Patent ID: 11865595
Assignee: CHIFENG ENVIRONMENTAL SCIENCE RESEARCH INSTITUTE
Field: Chemical engineering (Chemistry)
Classification: CPC B  Y | IPC B

Claim 1:
2. A using method of the device for wholly treating urban and rural mixed household refuse at low temperature on site according to claim 1, wherein the household refuse is continuously fed; the household refuse in a mixed state is sieved by the vibrating sieve according to viscosity, weight and size of the substances of the household refuse; metal products are sieved through a magnetic field of the magnetic separation system, and the organic substances are conveyed to the magnetic pulse mineralization reactor for terminal treatment, so as to enable efficient reduction and harmlessness of the organic substances in the household refuse, and to effectively eliminate pollution of the organic substances on environment; wherein the using method comprises:
step 1), placing the household refuse in the vibrating sieve, and sieving the substances with different viscosities, sizes and weights based on characteristics of small amplitude, high frequency and large inclination angle of the vibrating sieve, so that the metal products, the glass products and partial waste paper, packaging boxes, plastic products, wood products and dust are be separated from the household refuse;
step 2), magnetically attracting the metal products that are residual in the household refuse by an electromagnet of the magnetic separation system during vibration of the vibration sieve, and separating the metal products from the household refuse, so as to facilitate subsequent recycle;
step 3), conveying the organic products after being sieved into the magnetic pulse mineralization reactor through the spiral feeding machine, wherein content of the organic products is 90-95%;
step 4), controlling conveying amount for the household refuse through an automatic program, and maintaining the conveying amount at 0.04-0.13 t/h;
step 5), enabling the organic products to be in the magnetic pulse mineralization reactor, and maintaining a temperature of the magnetic pulse mineralization reactor at 160-200° C. under continuous action of an electromagnetic field of the magnetic pulse mineralization reactor;
step 6), circularly introducing tail gas generated in the magnetic pulse mineralization reactor into the magnetic pulse mineralization reactor after being catalyzed by plasma and ultraviolet light, removing gaseous pollutants by utilizing the plasma and the ultraviolet light, and continuously decomposing tar components in reaction gas of the magnetic pulse mineralization reactor by utilizing reaction heat; and
step 7), enabling retention time of the household refuse in the magnetic pulse mineralization reactor to be 18-28 hours, and continuously discharging the reacted ash from the magnetic-pulse-mineralization-reactor lower discharging opening by virtue of gravity.