US 11,865,595 B2
Device for wholly treating urban and rural mixed household refuse at low temperature on site and using method thereof
Weizun Li, Tianjin (CN); Peng Ji, Tianjin (CN); Tianliang Xia, Tianjin (CN); Yuandong Xia, Tianjin (CN); Ruifeng Zhang, Tianjin (CN); Xunwei Wang, Tianjin (CN); and Mingyan Yu, Tianjin (CN)
Assigned to Nankai University, Tianjin (CN); Chifeng Environmental Science Research Institute, Chifeng (CN); and Tianjin Shangyusheng Technology Dev., Co., Ltd., Tianjin (CN)
Filed by Nankai University, Tianjin (CN); Chifeng Environmental Science Research Institute, Chifeng (CN); and Tianjin Shangyusheng Technology Development Co., Ltd., Tianjin (CN)
Filed on Aug. 24, 2021, as Appl. No. 17/410,494.
Claims priority of application No. 202011174351.6 (CN), filed on Oct. 28, 2020.
Prior Publication US 2022/0126336 A1, Apr. 28, 2022
Int. Cl. B09B 3/40 (2022.01); B09B 3/20 (2022.01); B03B 9/06 (2006.01); B03C 1/22 (2006.01)
CPC B09B 3/40 (2022.01) [B03B 9/06 (2013.01); B03C 1/22 (2013.01); B09B 3/20 (2022.01)] 4 Claims
OG exemplary drawing
 
1. A device for wholly treating urban and rural mixed household refuse at low temperature on site, the device comprising a vibration sieving and crushing system, a magnetic separator, conveyor belts, a magnetic pulse mineralization reactor and a tail gas purifying device;
wherein the device for wholly treating urban and rural mixed household refuse at low temperature on site further comprises:
feeding openings, wherein the household refuse is fed into one of the feeding openings that is formed in a front end of the vibration sieving and crushing system through a belt conveyor comprised in the device for wholly treating urban and rural mixed household refuse at low temperature on site;
discharging openings comprise:
a vibrating-layer lower discharging opening;
a magnetic-separator lower discharging opening; and
a magnetic-pulse-mineralization-processor lower discharging opening;
a tail gas outlet;
pipelines;
electromagnetic generators arranged on two side walls of the magnetic pulse mineralization reactor;
a rotating device arranged at a bottom of the magnetic pulse mineralization reactor; and
a water absorption device and an ultraviolet purifying device which are fixed in the tail gas purifying device, wherein the ultraviolet purifying device is filled with Degussa P25 TiO2 filler and comprises:
a far ultraviolet reaction device with a wavelength of 185 nm; and
an ultraviolet reaction device with a wavelength of 254 nm that are arranged in series;
wherein the vibration sieving and crushing system leaves bricks, tiles, and glass products comprised in the household refuse on a vibrating sieve under vibration;
organic substances, and metal products comprised in the household refuse enter a lower sieving and crushing system comprised in the device for wholly treating urban and rural mixed household refuse at low temperature on site through sieve pores of the vibrating sieve, crushing cutter heads are arranged at a front part of the sieving and crushing system and are configured for crushing the household refuse;
substances in the household refuse after being crushed enter a rear magnetic separation system comprised in the device for wholly treating urban and rural mixed household refuse at low temperature on site;
the metal products are separated from the household refuse under magnetic force in a spiral conveying process of conveying blades comprised in the device for wholly treating urban and rural mixed household refuse at low temperature on site;
the household refuse after being sieved enters a spiral feeding machine comprised in the device for wholly treating urban and rural mixed household refuse at low temperature on site through a pushing outlet, so that the household refuse is fed into the magnetic pulse mineralization reactor;
the magnetic pulse mineralization reactor is a continuous cylindrical reaction device;
continuous rotation of the magnetic pulse mineralization reactor is achieved through a rolling shaft base comprised in the device for wholly treating urban and rural mixed household refuse at low temperature on site, so that the household refuse is continuously pushed towards the magnetic-pulse-mineralization-reactor lower discharging opening during reacting;
circulating nitrogen is introduced at a magnetic-pulse-mineralization-reactor feeding opening to enable external air not to enter the magnetic pulse mineralization reactor;
tail gas generated by the magnetic pulse mineralization reactor enters the tail gas purifying device;
the tail gas purifying device is a sealed box and is positioned on outside the magnetic pulse mineralization reactor;
air induction operation is performed at a rear end of the tail gas purifying device through a negative pressure fan comprised in the device for wholly treating urban and rural mixed household refuse at low temperature on site;
the tail gas after being purified passes through a nitrogen separator comprised in the device for wholly treating urban and rural mixed household refuse at low temperature on site to generate high-purity nitrogen;
the high-purity nitrogen is fed into an inlet of the magnetic pulse mineralization reactor through a high-purity nitrogen recycling pipeline, and residual gas of the tail gas after being purified is discharged from a tail gas discharge opening;
the vibrating-layer lower discharging opening is configured for continuously discharging the bricks, the tiles, and the glass products comprised in the household refuse;
the magnetic-separator lower discharging opening is configured for continuously discharging the metal products in the household refuse to facilitate recycle; and
the magnetic-pulse-mineralization-processor lower discharging opening is configured for discharging reacted ash from the magnetic pulse mineralization reactor.