Process for preparing nanotitanic oxide form industrial propane

The invention discloses a method for preparing nano titania by using industrial propane and realizes the preparation process of the nano titania (TiO2) by the method of flame and vapor deposition, taking industrial propane Q/SH007.02.19-87 as a fuel, air as an oxidant and titanium tetrachloride as a precursor; the volume flow ratio of the air and the titanium tetrachloride is 26:1 to 20:1; secondary air is taken as a carrier gas of the precursor, titanium tetrachloride, and the mass flow ratio of the secondary air and the titanium tetrachloride is 20:1 to 30:1; the mass flow ratio of the air and the titanium tetrachloride is 80:1 to 150:1; the apparent remain time of the titanium tetrachloride in a flame and vapor deposition reactor is 0.03s to 0.5 s, the temperature for collecting product is 150 DEG C to 500 DEG C. The nano titania prepared is low in cost, high in purity and spheric in shape and the average grain size thereof is 30 nm to 50 nm and the content of rutile is 10 percent to ...

Double effect intermittent cooling type degassing device and its use

The degassing device includes two specially designed serial high-efficiency degassing cylinders and one intermittent cooling exchanger for condensation. It is used in coagulating bath for continuous production of viscose fibre to reduce H2S and CS2 content in liquid to below 6 mg/l. It has high degassing efficiency.

Method and device for extracting metal indium in LCD by virtue of chloridizing volatilization with PVC as a chloridizing agent

The invention discloses a method and a device for extracting metal indium in LCD by virtue of chloridizing volatilization with PVC as a chloridizing agent. The method comprises the steps of (1) putting PVC powder into the first quartz reactor of a first electric furnace and putting desiliconized LCD glass substrate powder into the second quartz reactor of a second electric furnace, (2) introducing N2, firstly increasing the temperature of the second electric furnace to the range of 500+/-100 DEG C, after the temperature is stable, starting increasing the temperature of the first electric furnace to the range of 400+/-100 DEG C, next, continuing reacting for 20-40 minutes, volatilizing and condensing the indium chloride generated through the reaction to the lower end of the second quartz reactor, and trapping and collecting silica wool. The method is capable of realizing the recovery of the indium from the LCD glass substrate powder; as a result, a new way for effectively treating the waste ...

Double effect intermittent cooling type degassing device and its use

COMBINED SMOKE FURNACE

From device including retrieving metal indium in indium discarded object

The utility model belongs to the technical field of the chemical industry equipment and specifically relates to a from device including retrieving metal indium in indium discarded object. The device includes gas cylinder, first fixed bed pyrolysis oven, second fixed bed pyrolysis oven, first drexel bottle, second drexel bottle, active carbon adsorption post and gas analysis appearance, place the PVC powder in the first quartzy reactor that sets up in the first fixed bed pyrolysis oven, get rid of tar through first drexel bottle after, gaseous quartzy reactor of second and the LCD glass substrate powdered reaction that gets into second fixed bed pyrolysis oven of surplus HCl, the indium chloride condensation of formation is absorbed by the second drexel bottle by silica wool entrapment, surplus HCl in second quartzy reactor bottom, absorbs the back through the active carbon adsorption post again, process gas analysis appearance emits into in the air. The utility model discloses simple structure ...