NOVELTY - Clean fuel gas-producing and poly-generating device comprises main furnace body installed with a primary gasification steam input subassembly (3), a fuel gas output subassembly (7), a V-shaped grate (10) of high-temperature steel, a slag removing knife (11) with cracked slag, slag discharging and detecting control systems, and a temperature transducer (15) with a central microprocessor. The inner side wall of the main furnace body has high-temperature air gasification agent inlet subassembly (6), material storage storehouse (1) and controller (2).    USE - Device for producing clean fuel gas-producing and poly-generating (claimed) and for gasifying, e.g. bituminous coal, anthracitic coal, coke, stone coal, wood, bamboo, cotton stalk, or rice hull.    ADVANTAGE - The device is equipped with an automatic control system for fully automatically running in an intellectualized way. It is nearly zero-discharging and zero-polluting.    DETAILED DESCRIPTION - Clean fuel gas-producing and poly-generating device comprises:    (A) material storage storehouse (1);    (B) controller (2) for the amount of the material in the furnace;    (C) primary steam inlet (4);    (D) high-temperature gasification agent inlet (5);    (E) high-temperature air gasification agent inlet subassembly (6);    (F) fuel gas output opening (8);    (G) safe explosion release opening (9);    (H) second gasification hot air inlet (12);    (I) furnace body shell (16) with a water cooled jacket;    (J) base bracket (17);    (K) cyclone dust remover (18);    (L) nanometer tar filter screen extracting subassembly (19);    (M) first heat exchanger (20) and second heat exchanger (21);    (N) first attached product collecting storehouse (22);    (O) second attached product collecting storehouse (23);    (P) normal-temperature airflow regulating valve (24);    (Q) normal-temperature air fan (25);    (R) fuel gas on-line detector (26);    (S) fuel gas output opening total pressure and flow control system subassembly (27);    (T) fuel gas pumping explosion-proof fan (28); and    (U) fuel gas output opening (29).    The main furnace body installed with a primary gasification steam input subassembly (3), a fuel gas output subassembly (7), a V-shaped grate (10) of high-temperature steel, a slag removing knife (11) with cracked slag, a first slag discharging and detecting control system (13) capable of controlling the amount of the removed slag, a second slag discharging and detecting control mechanism (14) with cracked slag, and a temperature transducer (15) with a central microprocessor from the top down in sequence. The inner side wall of the main furnace body is installed with the high-temperature air gasification agent inlet subassembly, the material storage storehouse and the controller. The outer side wall on the upper part of the main furnace body is installed with the primary steam inlet connected with the primary gasification steam input subassembly and the high-temperature gasification agent inlet connected with the high-temperature air gasification agent inlet subassembly. The outer side wall of the main furnace body is installed with the safe explosion release opening and the fuel gas output opening. The outer side of the main furnace body is installed with the furnace body shell with a water cooled jacket. The bottom of the main furnace body is installed with the base bracket. The high-temperature gasification agent inlet is connected with the high-temperature air gasification agent outlet of the first heat exchanger. The fuel gas output opening is connected with the inlet of the cyclone dust remover, whose outlet is connected with the nanometer tar filter screen extracting subassembly of the first heat exchanger. The bottom of the first heat exchanger is connected with the high-temperature air outlet of the second heat exchanger. The fuel gas outlet of the first heat exchanger is connected with the fuel gas inlet of the second heat exchanger. The bottom of the second heat exchanger is connected with the second attached product collecting storehouse. The gasification air inlet of the second heat exchanger is connected with the normal-temperature airflow regulating valve and the normal-temperature air fan. The fuel gas outlet of the second heat exchanger is connected with the fuel gas on-line detector, the fuel gas output opening total pressure and flow control system subassembly, the fuel gas pumping explosion-proof fan and the fuel gas output opening.    DESCRIPTION OF DRAWING(S) - The drawing is a schematic view of the clean fuel gas-producing and poly-generating device.    Material storage storehouse (1)    Controller (2)    Primary gasification steam input subassembly (3)    Primary steam inlet (4)    High-temperature gasification agent inlet (5)    High-temperature air gasification agent inlet subassembly (6)    Fuel gas output subassembly (7)    Fuel gas output opening (8)    Safe explosion release opening (9)    V-shaped grate (10)    Slag removing knife (11)    Second gasification hot air inlet (12)    First slag discharging and detecting control system (13)    Second slag discharging and detecting control mechanism (14)    Temperature transducer (15)    Furnace body shell (16)    Base bracket (17)    Cyclone dust remover (18)    Nanometer tar filter screen extracting subassembly (19)    First heat exchanger (20)    Second heat exchanger (21)    First attached product collecting storehouse (22)    Second attached product collecting storehouse (23)    Normal-temperature airflow regulating valve (24)    Normal-temperature air fan (25)    Fuel gas on-line detector (26)    Fuel gas output opening total pressure and flow control system subassembly (27)    Fuel gas pumping explosion-proof fan (28)    Fuel gas output opening (29)