Novel quenching ring for entrained-bed gasifier

The invention discloses a novel quenching ring for an entrained-bed gasifier. The quenching ring comprises an annular outer ring plate, an annular inner ring plate, an annular retainer and a descending pipe, wherein the annular outer ring plate comprises a horizontal ring face I and a longitudinal ring face I which is located on a lower face of the horizontal face I; the annular inner ring plate and the annular retainer are fixedly arranged inside the lower face of the horizontal ring face I, the annular retainer is located between the annular inner ring plate and the longitudinal ring face I, and the descending pipe is mounted at the lower end of the annular retainer; quenching liquid distribution chambers are formed between the annular retainer and the horizontal ring face I and between the annular retainer and the longitudinal ring face I and are connected with a quenching liquid conveyer; annular protective layers are arranged on fire-facing faces of the annular outer ring plate and the annular inner ring plate. According to the novel quenching ring disclosed by the invention, the fire facing face of the quenching ring is prevented from being directly brushed by high-temperature synthetic gas and cinders to be damaged, and the working temperature of the fire facing face of the quenching ring can be further greatly reduced, the service life of the quenching ring is prolonged, and the slagging outlet can be further prevented from being blocked. The novel quenching ring disclosed by the invention is easy to produce and relatively low in manufacturing and processing costs.