Abstract:
The system and methods described herein solve problems of inaccurate flow control, loss of optimum reactant gas feed ratios, and the associated inefficiencies brought on by variable humidity in reactant feedstream gases during production of hydrogen cyanide by an Andrussow process.
Abstract:
A method and a system for recovering hydrogen from a process for making hydrogen cyanide are described herein. In the method, hydrogen is recovered from a gaseous waste stream of an Andrussow process. The method comprises the following steps: (a) adjusting a reaction mixture comprising methane, ammonia and oxygen to provide the reaction mixture with sufficient oxygen to generate a gaseous waste stream that has at least 40% hydrogen after removal of ammonia and recovery of hydrogen cyanide; and(b) removing components from the gaseous waste stream to generate recovered hydrogen.
Abstract:
The invention relates to an ionic liquid composition and a method for preparing the ionic liquid. The ionic liquid comprises a cation containing the Formula I , disclosed, and wherein: n is 1 or 2, R 1 is selected from the group consisting of: H, C 1 - C 12 alkyl, aryl or together with R 2 may form a heterocyclic ring, and R 2 is selected from the group consisting of: H, C 1 - C 12 alkyl, aryl or together with R 1 may form a heterocyclic ring, and R 3 is selected from the group consisting of hydrogen and C 1 -C 12 alkyl, wherein if n is 1, then R 3 is C 1 -C 12 alkyl; and wherein R 1 and R 2 are not simultaneously selected from hydrogen. The method for the preparation of the ionic liquid composition provided herein starts with at least one N-substitution of the compound of Formula II , as herein disclosed, and wherein: n is 1 or 2, R 3 is selected from the group consisting of hydrogen and C 1 -C 12 alkyl, wherein if n is 1, then R 3 is C 1 -C 12 alkyl. Further provided is a use of the ionic liquid in a chemical method including at least a method for electro-chemical oxidation.
Abstract:
An improved process for the hydrolysis of nylon polymer is herein disclosed using ionic liquids and optionally one equivalent of sulfuric acid per amide residue of the polymer. The process provides for a simplified means for separation of the hydrolyzed polyamide constituent monomers.
Abstract:
The disclosure relates to apparatuses and methods for production of polyamide polymers utilizing additive injectors. In one embodiment, an apparatus for batch production of a polyamide polymer is provided. The apparatus can include a salt strike vessel configured to produce a polyamide salt composition and an evaporator configured to reduce water content of the polyamide salt composition to produce a polymerizable polyamide composition. The apparatus can further include a first autoclave operably connected to the evaporator such that a first portion of the polymerizable polyamide composition is deliverable from the evaporator to the first autoclave, and a second autoclave operably connected to the evaporator such that a second portion of the polymerizable polyamide composition is deliverable from the evaporator to the second autoclave. The first additive injector can be associated with the first autoclave and can be configured to inject additives into the first autoclave.
Abstract:
Processes and systems for the production of hydrogen cyanide via the Andrussow process are described. A reaction zone, wherein oxygen, ammonia, and methane can be allowed to react in the presence of a catalyst comprising platinum to provide hydrogen cyanide. A desulfurization zone, wherein a feed stream comprising sulfur and at least one of the oxygen, the ammonia, and the methane can be contacted with a desulfurization material to produce a sulfur- reduced feed stream that is provided to the reaction zone. In an example, the desulfurization material includes zinc oxide.
Abstract:
Methane and ammonia raw materials are typically the major costs for HCN production. The methods described herein can be used to vary the molar ratio of methane to ammonia during HCN production to reduce costs.
Abstract:
The invention relates to an ionic liquid composition and a method for preparing the ionic liquid. The ionic liquid comprises a cation containing the Formula I, disclosed, and wherein: n is 1 or 2, R1 is selected from the group consisting of: H, C1 - C12 alkyl, aryl or together with R2 may form a heterocyclic ring, and R2 is selected from the group consisting of: H, C1 - C12 alkyl, aryl or together with R1 may form a heterocyclic ring, and R3 is selected from the group consisting of hydrogen and C1-C12 alkyl, wherein if n is 1, then R3 is C1-C12 alkyl; and wherein R1 and R2 are not simultaneously selected from hydrogen. The method for the preparation of the ionic liquid composition provided herein starts with at least one N-substitution of the compound of Formula II, as herein disclosed, and wherein: n is 1 or 2, R3 is selected from the group consisting of hydrogen and C1-C12 alkyl, wherein if n is 1, then R3 is C1-C12 alkyl. Further provided is a use of the ionic liquid in a chemical method including at least a method for electro-chemical oxidation.