Abstract:
The invention relates to a tubular heat exchanger (2) for a device (1) for producing polysilicon. The tubular heat exchanger comprises a first, straight section (10) and a second, straight section (20), both of which are connected to each other by a curved section (6). The tubular heat exchanger (2) is designed to be removable on at least one transition (8) from the curved section (6) to the first straight section (10) or the second straight section (20).
Abstract:
The invention relates to an installation and a method for the production of polycrystalline silicon in a monosilane process. The installation comprises at least one reactor (10), at least one converter (20), at least one injection reservoir (30) and at least one evaporator (40). Every reactor (10) has a feed line (11a) for a fresh gas mixture and a discharge line (41) for the partially consumed gas mixture. Every converter (20) has a feed line (41) for a gas mixture and every evaporator (40) has a discharge line (41) for a gas mixture. The installation further comprises a plurality of sampling elements (7) for test samples in the feed line (11a) and the discharge line (11b) of every reactor (10) and in the discharge line (21) of every converter (20) and the discharge line (41) of every evaporator (40). The sampling elements (7) supply the test samples taken to at least one gas chromatograph (2) via respective lines (8).
Abstract:
The invention relates to a method for applying a silver layer (20) to a surface (10a) of a substrate (10) made of steel and to a reactor (40). The application method comprises the following steps: placing a silver layer (20) on a substrate (10) and thermally bonding the silver layer (20) and the substrate (10). The reactor (40) is used to carry out a defined process and comprises an inner reactor chamber (45) in which a silver layer (20) is fixed to at least a part of the surface (10a) of the substrate (10) by means of thermal bonding (30).
Abstract:
The present invention relates to a recycling system (1) and to a method for operating a recycling system (1). The recycling system (1) consists of a clarification installation (2), which is assigned at least one means (3, 4) for recovering a secondary raw material. It is likewise the case that a control means (10) is assigned to the clarification installation (2) and/or the at least one means (3, 4) for recovering a secondary raw material, and therefore at least some of the secondary raw material can be fed in a controlled manner from the at least one means (3, 4), for energy-recovery purposes, to an energy region (2a) of the clarification installation (2). The clarification installation (2) consists of the energy region (2a), a clarification region (2b) and a ventilation region (2c).
Abstract:
The invention relates to a tubular heat exchanger (2) for a device (1) for producing polysilicon. The tubular heat exchanger comprises a first, straight section (10) and a second, straight section (20), both of which are connected to each other by a curved section (6). The tubular heat exchanger (2) is designed to be removable on at least one transition (8) from the curved section (6) to the first straight section (10) or the second straight section (20).
Abstract:
The invention relates to an installation and a method for the production of polycrystalline silicon in a monosilane process. The installation comprises at least one reactor (10), at least one converter (20), at least one injection reservoir (30) and at least one evaporator (40). Every reactor (10) has a feed line (11a) for a fresh gas mixture and a discharge line (41) for the partially consumed gas mixture. Every converter (20) has a feed line (41) for a gas mixture and every evaporator (40) has a discharge line (41) for a gas mixture. The installation further comprises a plurality of sampling elements (7) for test samples in the feed line (11a) and the discharge line (11b) of every reactor (10) and in the discharge line (21) of every converter (20) and the discharge line (41) of every evaporator (40). The sampling elements (7) supply the test samples taken to at least one gas chromatograph (2) via respective lines (8).