcal×180+0.633×106kcal×90=415.62×106kcal

　　In summer (July to September), the required heat for material heating is 25 ℃ (the average temperature in spring and autumn is 20.9 ℃), and the supplementary water temperature is 20 ℃. The average daily heat demand for material heating is 23.5 × 1000 × (35-25)+26.5 × 1000 × (35-20)=0.633 × 106kcal. The total annual heat demand for material heating is 1.485 × 106kcal × 90+1.25 × 106kcal × 180+0.633 × 106kcal × 90=415.62 × 106kcal

　　（2）罐體保溫需熱量?發酵罐體保溫補充熱能應等于罐體散熱，在此過程中應考慮管道散熱損耗。散熱量計算公式為：Q=λ×S×(T1-T2)/b×3600×24?其中λ為導熱系數，采用聚氨酯發泡保溫材料，導熱系數λ=0.0275。?S為罐體散熱面面，罐體尺寸為φ9.93m×13.0m，共一座。其中：?S=(3.14×9.93×13.0+4.965×4.965×3.14)=482.74m2T1為罐內料液溫度，T1=35℃。T2為環境溫度，T2=-10.5℃(冬季)?=7.1℃(春秋季)=20.9℃(夏季)。?B為保溫材料厚度，B=100mm=0.1m。乘3600和24是將1秒的散熱量換算成1晝夜的散熱量。?a、冬季的散熱量Q=λ×S×(T1-T2)/b×3600×24×90?=0.0275×482.7×{35-(-10.5)}/0.1×3600×24×90=46965×106J=47.0×106kJ÷4.2=11.2×106kcal

　　(2) The insulation of the tank requires heat, and the supplementary heat energy for the insulation of the fermentation tank should be equal to the heat dissipation of the tank. During this process, the heat dissipation loss of the pipeline should be considered. The formula for calculating heat dissipation is: Q=λ × S × (T1-T2)/b × 3600 × 24, where λ is the thermal conductivity and polyurethane foam insulation material is used, with a thermal conductivity of λ=0.0275. S is the heat dissipation surface of the tank body, with a size of 9.93m × 13.0m, and a total of one tank body. Among them, S=(3.14 × 9.93 × 13.0+4.965 × 4.965 × 3.14)=482.74m2T1 is the temperature of the liquid in the tank, T1=35 ℃. T2 is the ambient temperature, T2=-10.5 ℃ (winter)=7.1 ℃ (spring and autumn)=20.9 ℃ (summer). B is the thickness of the insulation material, B=100mm=0.1m。 Multiplying by 3600 and 24 is to convert 1 second of heat dissipation into 1 day and night of heat dissipation. ?a、 The heat dissipation in winter is Q=λ × S × (T1-T2)/b × 3600 × 24 × 90=0.0275 × 482.7 × {35- (-10.5)}/0.1 × 3600 × 24 × 90=46965 × 106J=47.0 × 106kJ ÷ 4.2=11.2 × 106kcal

　　b、春秋季的散熱量Q=λ×S×(T1-T2)/b×3600×24×90=0.0275×482.7×(35-7.1)/0.1×3600×24×180=57597×106J=57.6×106kJ÷4.2=13.7×106kcal

　　b、 The heat dissipation in spring and autumn is Q=λ × S × (T1-T2)/b × 3600 × 24 × 90=0.0275 × 482.7 × (35-7.1)/0.1 × 3600 × 24 × 180=57597 × 106J=57.6 × 106kJ ÷ 4.2=13.7 × 106kcal

　　c、夏季的散熱量Q=λ×S×(T1-T2)/b×3600×24×90?=0.0275×482.7×{35-20.9)/0.1×3600×24×90=14554×106J=14.6×106kJ÷4.2=3.48×106kcal

　　c、 Summer heat dissipation Q=λ × S × (T1-T2)/b × 3600 × 24 × 90=0.0275 × 482.7 × {35-20.9)/0.1 × 3600 × 24 × 90=14554 × 106J=14.6 × 106kJ ÷ 4.2=3.48 × 106kcal

　　d、全年合計

　　d、 Annual total

　　空氣相對溫度取50%，風力系數取3，空隙率取1.2，則全年物料散熱量為：（11.2×106kcal+13.7×106kcal+3.48×106kcal）×50%×3×1.2=51.08×106kcal由于上述計算未考慮向地面散熱和取樣孔、溢流孔等處的散熱，實際散熱量至少為理論值的150%，即實際散熱量為：51.08×106kcal×150%=76.62×106kcal

　　If the relative temperature of the air is taken as 50%, the wind coefficient is taken as 3, and the porosity is taken as 1.2, then the annual material heat dissipation is: (11.2 × 106kcal+13.7 × 106kcal+3.48 × 106kcal) × 50% × 3 × 1.2=51.08 × 106kcal. Since the above calculation does not consider heat dissipation to the ground, sampling holes, overflow holes, etc., the actual heat dissipation is at least 150% of the theoretical value, that is, the actual heat dissipation is: 51.08 × 106kcal × 150%=76.62 × 106kcal

　　（3）室內供暖需熱量?每天供暖16個小時，一個供暖季所需的總熱量為：254×100×16×180=73.15×106kcal

　　(3) Indoor heating requires 16 hours of heating per day, and the total heat required for one heating season is: 254 × 100 × 16 × 180=73.15 × 106kcal

　　（4）管道熱損失?按以往的工程經驗，管道熱損失為總熱量的10%，計算如下：?(415.62+76.62+73.15)×106kcaI×10%=56.54×106kcal

　　(4) According to past engineering experience, the heat loss of pipelines is 10% of the total heat, calculated as follows: (415.62+76.62+73.15) × 106kcaI × 10%=56.54 × 106kcal

　　（5）總需熱量根據以上計算，系統運行全年所需熱量為：(415.62+76.62+73.15+56.54)×106kcal=621.93×106kcal?沼氣鍋爐的熱效率取70%，熱值取5000kcal/m?，則系統全年需熱量折合成沼氣為：621193.×106kcal÷5000kcal/m?÷70%=177694m?每1m?沼氣按1元計，則全年加溫成本為：1元/m?×177694m?=177694元年產氣量360000m?，產1m?沼氣的加溫成本為：177694元÷360000m?=0.494元/m?

　　(5) According to the above calculation, the total heat required for the system to operate throughout the year is: (415.62+76.62+73.15+56.54) × 106kcal=621.93 × 106kcal. The thermal efficiency of the biogas boiler is taken as 70%, and the calorific value is taken as 5000kcal/m ?. Therefore, the annual heat demand of the system is converted into biogas: 621193. × 106kcal ÷ 5000kcal/m ? ÷ 70%=177694m ?. If 1 yuan is calculated for every 1m ? of biogas, the annual heating cost is: 1 yuan/m ? × 177694m ?=177694. The annual gas production is 360000m ?, and the heating cost for producing 1m ? of biogas is: 177694 yuan ÷ 360000m ?=0.494 yuan/m ?

　　3電費成本0.12元，占總成本的8.4%

　　The cost of electricity is 0.12 yuan, accounting for 8.4% of the total cost

　　該沼氣工程每天用電量243.94度，每度電的價格按0.5元計，合電費121.97元。因此，1m?沼氣的用電成本為：121.97元÷1000m?=0.12元/m?

　　The biogas project consumes 243.94 kWh of electricity per day, with a price of 0.5 yuan per kWh, resulting in a total electricity cost of 121.97 yuan. Therefore, the electricity cost for 1m ? of biogas is: 121.97 yuan ÷ 1000m ?=0.12 yuan/m ?

　　4人工成本0.2元，占總成本的14.0%

　　The labor cost is 0.2 yuan, accounting for 14.0% of the total cost

　　沼氣工程雇員3人、每人平均月薪2000元，每月產氣30000m?（1000m?×30），生產1m?沼氣的人工成本為：2000元×3÷30000m?=0.2元/m?

　　There are 3 employees in the biogas project, with an average monthly salary of 2000 yuan per person. The monthly gas production is 30000m ? (1000m ? × 30), and the labor cost for producing 1m ? of biogas is: 2000 yuan × 3 ÷ 30000m ?=0.2 yuan/m ?

　　5維修費成本元0.14元，占總成本的9.8%

　　The maintenance cost is 0.14 yuan, accounting for 9.8% of the total cost

　　工程總投資500萬元，按慣例年維修費為工程造價的1%，故維修費為500萬元×1%=5萬元。年產沼氣360000m?，則1m?沼氣的維修成本沼氣為：50000元÷360000m?=0.14元/m?

　　The total investment of the project is 5 million yuan, and according to convention, the annual maintenance cost is 1% of the project cost, so the maintenance cost is 5 million yuan x 1%=50000 yuan. If the annual production of biogas is 360000m ?, the maintenance cost of 1m ? biogas is: 50000 yuan ÷ 360000m ?=0.14 yuan/m ?

　　6水費等其它費用0.06元，占總成本的4.2%

　　Water and other fees are 0.06 yuan, accounting for 4.2% of the total cost

　　年產沼氣360000m?，則1m?沼氣的水費、脫硫劑等其它費用為：20000元÷360000m?=0.06元/m?

　　If the annual output of biogas is 360000m ?, the water fee, desulfurizer and other expenses for 1m ? of biogas are: 20000 yuan ÷ 360000m ?=0.06 yuan/m ?

　　綜上所述，1m?沼氣的生產成本為：0.42元+0.49元+0.12元+0.20元+0.14元+0.06元=1.43元。

　　In summary, the production cost of 1m ? biogas is 0.42 yuan+0.49 yuan+0.12 yuan+0.20 yuan+0.14 yuan+0.06 yuan=1.43 yuan. ?

　　（二）沼氣工程運行總成本

　　（2） Total operating cost of biogas project

　　1m?沼氣的生產成本為1.43元，全年產氣360000m?，總成本為：1.43元×360000=514800元，即51.48萬元。

　　The production cost of 1m ? biogas is 1.43 yuan, and the annual gas production is 360000 m ?. The total cost is 1.43 yuan × 360000=514800 yuan, which is 514800 yuan.

　　注：以上部分成本測算因地域不同也略有不同，僅供參考，相關成本測算應以當地實際情況為準。

　　Note: The above cost estimates may vary slightly depending on the region and are for reference only. The relevant cost estimates should be based on the actual local situation.

　　二、項目管理對策

　　2、 Project management strategies

　　安排項目一定要慎之又慎，寧缺勿濫，所選項目除應符合項目申報的一般要求外，還應滿足以下幾個條件。

　　When arranging projects, one must be extremely cautious, preferring to be deficient over excessive. In addition to meeting the general requirements for project application, the selected projects should also meet the following conditions.

　　”

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　　1、建設單位對改善農民生活品質或治理環境污染的意愿強烈。在社會主義新農村、新牧區建設過程中，有些集體經濟實力比較強的村、嘎查，為了讓村民過上高品質的生活，愿意拿出一些錢來對沼氣工程的運行費用給予適度補貼；還有一些業主由于迫切需要治理畜禽糞便產生的污染問題，因而能夠在一定程度上接受沼氣工程的有限度虧本運行。因此，項目安排應選符合上述條件的建設單位。

　　1. The construction unit has a strong desire to improve the quality of life of farmers or control environmental pollution. In the process of building socialist new rural and pastoral areas, some villages and villages with strong collective economic strength are willing to provide moderate subsidies for the operating costs of biogas projects in order to enable villagers to live a high-quality life; Some property owners, due to the urgent need to control the pollution caused by livestock and poultry manure, are able to accept the limited loss operation of biogas projects to a certain extent. Therefore, the project arrangement should select construction units that meet the above conditions.

　　2、建設單位的沼氣發酵原料必須有保證且廉價。要認真汲取過去的教訓，對現有養殖數量不能滿足沼氣工程原料需求的應不批或緩批。要實事求是確定建設規模，防止有些業主為多爭取國家補助資金，不切實際地增大建設規模。

　　2. The biogas fermentation raw materials of the construction unit must be guaranteed and inexpensive. We should seriously learn from the lessons of the past and not approve or delay the approval of those whose existing breeding quantity cannot meet the demand for biogas engineering raw materials. We should determine the construction scale truthfully to prevent some owners from unrealistically increasing the construction scale in order to obtain more national subsidy funds.

　　3、業主在沼氣工程周邊有較多地自有土地或周邊設施農業的面積較大。沼氣工程的直接經濟效益，很大程度上需要靠沼渣沼液來實現。在當前實現沼渣、沼液有償銷售比較困難的情況下，若業主在沼氣工程周邊有較多的自有土地，沼渣、沼液的收益則可由業主自身獲取。沼氣工程周邊設施農業數量大時，有助于實現沼渣、沼液的高值利用。

　　3. The owner has a large area of self owned land or agricultural facilities around the biogas project. The direct economic benefits of biogas engineering largely rely on biogas residue and slurry. In the current situation where it is difficult to achieve paid sales of biogas residue and slurry, if the owner has a large amount of self owned land around the biogas project, the income from biogas residue and slurry can be obtained by the owner themselves. When there are a large number of agricultural facilities around the biogas project, it helps to achieve high-value utilization of biogas residue and slurry.

　　本文由  沼氣發電機組  友情奉獻.更多有關的知識請點擊  http://www.shimancang.com/   真誠的態度.為您提供為全面的服務.更多有關的知識我們將會陸續向大家奉獻.敬請期待.

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