Please select the most similar patent number from A, B, C and D. Which number is?
An oil sludge pyrolysis device, comprising an outer cylinder body (1) and an inner cylinder body (2), a spiral conveyor belt (3) being provided on an inner wall of the inner cylinder body (2), and a thermally conductive pipe (4) being provided on the spiral conveyor belt (3). Said device enlarges the heat exchange area during oil sludge pyrolysis, improves the heat exchange efficiency and the heat utilization rate, and increases the pyrolysis speed of oil sludge at a low temperature.
A: A material guide device of a three-barrel drying machine, comprising a composite cylinder body sleeved by three cylinder bodies having different diameters from large to small in a concentric mode, a feeding device (1) provided on one side of the composite cylinder body, and a transmission device (2) provided at the lower end of the composite cylinder body; wherein inner walls of an outer cylinder body (3), an intermediate cylinder body (4) and an inner cylinder body (5) are respectively provided with a spiral material raising plate; outer walls of the intermediate cylinder body (4) and the inner cylinder body (5) are respectively provided with a radial material lifting plate; one end of the inner cylinder body (5) is a material feeding port (6); the other end of the outer cylinder body (3) is a material discharging port (7); a material guide device is provided on the material discharging port (7) of the outer cylinder body (3); the material guide device comprises a mounting plate (8) and several arc material guide plates (9) uniformly provided on the mounting plate (8); a middle portion of the mounting plate (8) is provided with a mounting hole (10) cooperating with the material discharging port (7); and the mounting plate (8) is mutually welded to the inner wall of the outer cylinder body (3). The device has an advantage that the material discharging is more smooth, is simple in structure, and is convenient to use.
B: A solid hazardous waste pyrolysis process and full-set equipment, the equipment comprising a special pyrolysis box for solid hazardous waste and intermittent pyrolysis equipment. The intermittent pyrolysis equipment comprises an outer barrel (2) and a rotatable inner barrel (4); at least one pyrolysis material placement area is formed in the inner barrel (4); the placement area is formed by multiple groups of guide plates circumferentially arranged on the inner wall of the inner barrel and baffles (21) arranged on the top of guide plates at the two ends; each group of guide plates comprise vertical plates (7) and sieve plates (5) that are alternately connected; and a reaction medium (22) is provided at the bottom of the inner barrel (4). By employing the solid hazardous waste pyrolysis full-set equipment having the described structure, solid hazardous waste may be placed in the special pyrolysis box for solid hazardous waste; a box body is placed between the baffles of the pyrolysis material placement areas; after a pyrolysis device is sealed, heating may be carried out to start pyrolysis; the inner barrel rotates to drive the box body to rotate at the bottom of the inner barrel; and a material in the box body is heated, melts and falls onto the reaction medium below, thus completing pyrolysis of solid hazardous waste.
C: A conveying and cooling method for a high-temperature solid product obtained after waste plastic cracking. The conveying and cooling method comprises the following steps: 1) primary cooling: enabling the high-temperature solid product obtained after waste plastic cracking to enter a first spiral conveying apparatus (100) for cooling; 2) secondary cooling: enabling the solid product to enter a second spiral conveying apparatus (200) from the first spiral conveying apparatus (100) by means of a shifting device (500) for cooling; 3) tertiary cooling: enabling the solid product to enter a third spiral conveying apparatus (300) for cooling; and 4) storing and discharging: enabling the solid product to enter a storage tank (400), opening an electric valve (41), and discharging residues. High-temperature cracking residues are cooled in a staged mode by means of multi-stage spiral conveying; low-temperature discharging and conveying of the high-temperature residues are achieved; the residues are compressed and stacked in a spiral conveying process; self-sealing of the apparatus is achieved by means of natural gravity stacking of the residues; cracking gas is prevented from escaping; external gas is prevented from entering; and the sealing method is simple, effective and environmentally friendly.
D: Provided is an industrial continuous oily sludge thermal decomposition equipment, belonging to the field of oily sludge treatment. The industrial continuous oily sludge thermal decomposition equipment comprises a cracking furnace and a heating chamber, wherein the heating chamber is arranged outside the cracking furnace, and the cracking furnace interior comprises a full high temperature region or a low temperature region-high temperature region. The cracking furnace is provided with a conveyor chain belt, and the conveyor chain belt can be multi-layered and staggered. The end of the conveyor chain belt is a discharge port, the discharge port is connected to one end of a rotary sealing joint, and the other end of the rotary sealing joint is connected with a cooling cylinder. In the equipment, the conveyor chain belt is staggered in the vertical direction, which increases the residence time of the oily sludge in the cracking furnace, so that the pyrolysis is more sufficient. Meanwhile the length and size of the equipment is shortened, which saves equipment investment. An AC variable frequency stepless speed regulating motor is used to adjust the speed of the conveyor chain belt, so that the pyrolysis rate and residence time can be effectively controlled, and the particle size and dryness of tailings can be precisely controlled.
Answer: D