Evaporator and process for continuously producing 38-58% liquid calcium chloride

A calcium chloride liquid and evaporator technology, applied in evaporation, chemical instruments and methods, separation methods, etc., can solve the problems of inability to continuously produce, reduce heat exchange efficiency, affect evaporation rate, etc., and achieve high evaporation intensity and comprehensive energy. The effect of reducing consumption and shortening the process flow

Inactive Publication Date: 2003-09-17
岳中洲
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Scarring will reduce heat transfer efficiency, increase energy consumption, and cannot be continuously produced. Generally, the evaporator can only run for 5 to 9 days, and the production efficiency is low.
The following three traditional solutions also have different shortcomings: ① Two evaporators are used, one for the other
This method needs to requisition or rent a large amount of land, so it has certain limitations, and when the beach is exposed to 27-33Be°, there are still a small amount of scale components in the brine, which will also affect the evaporation rate in the future.

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
  • Evaporator and process for continuously producing 38-58% liquid calcium chloride
  • Evaporator and process for continuously producing 38-58% liquid calcium chloride
  • Evaporator and process for continuously producing 38-58% liquid calcium chloride

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The structure of the corrugated tube evaporator is shown in Figure 1. The preheater 1 is connected to the heating chamber 2 through pipelines. The heating chamber is connected to the separation chamber 5 through the upper and lower circulation pipes 3 and 4 respectively. The separation chamber is connected to the condensing chamber through pipelines. 6, the circulation pump 7 is installed on the lower circulation pipe, and the liquid outlet pump 9 is installed on the liquid outlet pipe. The heating chamber of the evaporator is made of titanium or stainless steel, and the upper circulation pipe 3 is made of a variable diameter pipe that becomes thinner and thicker. Inverted U-shaped pipe, the circulation liquid outlet S8 of the lower circulation pipe is drawn from the center of the separation chamber, and the liquid inlet of the raw material liquid is set at the downside JS1 of the inverted U-shaped pipe of the upper circulation pipe and the upper part of the downlink sect...

Embodiment 2

[0045] Double-single-effect evaporation process is adopted. The structure of the evaporator is the same as in Example 1.

[0046] The technological process for continuous production of 38% to 58% calcium chloride liquid by double-single-effect adiabatic evaporation is as follows: figure 2 As shown: that is, the low-enthalpy steam enters the heating chamber from the steam side of the heating chamber 16 of the evaporator, and the raw material liquid flowing out from the raw material liquid storage tank 10 is pumped into the side entrance of the inverted U-shaped pipe of the upper circulation pipe 3 by the raw material liquid pump 11 After entering the separation chamber 12, the circulating liquid drawn from the center of the separation chamber is pumped into the heating chamber 16 through the circulating pump 13, and the finished liquid flowing out from the bottom of the separation chamber is pumped into the desalination system 17 through the outlet pump 14. After the single-ef...

Embodiment 3

[0048] A multi-effect evaporation process combining downflow and flow is adopted. The structure of the evaporator is the same as in Example 1.

[0049] The process flow of continuous production of 38% to 58% calcium chloride liquid by multi-effect evaporation combined with flow and flow is as follows: image 3 Shown: Add the by-product salt of the desalination process into the I-effect evaporation system as the scale dissolution medium when driving. After preheating, the raw material solution with a concentration of 10% and a temperature of 80°C enters from the upper part of the I-effect pump 24 and the downlink side of the II-effect upper circulation pipe at the same time, and the finished liquid after flashing through the I-effect separation chamber 25 is mixed with the raw material solution After that, the I-effect pump 24 is pumped into the I-effect heating chamber 26 and the II-effect separation chamber 27 respectively, and the circulating liquid flowing out from the II-...

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

An evaporator and its continuous production process of 38-58% calcium chloride liquid, the process flow is the use of forced circulation of steam with low enthalpy value and multi-effect evaporation in a special liquid feeding mode. The heating chamber is made of titanium or stainless steel. The U-shaped pipe of the upper circulation pipe is a variable diameter pipe. The outlet of the circulating liquid is drawn from the center of the separation chamber. In the upper part of the descending section, the liquid inlet of the separation chamber is 1.8-6.5m away from the demister, the volume below the liquid inlet is 55-95% of the system volume, and the finished liquid outlet is at the bottom of the separation chamber. The invention has the advantages of less investment, short process, simple operation and good energy-saving effect. Applicable to ammonia and alkali plants, salt chemical industry, paper making, etc. 4 In the scarring process.

Description

technical field [0001] The invention belongs to an inorganic salt chemical production process and its special equipment, in particular to an evaporator and its new process for continuously producing 38%-58% calcium chloride liquid. Background technique [0002] At present, the technological process of producing calcium chloride by using Solvay's alkali-making waste liquid is as follows: the ammonia distillation waste liquid is pumped into the clarifier tank, and the raw material solution containing about 8% to 11% of calcium chloride passes through the overflow pipe After entering the storage tank, the raw material liquid is pumped into the I-effect evaporator to be heated and concentrated to 15-20% and then sent to the II effect. In the II effect, it is evaporated to 32-39% under negative pressure and sent to the desalination system as the finished liquid. Finally, use III effect or IV effect (some use other types of evaporators) to evaporate to 38-58% calcium chloride. Ho...

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 Patents(China)
IPC IPC(8): B01D1/00
Inventor 岳中洲
Owner 岳中洲
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