Method for producing doubly labelled water by water distillation and distillation equipment for enrichment production of doubly labelled water

A rectification and enrichment technology, which is applied in the field of rectification devices for the production of double-standard water by water rectification and its enrichment and production of double-standard water, can solve the problems of difficult realization of pumps, mechanical failures, unstable performance, etc. The effect of shortening the balancing time and stable operation

Inactive Publication Date: 2008-07-30
JIANGSU HUAYI TECH
View PDF1 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] 2. Rotating parts (pumps, blowers) will inevitably have mechanical failures, material leakage, etc.; accidental power outages, lightning, etc. will pose a serious threat to continuous and stable operation;
[0011] 3. The delivery volume of the pump is adjusted according to the liquid level of the tower kettle, which requires a relatively complicated control and adjustment system
[0012] 4. For the subsequent stage of the cascade, it is difficult to realize the applicable pump with high head and very small flow (100-500 g / h), and the performance is also unstable

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for producing doubly labelled water by water distillation and distillation equipment for enrichment production of doubly labelled water
  • Method for producing doubly labelled water by water distillation and distillation equipment for enrichment production of doubly labelled water
  • Method for producing doubly labelled water by water distillation and distillation equipment for enrichment production of doubly labelled water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] A cascade device consisting of six towers adopts the process shown in Figure 2, and the raw material is natural water containing 0.015% deuterium and O 18 0.2%. The raw material water is pumped into the raw material high level tank by the raw material pump, and enters the middle part of the first-stage rectification tower 1a at a speed of 800 grams per minute. After the water vapor from the top of the first tower 1a is condensed, part of it enters the first tower as reflux the top of 1a, and the rest of the O 18 Stripped "waste water" discharge system. Column and tube falling film evaporators are used for tower kettle 1v~6v. Table 1 shows the inner diameters, packing types, packing heights, operating conditions and concentration of bottom products of the rectification towers 1a to 6a at all levels. After the isotope accumulation of the continuous operation system reaches equilibrium, low-concentration double-labeled water is obtained from the bottom of the fourth-sta...

Embodiment 2

[0076] A cascade device consisting of four towers adopts the process shown in Figure 2. The raw material is heavy water, which contains 99.8% deuterium and O 18 0.5%. The raw material heavy water is pumped into the raw material high level tank by the raw material pump, and enters the middle part of the first-stage rectification tower 1a at a speed of 430 grams per hour, and part of the water vapor from the top of the first tower 1a is condensed and enters the first tower 1a as reflux The rest of the "wastewater" that is almost equal to the raw material is discharged from the system. Column and tube falling film evaporators are used for tower kettle 1v~4v. Table 2 shows the inner diameters, packing types, packing heights, operating conditions, and column bottom product concentrations of the rectification towers 1a to 4a at all levels. After 580 days of continuous operation, the accumulation of isotopes in the system reached equilibrium, and the product double water was obtain...

Embodiment 3

[0080] In precision distillation, the smaller the diameter of the column, the higher the separation efficiency. In order to improve the separation efficiency and reduce the number of stages, several towers with smaller diameters are often connected in parallel in the front stage. This embodiment is 5 stages composed of 9 towers in series / parallel. The cascading method is shown in Figure 4: four towers T11, T12, T13, and T14 are connected in parallel to form the first stage, and these four towers adopt the same specification and operating conditions; two towers T21 and T22 are connected in parallel to form the second stage . The two towers adopt the same specifications and the same operating conditions; T3, T4, and T5 are respectively the 3rd, 4th, and 5th grades. The connection between stages still adopts the process shown in Figure 2, except that the steam from the bottom of T11 and T12 is mixed and then condensed and enters T21 together. (It can also be condensed separate...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a production method and a production device of chemical products, in particular to the production method of doubly labeled water consisting of deuterium and heavy oxygen O<18> enriched by a water reification method as well as a water rectification device thereof. The rectification device provided by the invention consists of a rectification tower in multilevel series or in multilevel and parallel series; each level of the rectification tower are connected in phase transition way; the connection way is to transport the steam in tower bottom to the top of the lower tower by using pressure difference and the steam is condensed to be liquid phase to enter lower level tower; ascending steam of the lower tower top is condensed to be liquid phase and then flows into higher level tower top automatically. In the invention, as a reboiler at the tower bottom adopts falling film evaporation, the tower bottom is dry all the time without the retention of liquid to greatly save the balancing time. On the other hand, as no rotating parts such as a pump, etc. is adopted, the possible troubles caused by leakage, power failure, mechanical fault, etc. can be avoided to ensure constant and reliable operation of the system, which is important for isotope separation.

Description

technical field [0001] The present invention relates to a kind of production method and production device of chemical product, specifically relate to a kind of water rectification method enrichment by deuterium D and heavy oxygen O 18 The production method of the constituted double-standard water and the water rectification device thereof. Background technique [0002] There are two stable isotopes of hydrogen in nature: H 1 (protium), H 2 (Deuterium); Oxygen has 3 stable isotopes: O 16 , O 17 , O 18 . Therefore, water composed of 2 hydrogen and 1 oxygen has 9 kinds of stable isotope molecules, and they all exist in natural water in different proportions. heavy isotope H 2 (ie D) The water formed is called heavy water. heavy isotope O 18 The formed water is called heavy oxygen water. Water composed of heavy hydrogen and heavy oxygen is called double water or double-labeled water. It is the heaviest molecule in the isotope of water. The US Chemical Abstracts CA regi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C01B5/02
Inventor 余兆钧
Owner JIANGSU HUAYI TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap