Abstract:
The invention relates to a method for producing a heat exchanger. Said method is characterised in that a metal polymer dispersion layer having a halogenated polymer is chemically deposited on a heat exchange surface in a currentless manner. The invention also relates to a method for producing a heat exchanger. Said method is characterised in that a metal phosphor layer having a thickness of 1 to 15 mu m is applied by currentless chemical deposition before the metal polymer dispersion layer is applied. The invention also relates to a heat exchanger which can be produced by an inventive method and to the utilisation of a coating which is produced by currentlessly, chemically depositing a metal polymer dispersion layer having a halogenated polymer in order to make the coated surfaces less likely to accumulate solid materials from fluids whereby deposits are formed.
Abstract:
The invention relates to a method for surface coating of apparatuses or parts of apparatuses used in chemical manufacturing. Walls of apparatuses, walls of containers and walls of reactors, dischargers, fixtures, pumps, filters, compressors, centrifuges, columns, dryers, comminuting machines, internal fittings and combinations are examples for said apparatuses or parts of apparatuses. The inventive method is characterised in that a metal layer or a metal polymer dispersion layer is currentlessly deposited on the apparatus/es or parts of apparatuses to be coated by contacting the parts to a metal electrolytic solution which contains a reduction means and optionally the dispersed polymer or polymer mixture in addition to the metal electrolyte, whereby at least one polymer is halogenated.
Abstract:
The present invention relates to a process for coating apparatuses and apparatus parts for chemical plant construction-which are taken to mean, for example, apparatus, tank and reactor walls, discharge devices, valves, pumps, filters, compressors, centrifuges, columns, dryers, comminution machines, internals, packing elements and mixing elements-wherein a metal layer or a metal/polymer dispersion layer is deposited in an electroless manner on the apparatus(es) or apparatus part(s) to be coated by bringing the parts into contact with a metal electrolyte solution which, in addition to the metal electrolyte, comprises a reducing agent and optionally the polymer or polymer mixture to be deposited in dispersed form, where at least one polymer is halogenated.
Abstract:
Coating an apparatus made from high-grade steel used in a chemical installation comprises pickling surfaces to be coated using an activator heated to 40-85 [deg] C made from a mixture of 10-300 ml hydrochloric or hydrofluoric acid, 1-5 ml sulfuric acid, 1-2 g iron (III) chloride, 6-12 g nickel chloride, 10-20 ml citric acid and water, removing the activator using an inert medium and directly coating the surfaces.
Abstract:
The present invention relates to a process for coating apparatuses and apparatus parts for chemical plant construction-which are taken to mean, for example, apparatus, tank and reactor walls, discharge devices, valves, pumps, filters, compressors, centrifuges, columns, dryers, comminution machines, internals, packing elements and mixing elements-wherein a metal layer or a metal/polymer dispersion layer is deposited in an electroless manner on the apparatus(es) or apparatus part(s) to be coated by bringing the parts into contact with a metal electrolyte solution which, in addition to the metal electrolyte, comprises a reducing agent and optionally the polymer or polymer mixture to be deposited in dispersed form, where at least one polymer is halogenated.
Abstract:
The invention relates to a method for coating a reactor. Said method is characterised in that a metal layer or a metal polymer dispersion layer is deposited on the inner surface of the reactor in a currentless manner by contacting the surfaces to a metal electrolytic solution which contains a reduction means and a halogenated polymer in dispersed form in addition to the metal electrolyte. Said halogenated polymer can optionally be deposited.
Abstract:
The present invention relates to a process for coating apparatuses and apparatus parts for chemical plant construction-which are taken to mean, for example, apparatus, tank and reactor walls, discharge devices, valves, pumps, filters, compressors, centrifuges, columns, dryers, comminution machines, internals, packing elements and mixing elements-wherein a metal layer or a metal/polymer dispersion layer is deposited in an electroless manner on the apparatus(es) or apparatus part(s) to be coated by bringing the parts into contact with a metal electrolyte solution which, in addition to the metal electrolyte, comprises a reducing agent and optionally the polymer or polymer mixture to be deposited in dispersed form, where at least one polymer is halogenated.
Abstract:
The present invention relates to a process for coating apparatuses and apparatus parts for chemical plant construction-which are taken to mean, for example, apparatus, tank and reactor walls, discharge devices, valves, pumps, filters, compressors, centrifuges, columns, dryers, comminution machines, internals, packing elements and mixing elements-wherein a metal layer or a metal/polymer dispersion layer is deposited in an electroless manner on the apparatus(es) or apparatus part(s) to be coated by bringing the parts into contact with a metal electrolyte solution which, in addition to the metal electrolyte, comprises a reducing agent and optionally the polymer or polymer mixture to be deposited in dispersed form, where at least one polymer is halogenated.
Abstract:
The present invention relates to a process for coating apparatuses and apparatus parts for chemical plant construction-which are taken to mean, for example, apparatus, tank and reactor walls, discharge devices, valves, pumps, filters, compressors, centrifuges, columns, dryers, comminution machines, internals, packing elements and mixing elements-wherein a metal layer or a metal/polymer dispersion layer is deposited in an electroless manner on the apparatus(es) or apparatus part(s) to be coated by bringing the parts into contact with a metal electrolyte solution which, in addition to the metal electrolyte, comprises a reducing agent and optionally the polymer or polymer mixture to be deposited in dispersed form, where at least one polymer is halogenated.
Abstract:
Process for coating components comprises electrolytically applying anode spheres to a flexible wire used as the anode. The spheres are made of a material having a high specific electrical resistance which guarantees a predetermined distance of the anode and/or anode spheres from the component to be coated. An Independent claim is also included for electropolishing components comprises applying cathode spheres to a flexible wire used as the cathode. The spheres are made of a material having a high specific electrical resistance which guarantees a predetermined distance of the cathode and/or cathode spheres from the component to be coated. Preferred Features: The anode/cathode moves during the coating or polishing process and touches the component to be processed. In the coating process, an adhesive layer containing nickel is applied followed by a second coating layer made of other materials.