Microwave-heating continuous denitration apparatus
A denitration apparatus was developed for use in a process for producing a powder of uranium dioxide, plutonium dioxide or their mixture and is to be used as material for the production of nuclear fuel from a solution of uranyl nitrate, plutonium nitrate or their mixture. More specifically, the invention concerns a microwave heating denitration apparatus which causes …
UO2 Ceramic Grade Powders Prepared by Direct Microwave …
In this paper, the denitration process was studied by depressing the pressure inside the vessel where the solution is denitrated. Intermediate and final products were …
80 mL Pressure Vessel, Quartz
Twelve high purity quartz 80mL vials. Working volume is between 5mL and 55mL. For use with Discover SP-D 80 ... Microwave Drying. SAM 255; close Hydrolysis. Discover Prep Hydrolysis; MARS 6 Hydrolysis; close Microwave …
quartz microwave denitration process vessel
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Development of a Process for Co-Conversion of Pu-U …
Vol. 20, No. 7 (July 1983) REVIEW (M. Koizumi ei al.) 531 denitration apparatus scralching olf llle denilraled calciiialioii - I educlion ball Illill MOX from tile vessel furnace Fig. 1 Flow sheet of the process for co-conversion of Pu-U nitrate solutions using microwave heating method Denitration Vessel : 20crnZ Pyrex (Slop1 - Glass Vessel
Development of Microwave Heating Method for Co …
1. Denitration Reaction It is widely recognized that dielectrics are internally heated up in a microwave electrical field. The MH method is such a process that Pu-U nitrate solution is heated up, concentrated and then denitrated to MOX powder by …
Characteristics and Sinterability of MOX Powder Prepared by …
Based on the successful development of the co-conversion process, the microwave heating direct denitration facility with a 10 kg MOX/d capacity has been constructed adjacent to the reprocessing plant.
Thermal Denitration
calciner consisted of a 4-inch-diameter quartz reactor held between two nonrotating, stainless steel pillow blocks. The quartz reactor has nine dimples, approximately 1 inch in diameter and 0.5 inch deep, used as mixing flights when the unit is in operation. The quartz reactor has surrounding it a 1-zone clamshell heater with insulating collars.
Systems for Microwave-Assisted Wet Digestion
3.3.1. Microwave-Assisted Pressurized Wet Digestion. Closed vessel MW-assisted digestion technology has been acknowledged as one of the best solutions for clean chemistry …
Process Vessel
The design specifications for the Process Vessel includes: Material of construction Parts in contact with the media: SS 316 L; Internal surface Ra <= 0.8, Electro-polished; Components selected are of reputed makes; Agitation System (Mechanical mixer/ Magnetic ) – …
Development of Microwave Direct Denitration Technology …
This process involves the single pot dissolution and denitration of rejected fuel pellets in HNO 3 (batch process) under a specified microwave power-temperature profile described in details ...
Advanced review of the contributing factors for the …
A temperature study was conducted demonstrating the heating effect of exposure to MW radiation on PTFE vessels which were empty or had 20 ml water. Infrared imaging …
SCP SCIENCE Microwave DigeS
ion SySteMSSCP SCIENCE offers 3 types of microwave digest. on systems. NovaWAVE SA: a focused microwave digestion system which can digest up to 12 samples simultaneously; each …
UO2 Ceramic Grade Powders Prepared by Direct Microwave Denitration …
In this paper, the denitration process was studied by depressing the pressure inside the vessel where the solution is denitrated. Intermediate and final products were characterized. It was demonstrated that when working pressure ranges between 520 and 970 hPa during denitration, high density UO2 pellets can be obtained without resorting to a ...
UO 2 Ceramic Grade Powders Prepared by Direct Microwave Denitration …
Based on the successful development of the co-conversion process, the microwave heating direct denitration facility with a 10 kg MOX/d capacity has been constructed adjacent to the reprocessing plant.
BLADE
Simply add your sample and acid to the BLADE vessel and snap on a cap. Load your vessel into the autosampler and the BLADE will then process your samples automatically, including cool down. No vessel assembly and an easy to clean high purity quartz vessel make this the clear choice for modern laboratories digestion needs. Learn more
Development of a continuous homogeneous process for denitration …
Based on the laboratory generated data [] and on the description of the apparatus reported in literature [], an optimum design was made for pilot plant scale experiments and is shown in Fig. 2.The reactor, a borosilicate glass vessel fitted with ports on the lid for temperature sensor, pressure gauge and for admitting formaldehyde was placed on an electric heating …
Ship QUARTZ (Oil/Chemical Tanker) Registered …
Vessel QUARTZ is a Oil/Chemical Tanker, Registered in Malta. Discover the vessel's particulars, including capacity, machinery, photos and ownership. Get the details of the current Voyage of QUARTZ including Position, Port Calls, …
Scheme of an installation for denitration of nitric acid …
The installation consisted of a UHF oven 2 with the magnetron output power of 800 W and radiation frequency of 2450 MHz (Samsung, MW73VR, Malaysia), a system for feeding into quartz reaction ...
UO{sub 2} Ceramic Grade Powders Prepared by Direct Microwave …
Journal Article: UO{sub 2} Ceramic Grade Powders Prepared by Direct Microwave Denitration at Reduced Pressures
Development of recycling processes for clean rejected
Denitration process vessel: Three types of quartz process vessels (1 l each) namely dish shaped, wide neck and narrow neck beakers were taken for MicroWave Direct Denitration experiments. 3. Jaw crusher: The feed material was passed through the no …
Research Progress of SCR Denitration Catalyst in NOx …
Through the regeneration process, the mechanical properties of the catalyst can be restored to 85 ~ 90%, and the activity can be restored to 90%. Aiming at the collapse of the honeycomb structure of the bulk powder denitration catalyst, it cannot be used by regeneration.
Application of Microwave Radiation to Produce Uranium …
Abstract The possibility of producing UO2 powder from UO3 using microwave radiation (power 300 W) in the presence of organic compounds with amino groups: carbohydrazide (CH), acetohydroxamic (AHA), and aminoacetic (glycine) acids has been investigated. It was found that in these processes in an oxygen-free atmosphere, UO2 is …
Quartz Microwave Denitration Process Vessel
In this work, the effects on the process of the microwave denitration while using an adiabator are also investigated. Namely, the temperature distribution in the reactor and the efficiency of …
Synthesis of Mixed Actinide Oxides Using Microwave …
A pilot installation for preparing actinide oxides by microwave denitration was designed and tested. ... 2, the bubbler; 3, the dispensing vessel; 4, the waveguide) and (b) the magnetron control ...
MARS 2
A moderate microwave digestion system with optional disposable inserts. Digest more samples in less time with MARSXpress vessels and optional disposable Teflon, Glass, or Quartz inserts. ... Vessel inserts offer a convenient way to process samples with little to no vessel cleaning. The choice of insert will depend upon digestion temperature and ...
Preparation of uranium oxides by reductive denitration of
Autoclave denitration of solid uranyl nitrate in the presence of hydrazine hydrate at 120°C under the action of microwave radiation (MWR) leads to the formation of uranium dioxide with simultaneous breakdown of excess hydrazine hydrate and nitrate ions. The reaction yields UO2 when performed in an open system in a reducing medium and U3O8 when performed …
Synthesis of Mixed Actinide Oxides Using Microwave …
The plutonium content was analyzed by the α-radiometric method. Energies 2022, 15, 6618 4 of 9 Figure 1. Scheme of the laboratory microwave denitration unit in the glove box. 2.2. Mixed U and Ce Oxides Produced in a Microwave Denitration Pilot Unit To study the scaling effect, a mock-up of the microwave denitration pilot unit was created.