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Polyaluminum chloride and aluminum chlorohydrate, processes and compositions: high-basicity and ultra high-basicity products

A technology of general formula and product, applied in the field of producing high basicity polyaluminum chloride and basic aluminum chloride, can solve the problems of powder explosion, highly turbid batch materials, poor predictability, etc.

Inactive Publication Date: 2009-05-20
NEXT CHEM LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Aluminum bombs are easier to handle and more reactive (typically require 5-7 day reaction time), but the process is less predictable; often highly turbid batches require extensive settling and filtration operations
Aluminum powders offer shorter reaction times (1-4 days depending on the scale of the reaction), but require special procedures due to the powder's potential to explode when exposed to air, standing or with sparks

Method used

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  • Polyaluminum chloride and aluminum chlorohydrate, processes and compositions: high-basicity and ultra high-basicity products
  • Polyaluminum chloride and aluminum chlorohydrate, processes and compositions: high-basicity and ultra high-basicity products
  • Polyaluminum chloride and aluminum chlorohydrate, processes and compositions: high-basicity and ultra high-basicity products

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0128] Embodiment 1: produce high alkalinity PAC

[0129] Electrodialysis module: Eurodia 6 (20 membrane pairs)

[0130] Temperature 60°C

[0131] Membranes: Neosepta CMX and ASM

[0132] Raw materials: 40% PAC, Holland Chemical PACL-300

[0133] Consumption: 40% PAC

[0134] Enrichment solution: CaCl 2

[0135] Dilute 50 L of 40% PAC with 50 L of deionized water. The solution was stirred and heated to 90°C. The solution was kept at this temperature for 1 hour and then topped up with distilled water back to a total volume of 100 liters (to make up for evaporation losses). After cooling to 60° C., the resulting solution was fed to the electrodialysis module as the above-mentioned depleting solution.

[0136] The enrichment solution is 2M CaCl 2 solution (10 L). The enrichment solution compartment is equipped with a supply of Ca(OH) 2 Equipment added to maintain pH equal to or greater than 0.5 during operation. The spent solution was heated to 60°C and maintained at ...

Embodiment 2

[0139] Embodiment 2: produce ultra-high alkalinity PAC

[0140] Electrodialysis module: Eurodia 6 (20 membrane pairs)

[0141] Temperature 60°C

[0142] Membranes: Neosepta CMX and ASM

[0143] raw material:

[0144] Depletion solution: 70% PAC from Example 1

[0145] Enrichment solution: 40% PAC (diluted 1:1 with water)

[0146] Dilute 58 liters of 70% PAC (15.4% Al 2 o 3 ); the stirred solution was heated to 90°C. The solution was maintained at this temperature for 1 hour, then cooled to 60°C, and the resulting solution was then fed to the electrodialysis module as the depleted solution described below.

[0147] In this example, the enrichment solution was obtained by diluting 23.5 liters of 40% PAC with 3 liters of water.

[0148] The enrichment and depletion solutions were cycled and a potential gradient of 22 volts was applied to the cell (approximately 0.8 volts / membrane pair). Initial current limited to 50mA / cm 2 . This voltage was maintained for the remainde...

Embodiment 3

[0151] Embodiment 3: produce ultra-high alkalinity PAC

[0152] Electrodialysis module: Eurodia 6 (15 membrane pairs)

[0153] Temperature 55°C

[0154] Membranes: Neosepta CMX and AHA

[0155] raw material:

[0156] Depletion solution: 70.4% PAC (15.9% Al 2 o 3 )

[0157] Enrichment solution: 70.4% PAC (15.9% Al 2 o 3 )

[0158] In this example, for 21 liters of 70.4% (15.9% Al 2 o 3 ) Alkalinity of the PAC heat treatment. This heat treatment step consisted of heating the stirred PAC solution to 90°C and maintaining this temperature for 1 hour. After cooling to a temperature of 55° C., 14.7 liters of this solution were added to the consuming solution container in the ED module; 6.3 liters of this solution were added to the receiving solution container in the ED module. Applying 18 volts to the electrodes starts a cycle of consuming solution and receiving solution. The initial current density is 50 mA / cm 2 . The run was terminated after passing through 22.4 mole...

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Abstract

The invention relates generally to processes for the production of high- basicity and ultr- high basicity polyaluminum chlorides including aluminum chlorohydrate. The processes can produce products of a wide range of basicities and are particularly useful in producing high basicity products. The process can produce a wide range of solution concentrations and are particularly useful in producing high solution concentrations. The processes described generate high purity products, which are free of by-product salt(s). The processes described herein can also be utilized to produce enhanced efficacy polyaluminum chlorides including aluminum chlorohydrate. When compared to conventional processes for manufacturing these compounds the processes disclosed herein are unique in so far as the disclosed processes do not require aluminum metal as a starting material. The products of the processes are suitable in applications including water purification, catalysts, and antiperspirants. In addition,the invention is directed to the products prepared by the processes described herein.

Description

[0001] Cross References to Related Applications [0002] This application is based on 35 U.S.C. § 119 (e) requirements of William E. Pratt and Joseph J. Stevens, submitted on January 6, 2006, entitled "Process for Increasing the Basicity of Polymetal Halides". Halides)" U.S. Serial No. 60 / 756,848 (Attorney Case No. 186931 / US). [0003] This application also claims under 35 U.S.C. § 119(e) of William E. Pratt and Joseph J. Stevens, filed October 17, 2006, entitled "Polyaluminum Chlorides and Basic Aluminum Chlorides, Process and Composition: Perbasic U.S. Serial No. 60 / 829,804 (Attorney Case No. 18 6931 / US / 2) , the entire contents of which provisional application is hereby incorporated by reference. field of invention [0004] The present invention relates to a process for the production of high basicity polyaluminum chloride and basic aluminum chloride by electrodialysis. Background of the invention [0005] Polyaluminum chloride (PAC) is the name given to a class of comp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B9/00C01B9/02A61K8/26A61K8/28A61K8/44A61Q15/00C01G25/00
Inventor 威廉斯·E·普拉特约瑟夫·J·斯蒂文斯三世彼得·戈登·西蒙斯
Owner NEXT CHEM LLC
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