Abstract: The disclosure provides a vehicle body rear structure, which can reduce damage to the vehicle during a collision from the rear. The vehicle body rear structure includes a chassis rear, a hook reinforcement part fixed to a lower surface of the chassis rear; and a hook fixed on a back side of the chassis rear through the hook reinforcement part, in which the hook reinforcement part includes a plurality of part members independent from each other, the plurality of part members are connected in series and joined in a front-back direction of the vehicle to form a joint boundary part, and the joint boundary part is disposed with a weakened part on a side close to the chassis rear.

Abstract: An exhaust gas treatment method and system of a cement burning facility, wherein a chlorine concentration of the collected fine powder dust is set in a range of 5 to 20% in such a manner that when a part of exhaust gas is extracted as extracted gas from a lowermost part of a preheater, or a kiln inlet part of a cement kiln, a cement raw material is dispersed and the temperature of the extracted gas is held in a range of 950° to 1150° C. By adjusting the dispersion amount of the cement raw material, the extracted gas is cooled to a melting point or less of a chlorine compound, and a classification particle size in a solid-gas separator is then adjusted in a range of 12 ?m to 30 ?m, to separate for removal and collection fine powder dust.

Abstract: An object of the present invention is to provide an exhaust gas treatment method and system of a cement burning facility which can be configured by general-purpose apparatuses, and which is capable of improving the handling property of collected fine powder dust and thereby realizing a stable operation without the need of maintenance. To this end, according to the present invention, the chlorine concentration of the collected fine powder dust is set in a range of 5 to 20% in such a manner that when a part of exhaust gas is extracted as extracted gas from a lowermost part of a preheater 3, or a kiln inlet part 2 of a cement kiln 1, a cement raw material is dispersed and the temperature of the extracted gas is held in a range of 950° C. to 1150° C.