摘要:
A process is provided for the treatment of an acidic aqueous effluent derived from a chlorine or chlorine compound bleaching process. The acidic effluent is reacted with a neutralizing base selected from carbonates, hydroxides and oxides of Al, Cr, Co, Fe, Mg, Mn, and Ni. The neutralized effluent is concentrated and residual base and HCl are subsequently recovered. The concentration of neutralized effluent may be accomplished by passing the neutralized effluent through the cooling tower of the pulp mill.
摘要:
This invention relates to a transition metal catalyst compound represented by the structure: wherein: each X is, independently, a hydride, a halogen, a hydrocarbyl, a substituted hydrocarbyl, a halocarbyl, or a substituted halocarbyl; w is 2; each R1, R2, R3, and R4 is, independently, a hydrogen, a hydrocarbyl, a substituted hydrocarbyl, a halocarbyl, a substituted halocarbyl, a halogen, an alkoxide, a sulfide, an amide, a phosphide, a silyl or another anionic heteroatom-containing group, or independently, may join together to form a C4 to C62 cyclic or polycyclic ring structure; each R5, R6, and R7 is, independently, a hydrogen, a hydrocarbyl, a substituted hydrocarbyl, a halocarbyl, a substituted halocarbyl, a halogen, an alkoxide, a sulfide, an amide, a phosphide, a silyl or another anionic heteroatom-containing group, or independently, may join together to form a C4 to C62 cyclic or polycyclic ring structure; each R8 and R9, is, independently, a hydrogen, a hydrocarbyl, a substituted hydrocarbyl, a halocarbyl, or a substituted halocarbyl, a halogen, an alkoxide, a sulfide, an amide, a phosphide, a silyl or another anionic heteroatom-containing group; R10 is a hydrogen, a hydrocarbyl, a substituted hydrocarbyl, a halocarbyl, or a substituted halocarbyl, a halogen, an alkoxide, a sulfide, an amide, a phosphide, a silyl or another anionic heteroatom-containing group; x is 1, 2, 3 or 4; L is a neutral ligand bonded to M; M is titanium, zirconium or hafnium; and m is 0, 1 or 2.
摘要:
The present invention is directed toward Group 4, 5, 6, 7, 8, 9, 10 or 11 transition metal compounds containing neutral, mono- or di-anionic tridentate nitrogen/oxygen based ligands that are useful, with or without activators, to polymerize olefins, particularly α-olefins, or other unsaturated monomers. For the purposes of this disclosure, “α-olefins” includes ethylene. The present invention is also directed toward Group 4, 5, 6, 7, 8, 9, 10 or 11 transition metal compounds containing neutral, bidentate nitrogen/oxygen based ligands that are useful to polymerize olefins, particularly α-olefins, or other unsaturated monomers.
摘要:
In an embodiment of the invention, aqueous growth medium in a pond can be used to grow algae which can be pumped to a primary dewatering device where the algae can be separated from the harvested growth media based on the flow of the harvested growth media and gravity. The flow through the primary de-watering device can be optimized to maintain log phase growth in the pond, while minimizing the pumping cost and maximizing the concentration of total solids in the primary de-watered algae.
摘要:
The present invention is directed toward Group 4, 5, 6, 7, 8, 9, 10 or 11 transition metal compounds containing neutral, mono- or di-anionic tridentate nitrogen/oxygen based ligands that are useful, with or without activators, to polymerize olefins, particularly α-olefins, or other unsaturated monomers. For the purposes of this disclosure, “α-olefins” includes ethylene. The present invention is also directed toward Group 4, 5, 6, 7, 8, 9, 10 or 11 transition metal compounds containing neutral, bidentate nitrogen/oxygen based ligands that are useful to polymerize olefins, particularly α-olefins, or other unsaturated monomers.
摘要:
In an embodiment of the invention, aqueous growth medium in a pond can be used to grow algae which can be pumped to a primary dewatering device where the algae can be separated from the harvested growth media based on the flow of the harvested growth media and gravity. The flow through the primary de-watering device can be optimized to maintain log phase growth in the pond, while minimizing the pumping cost and maximizing the concentration of total solids in the primary de-watered algae.
摘要:
A method of coating a substrate surface to improve the visibility of the surface includes the steps of a) applying a first layer of binder to a substrate; b) applying a first layer of optical elements onto the first layer of binder to partially embed the first layer of optical elements into the first layer of binder; c) applying a second layer of binder to cover the first layer of optical elements, wherein the first layer of optical elements defines a plurality of undulations in the second layer of binder; and d) applying a second layer of optical elements onto the second layer of binder to partially embed the second layer of optical elements in the second layer of binder such that the second layer of optical elements has an exposed-lens surface portion and an embedded-lens surface portion.
摘要:
This invention relates to a transition metal catalyst compound represented by the structure: wherein: each X is, independently, a hydride, a halogen, a hydrocarbyl, a substituted hydrocarbyl, a halocarbyl, or a substituted halocarbyl; w is 2; each R1, R2, R3, and R4 is, independently, a hydrogen, a hydrocarbyl, a substituted hydrocarbyl, a halocarbyl, a substituted halocarbyl, a halogen, an alkoxide, a sulfide, an amide, a phosphide, a silyl or another anionic heteroatom-containing group, or independently, may join together to form a C4 to C62 cyclic or polycyclic ring structure; each R5, R6, and R7 is, independently, a hydrogen, a hydrocarbyl, a substituted hydrocarbyl, a halocarbyl, a substituted halocarbyl, a halogen, an alkoxide, a sulfide, an amide, a phosphide, a silyl or another anionic heteroatom-containing group, or independently, may join together to form a C4 to C62 cyclic or polycyclic ring structure; each R8 and R9, is, independently, a hydrogen, a hydrocarbyl, a substituted hydrocarbyl, a halocarbyl, or a substituted halocarbyl, a halogen, an alkoxide, a sulfide, an amide, a phosphide, a silyl or another anionic heteroatom-containing group; R10 is a hydrogen, a hydrocarbyl, a substituted hydrocarbyl, a halocarbyl, or a substituted halocarbyl, a halogen, an alkoxide, a sulfide, an amide, a phosphide, a silyl or another anionic heteroatom-containing group; x is 1, 2, 3 or 4; L is a neutral ligand bonded to M; M is titanium, zirconium or hafnium; and m is 0, 1 or 2.