NOVELTY - Converting methanol into hydrogen fuel by using remaining heat of industrial kiln comprises (1) starting up kiln to burn and (2) heating the used heat-transfer air stream by using remaining heat of the kiln, guaranteeing reaction temperature of methanol in conversion device, and providing guaranteeing conditions for producing hydrogen stably.    USE - The method is useful for converting methanol into hydrogen fuel by using remaining heat of industrial kiln (claimed).    ADVANTAGE - This method uses heat-transfer air system to replace heat conductive system realize to prepare hydrogen by using methanol; it simplifies the equipment for converting the methanol to prepare hydrogen; it reduces equipment and operation cost; it saves energy and protect device; and it releases national pressure of supplying petroleum fuel so it is convenient to popularize and apply.    DETAILED DESCRIPTION - Converting methanol into hydrogen fuel by using remaining heat of industrial kiln comprises (1) starting up kiln to burn: (A) using catalyst to activate and protect the system, realizing to activate the catalyst in the conversion device; (B) taking out the burnt high temperature fume, heating the flow air as heat-transfer medium; (C) reducing temperature of high temperature the heat-transfer air stream after adjusting to heat, keeping temperature within 250-265 degrees C when reaching the conversion device; (D) conveying liquid methanol through measuring, inputting it to the 240-250 degrees C of conversion device filled with catalyst after pre-heating and gasifying; (E) gaseous methanol in the conversion device generating conversion reaction to generate fuel hydrogen under the action of catalyst, and storing it; (F) when the stored fuel hydrogen reaching the use pressure, inputting it into kiln to light to burn, realizing starting burning of kiln; (2) heating the used heat-transfer air stream by using remaining heat of the kiln, guaranteeing reaction temperature of methanol in conversion device, and providing guaranteeing conditions for producing hydrogen stably: (a) after the kiln being burnt stably, stopping using fume to provide heat for the conversion device; (b) conveying the heat-transfer air stream, and heating the heat-transfer air stream by using the remaining heat of hydrogen in kiln; (c) adjusting temperature of the conveyed high temperature heat-transfer air, guaranteeing it to keep temperature within 250-265 degrees C when reaching the conversion device; (d) conveying liquid methanol through measuring, inputting it into conversion device to maintain hydrogen conversion reaction after pre-heating and gasifying; and (e) leading out the generated hydrogen, storing, using for continuous burning of the kiln. An INDEPENDENT CLAIM is included for a device system for converting methanol into hydrogen fuel by using remaining heat of industrial kiln comprising kiln (38), hydrogen storing tank (34), and pipeline with outlet valve (33) of hydrogen storing tank for conveying hydrogen to kiln (38), combustion-supported air blast blower (34) and pipeline for conveying air to kiln (38), methanol fuel tank (20) and methanol conveying pipeline with switch valve (21) and measuring pump (22), burner (1) for starting up and burning chamber (2) for starting up, it also has heat medium air blast blower (36) and pipeline for conveying heat-transfer air stream connected with it, the pipeline is divided into three sections connected in turn from front to end, the front section of pipeline is connected with the heat medium air blast blower (36), the second section of pipeline is heated section (35) for absorbing remaining heat and heating the heat-transfer air stream conveyed by the heat medium air blast blower (36), where the heated section (35) is set in remaining heat area of kiln (38), the third section is pipeline connected with the heated section (35) to set outside the kiln (38), and connected with the heat medium adjusting chamber (4) through heat medium air separation valve (25); de-super-heater (6) connected with the heat medium adjusting chamber (4) through de-super-heater switch valve (5); heating chamber (8) connected with the heat medium adjusting chamber (4) through heat medium air adjusting valve (26); conversion device (11), over-heating device (13) and gasification device (15) set in the heating chamber (8) in turn, where top of the conversion device (11) is connected with the top of the over-heating device (13) through over-heating device switch valve (39), bottom of the conversion device (11) is connected with hydrogen storage tank (34) through the pipeline; top of the over-heating device (13) is connected with top of the gasification device (15), bottom of the gasification device (15) is connected with methanol conveying pipeline; end of the heating chamber (8) is connected with chimney (19) through induced draft fan (18); the burning chamber (2) for starting up is connected with the heat medium adjusting chamber (4) through pipeline with separation valve (3); top of the conversion device (11) is connected with catalyst activation and protection system through access valve (12) of the catalyst activation and protection system; and temperature and pressure measuring instruments are mounted on the heat medium adjusting chamber (4), heating chamber (8), conversion device (11), over-heating device (13), gasification device (15), and hydrogen storage tank (34).    DESCRIPTION OF DRAWING(S) - The drawing shows the block diagram of the device system for converting methanol into hydrogen fuel by using remaining heat of industrial kiln.    Burner (1)    Burning chamber (2)    Separation valve (3)    Heat medium adjusting chamber (4)    De-super-heater switch valve (5)    De-super-heater (6)    Heating chamber (8)    Conversion device (11)    Access valve (12)    Over-heating device (13)