14C-urea production system
A production system, urea technology, which is applied in the field of 14C-urea production system, can solve problems such as low purity, long production cycle, and great harm to human body, and achieve the effect of simple technical route, high conversion rate, and reduction of radioactive organic waste
Active Publication Date: 2019-06-18
SHENZHEN ZHONGHE HEADWAY BIO SCI & TECH CO LTD
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Problems solved by technology
14 The existing production methods and systems of C-urea have problems such as long production cycle, low purity, and organic matter residues. 14 C-urea is more harmful to human body
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[0036] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0037] 4 The main components of the breath detection reagent used in the C breath test are 14 C-urea, that is, use 14 C marks the carbon element in urea, also known as 14 C-urea [(NH 2 ) 2 14 CO], which carry 14 C is 12 isotopes of C. If there is Helicobacter pylori (Hp) in the patient's stomach, the urease produced by it will decompose urea into 14 CO 2 , check the patient's exhaled air with supporting equipment 14 The amount of C can be used to diagnose Helicobacter pylori (Hp) infection. How to make biosafety and high reliability 14 C-urea has alway...
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The invention discloses a 14C-urea production system, which comprises a first reactor, a second reactor, a second separation device, a neutralizing device, a third separation device, a negative pressure distillation facility, and a low temperature cooling-crystallizing device. The first reactor is provided with a NH3 input end and a BaN14CN solid output end; the BaN14CN solid output end is connected to the BaN14CN solid input end of the second reactor; the second reactor comprises a sulfuric acid input end and a 14C-urea output end; the 14C-urea output end is connected to input end of the second separation device; the clean liquid output end of the second separation device is connected to the 14C-urea input end of the neutralizing device; the neutralizing device comprises a Ba(OH)2 input end and output end; the output end of the neutralizing device is connected to the input end of the third separation device; the clean liquid output end of the third separation device is connected to the input end of the negative pressure distillation facility; and the output end of the negative pressure distillation facility is connected to the input end of the low temperature cooling-crystallizingdevice.
Description
technical field [0001] The invention relates to the technical field of chemical engineering, in particular to a 14 C-urea production system. Background technique [0002] Helicobacter pylori (Hp for short) is a unipolar, multi-flagellate, blunt-rounded, spirally curved bacterium that was discovered in 1982 by Barry J. Marshall and Robin Warren ( J. Robin Warren first discovered it, and the two won the 2005 Nobel Prize in Physiology or Medicine. Subsequent studies have confirmed that this bacterium can indeed cause gastritis, chronic gastroenteritis, gastric ulcer, duodenal ulcer, non-ulcer dyspepsia and some gastric cancers. Therefore, Helicobacter pylori has attracted the attention of the medical community. The relationship between disease and disease has become a hot and difficult point in the research of global gastrointestinal disease infection for more than 30 years. [0003] At present, the methods for checking and identifying Helicobacter pylori (Hp) mainly include...
Claims
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IPC IPC(8): C07C273/16C07C273/02
CPCY02P20/141
Inventor 沈桂富杨东陈权浩
Owner SHENZHEN ZHONGHE HEADWAY BIO SCI & TECH CO LTD