Abstract

A method for removing components to be separated from industrial gases using an absorption and desorption processes having liquid absorbents. At least one absorption device and one desorption device are provided, at least a part of the laden solution leaving the absorption device is diverted before being heated and delivered to the head of the heat transfer section. The laden partial stream is heated by the steam rising from the lower part of the desorption device through heat exchange in the heat transfer section. The remaining stream of cold, laden solution leaving the absorption device is expanded by so the relief valve and the heat exchanger into a pressure relief vessel, such that the stream leaving the heat exchanger separates into a liquid and a gaseous state. The pressure in the pressure relief vessel pressure is lowered so that the total energy demand in absorption and desorption processes is reduced.

IPC Classes  ?

• B01D 53/14 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by absorption
• C01B 3/52 - Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification by contacting with liquidsRegeneration of used liquids
• C10L 3/10 - Working-up natural gas or synthetic natural gas

Abstract

The invention relates to a method for utilization of by-products arising from gasification plants, particularly from a high-temperature Winkler gasifier, wherein the solid material-bearing gas arising during gasification is passed through a centrifugal separator. In the solution proposed by the invention gaseous and/or liquid by-products are not lost from the gasification process, thereby improving the yield of the gasification plant in question. This is achieved in that components not reacted at temperatures of 900°C to 1200°C such as C6H6 or C10H8 (by-products) and hydrogen-based products such as NH3, which are contained in the main gas in addition to products such as CO, H2, CO2, CH4 and H2O, are separated from the main gas products and returned to the gasification process.

IPC Classes  ?

• C10J 3/54 - Gasification of granular or pulverulent fuels by the Winkler technique, i.e. by fluidisation
• C10K 1/04 - Purifying combustible gases containing carbon monoxide by cooling to condense non-gaseous materials

Abstract

The roller mill according to the invention for milling brittle milling material (5) of different grain size has two milling rollers (1, 2), which form a milling gap (3) therebetween, and provides a delivery shaft (4) for feeding the milling material to the milling gap, wherein at least one distributing device (7) is provided in the delivery shaft, which distributing device is arranged above a center area (M) of the milling gap and extends across the milling gap perpendicularly to the longitudinal extension of the milling gap and covers 5 to 70% of the cross-section of the delivery shaft. During the milling of the brittle milling material, the milling material is delivered to the delivery shaft and milled in the milling gap, wherein the milling material is introduced into the delivery shaft or diverted in the delivery shaft in such a way that coarser milling material accumulates in a center area of the milling gap with respect to the longitudinal extension of the milling gap than in the in the edge areas.

IPC Classes  ?

• B02C 4/28 - Crushing or disintegrating by roller mills Details
• B30B 15/30 - Feeding material to presses

Abstract

The invention relates to a system of a burner basket for ammonia oxidation burners for industrial plants with burner diameters of 2-7 m in a natural- or forced-circulation boiler suitable for minimizing gas slip and for minimizing wave formation of means contained in the burner basket, and also for minimizing loss of means contained in the burner basket, wherein the burner basket has a wall (1) that is anchored in the ammonia oxidation burner and the burner basket has a gas-permeable bottom plate (2), which is placed on internal fittings of the forced circulation boiler, wherein the wall (1) and the gas-permeable bottom plate (2) are not mechanically connected to each other, and the wall (3) of the burner basket tapers conically towards the bottom plate at an angle of 5-20° from the perpendicular, and in all operating states of the ammonia oxidation burner there is a peripheral gap in the range from 5 to 10 mm between the wall (1) and the gas-permeable bottom plate (2).

IPC Classes  ?

• C01B 21/28 - Apparatus
• B01J 8/00 - Chemical or physical processes in general, conducted in the presence of fluids and solid particlesApparatus for such processes

Abstract

The invention relates to a sealing system of a burner basket in an ammonia oxidation burner, wherein the burner basket has a wall (1) that is anchored in the ammonia oxidation burner and the burner basket has a gas-permeable bottom plate (2), which is placed on further internal fittings of the ammonia oxidation burner and has a peripheral rim (8) for receiving further means, wherein the wall (1) and the gas-permeable bottom plate (2) are not mechanically connected to each other, and so there is a gap (7) between the wall (1) and the peripheral rim (8) of the bottom plate (2), wherein at the peripheral rim (8) of the bottom plate (2) a rim seal (3) that is made up of individual segments is mounted movably by way of guiding pins (4) and the rim seal (3) projects over the gap (7) between the peripheral rim (8) of the bottom plate (2) to the wall (1) and lies against the wall (1).

IPC Classes  ?

• C01B 21/28 - Apparatus
• B01J 8/00 - Chemical or physical processes in general, conducted in the presence of fluids and solid particlesApparatus for such processes

Abstract

The invention relates to a method and a system for removing carbon dioxide from flue gas (3) emitted by a fossil fuel (2)-operated power plant. In said method and system, carbon dioxide is removed from the flue gas (3) by means of an absorption process (16) using a scrubbing liquid (14). The charged scrubbing liquid (12) is regenerated in a desorption process (11). At least some of the energy required for the regeneration process is fed using low-pressure steam that is withdrawn from the steam-water circuit of the power plant before entering a low-pressure steam turbine (6). The low-pressure steam is fed to an intermediate steam turbine (9). The low-pressure steam is expanded to a discharge pressure of less than 3.5 bar and is then fed to the desorption process (11). According to the invention, the pressure for the desorption process (11) is adjusted by a regulation device in accordance with the discharge pressure from the intermediate steam turbine (9).

IPC Classes  ?

• B01D 53/14 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by absorption

Abstract

The invention relates to a belt-conveying installation (1) for heavy industry, in particular for the extractive or mining industry, comprising at least one carrying structure (2), a conveying belt (3) and at least one drive apparatus (4) for driving the conveying belt (3), wherein the drive apparatus (4) comprises at least one drive shaft (5), at least one drive-shaft-bearing arrangement (5a), at least one drive roller (6) and at least one independently excited drive motor (7) in the form of a frequency-converter-fed alternating-current synchronous motor with a stator (7a) and a rotor (7b). The drive shaft (5) and the at least one drive motor (7) are connected to one another without any gearing, and the rotor (7b) and drive shaft (5) are arranged coaxially, each drive shaft (5) being guided through at least one rotor (7b). The invention also relates to a method for operating such a belt-conveying installation and to the use thereof.

IPC Classes  ?

• B65G 23/22 - Arrangements or mountings of driving motors