NOVELTY - A straw biogas supply station comprises acidification tank (1), anaerobic tank (5), gas storage cabinet (8), desulfurization device (6), fire retardant device (7), 1st connecting pipe (3), and 2nd connecting pipe (4) in which acidification tank contains feed inlet set with cover (2), acidification tank, anaerobic tank, gas storage cabinet, desulfurization device, and fire retardant device are sequentially connected in series by 1st connecting pipe, 2nd connecting pipe is connected to acidification tank and anaerobic tank, and 2nd connecting pipe contains reflux pump (9).    USE - A straw biogas supply station (claimed).    ADVANTAGE - Straw biogas supply station reduces pollution and has improved efficiency, and biogas has high calorific value, good purity, and low impurity content.    DETAILED DESCRIPTION - A straw biogas supply station comprises acidification tank (1), anaerobic tank (5), gas storage cabinet (8), desulfurization device (6), fire retardant device (7), 1st connecting pipe (3), and 2nd connecting pipe (4) in which acidification tank contains feed inlet set with cover (2), acidification tank, anaerobic tank, gas storage cabinet, desulfurization device, and fire retardant device are sequentially connected in series by 1st connecting pipe, 2nd connecting pipe is connected to acidification tank and anaerobic tank, 2nd connecting pipe contains reflux pump (9), 1st connecting pipe between acidification tank and anaerobic tank contains control valve (10), and end of 1st connecting pipe is connected to user joints (11). An INDEPENDENT CLAIM is included for production of straw biogas which involves selecting straw, manually removing leaves, sections, and sheath to obtain rod-shaped straw pole, cutting into 1-2 cm segments, crushing, mixing crushed straw:urea:lime with weight ratio of 100:1-3:2-5 to obtain straw residue, covering with plastic thin film, sealing for 5-10 days, opening plastic thin film, mixing straw residue:water with weight ratio of 100:20-30 to obtain dark-brown straw sending to acidification tank, opening reflux pump to send biogas from anaerobic tank to acidification tank with weight ratio straw paste:biogas of 100:5-15, hydrolyzing straw paste into monosaccharides, amino acids, glycerol, fatty acids, and low-molecular weight substances for 14-17 days to form straw liquid, opening control valve after 5-9 days, sending straw liquid into anaerobic tank, closing control valve, forming biogas in anaerobic tank for 9-11 days, and sending biogas in anaerobic tank to gas storage cabinet.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic diagram of straw biogas supply station.    Acidification tank (1)    Cover (2)    1st connecting pipe (3)    2nd connecting pipe (4)    Anaerobic tank (5)    Desulfurizing device (6)    Fire retardant device (7)    Gas storage cabinet (8)    Reflux pump (9)    Control valve (10)    User joints (11)