Process for lime slurry production

Abstract

A process for controlling scaling on and within lime slaking and handling equipment such as SDA atomizers and reducing lime usage by forming a mixture with at least one polymeric dispersant and a quantity of water and introducing the mixture to a vessel for preparation of a lime slurry.

I/We claim: 
     
         1 . A process of making an alkaline-neutralization agent, comprising the steps of:
 forming a mixture comprising at least one polymeric dispersant and a quantity of water; and   introducing said mixture to a vessel for preparation of a slurry.   
     
     
         2 . The process of  claim 1 , wherein said alkaline-neutralization agent comprises a lime slurry. 
     
     
         3 . The process of  claim 1 , wherein the step of forming said mixture comprising at least one polymeric dispersant and a quantity of water occurs prior to the step of introducing said mixture to said vessel. 
     
     
         4 . The process of  claim 1 , wherein the step of forming said mixture comprising at least one polymeric dispersant and a quantity of water occurs simultaneously with the step of introducing said mixture to said vessel. 
     
     
         5 . The process  claim 1 , wherein the step of forming said mixture further comprises the step of adding said quantity of water to said at least one polymeric dispersant. 
     
     
         6 . The process of  claim 1 , wherein the step of forming said mixture further comprises the step of adding said at least one polymeric dispersant to said quantity of water. 
     
     
         7 . The process of  claim 1 , wherein said at least one polymeric dispersant is a straight-chain polyacrylate homopolymer. 
     
     
         8 . The process of  claim 1 , wherein said at least one polymeric dispersant is heat-stable. 
     
     
         9 . The process of  claim 1 , wherein said slurry is prepared under a batch process. 
     
     
         10 . The process of  claim 1 , wherein said slurry is prepared under a continuous flow process. 
     
     
         11 . The process of  claim 1 , further comprising the step of reducing scaling. 
     
     
         12 . The process of  claim 1 , further comprising the step of reducing alkaline chemical usage. 
     
     
         13 . The process of  claim 1 , further comprising the step of reducing waste ash. 
     
     
         14 . The process of  claim 1 , further comprising the step of reducing mercury gas emissions. 
     
     
         15 . A process of making a lime slurry, comprising the steps of:
 forming a mixture comprising at least one polymeric dispersant and a quantity of water wherein said at least one polymeric dispersant is a straight-chain polyacrylate homopolymer and wherein said at least one polymeric dispersant is heat-stable;   forming a mixture comprising at least one polymeric dispersant and a quantity of water wherein said at least one polymeric dispersant is added to said quantity of water; and   introducing said mixture to a vessel for preparation of a slurry wherein said process reduces scaling, reduces alkaline chemical usage, and reduces waste ash, and reduces mercury gas emissions.   
     
     
         16 . A process of making a lime slurry, comprising the steps of:
 forming a mixture comprising at least one polymeric dispersant and a quantity of water wherein said at least one polymeric dispersant is a straight-chain polyacrylate homopolymer and wherein said at least one polymeric dispersant is heat-stable; and   forming a mixture comprising at least one polymeric dispersant and a quantity of water wherein said at least one polymeric dispersant is added to said quantity of water.   
     
     
         17 . The process of  claim 16 , further comprising the step of reducing scaling. 
     
     
         18 . The process of  claim 16 , further comprising the step of reducing alkaline chemical usage. 
     
     
         19 . The process of  claim 16 , further comprising the step of reducing waste ash. 
     
     
         20 . The process of  claim 16 , further comprising the step of reducing mercury gas emissions.