Chemical apparatus and process disinfecting – deodorizing – preser – Chemical reactor – Waste gas purifier
Patent
1997-12-01
1999-09-07
Tran, Hien
Chemical apparatus and process disinfecting, deodorizing, preser
Chemical reactor
Waste gas purifier
422189, 422188, 48128, 261117, B01D 50100, B01D 4706
Patent
active
059483709
DESCRIPTION:
BRIEF SUMMARY
The invention concerns a process and a device for the removal of dust from a gas, that has been produced by low temperature carbonization, in which the solid particles are separated in a washer by means of an addition of recycled of oil that has been produced by low temperature carbonization ("washing oil") and the gases, that have been produced by low temperature carbonization, are cooled.
BACKGROUND OF THE INVENTION
A process is known from EP 0 290 002 A2 for the treatment of a gas, that has been produced by low temperature carbonization, in which the separation of the solids takes place in such a way that the solid particles are intensively wetted by the addition of recycled oil, that contains solids and that has been produced by low temperature carbonization, and they are separated by a washer and, at the same time, cooling of the gases takes place that have been produced by low temperature carbonization.
In the first instance with this process, one obtains an oil, that had been produced by low temperature carbonization, that is free from solids. Extensive removal of dust from the gas, that had been produced by low temperature carbonization, is not possible with this process.
A procedure is known from DD 237 182 A5 for the further processing of a gas that has been produced by low temperature carbonization and that derives from the pyrolysis of waste materials. In this process, the liquid hydrocarbons, that are contained in the gas, are separated completely and, among other tasks, they are used in the form of a so-called "inherent condensate" for the removal of fine dust. The inherent condensate is then fed back into the process for separate usage. The remaining pure gas is capable of being stored and is used for heating, synthetic purposes or for the production of electrical energy.
SUMMARY OF THE INVENTION
The hot gas, that has been produced by low temperature carbonization, is preferably subjected to dust removal in the hot state and is then cooled to approximately 200 to 350.degree. C. with cold "inherent gas" either directly in the form of a quench or indirectly via a heat exchanger.
The gas, that has been produced by low temperature carbonization, that emerges from the pre-cooling stage is subjected to the removal of fine dust in a venturi-type washer together with the feeding in of inherent concentrate. The dedusted (dustfree) gas that emerges from the washer is cooled in a direct cooler in countercurrent by cooled "inherent gas" to a gas temperature of 60 to 120.degree. C., whereby the gas temperature is kept at a value above the dew point of the water being contained in the gas that has been produced by low temperature carbonization. The condensate that result from the gas that has been produced by low temperature carbonization in the venturi washer and in the following direct heat exchanger are fed to a separation container and are separated there into a thick tar and into an oil fraction. The thick tar is returned to the pyrolysis reactor. The oil fraction is used wholly or partially in the form of inherent condensate for the treatment of the gas in the venturi-type washer and in the direct cooler.
The task that forms the basis of the invention is to make available a process, and a device that is suitable in this regard, with which gases, that have been produced by low temperature carbonization, can have dust removed from them to an extent as great as possible.
The invention is based on the fundamental concept of removing dust from gases, that have been produced by low temperature carbonization, by removing the solid particles by spray-washing and condensation in several stages of the process, whereby the condensate that is generated is utilized as the washing oil or, as the case may be, it is reused.
In the process in accordance with the invention, the dustladen gases, that have been produced by low temperature carbonization, are led from a low temperature carbonization oven into the spray washer and are treated there in the counter-flow mode using washing oil as the washing agent. The
REFERENCES:
patent: 1493579 (1924-05-01), Walter
patent: 2747847 (1956-05-01), Otto
patent: 2856171 (1958-10-01), Otto
patent: 2972393 (1961-02-01), Bush
patent: 4039307 (1977-08-01), Bonder
patent: 4211539 (1980-07-01), Bierbach et al.
International Search Report dated Aug. 6, 1996.
International Preliminary Exam Report dated Jun. 17, 1997.
Redepenning Karl-Heinz
Schleiffer Andreas
Uckermann Bernd
Kennedy James
Tran Hien
Veba Oel Technologie und Automatisierung GmbH
LandOfFree
Spray toner for the removal of dust from carbonization gas does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Spray toner for the removal of dust from carbonization gas, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spray toner for the removal of dust from carbonization gas will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1801830