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Process and Apparatus for Producing Methanol ..
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Patents
Publication number CN1847208 A
Publication type Application
Application number CN 200510056689
Publication date Oct 18, 2006
Filing date Apr 14, 2005
Priority date Apr 14, 2005
Also published as CN100596293C
Inventors ,
Applicant
Export Citation BiBTeX, EndNote, RefMan
Referenced by(2),Classifications(3),Legal Events(8)
External Links: SIPO, Espacenet
CLAIMS (5) translated from Chinese
A method of coal, oil, natural gas, coke oven gas and other raw
materials of
methanol and ammonia synthesis classification method and
apparatus,
characterized in that the system containing H2, CO, CO2, N2, CH4
purified to
remove other components of the raw methanol synthesis gas of
harmful
substances, first by the consumption of methanol synthesis gas
for methanol
production part of the raw materials, the production of methanol
remaining after
the methanol synthesis purge gas compressed to a high pressure
for methanol
synthesis, high-pressure purge gas through the methanation of
methanol and
other methods removal of CO, CO2 and other harmful gases go
after ammonia
synthesis ammonia synthesis.
(2) The classification according to claim 1 to produce methanol
and
ammonia synthesis method characterized in that the
low-pressure
methanol synthesis pressure of 4 ~ 9MPa.
3 Classification according to claim 1 to produce methanol and
ammon
synthesis method characterized in that the pressure of
high-pressure
methanol synthesis 10 ~ 32MPa.
4 Classification according to claim 1, the production of
methanol and
ammonia synthesis method characterized in that the methanol
produc
by low-pressure methanol synthesis and methanol production
pressur
ratio greater than 2.
5 classification according to claim 1 to produce methanol and
ammon
synthesis method characterized in that the raw material gas into
the
methanol synthesis CO> 10%.
Material gas stage associating process and
apparatus for producing methanol and
ammoniaCN 1847208 A
ABSTRACT
The present invention is stepped process and apparatus of
synthesizing methanol
and ammonia with coal, petroleum, natural gas, coke oven gas and
other
material. Partial purified material gas is first low pressure
synthesized to produce
methanol, the rest gas is compressed to high pressure for
synthesizing methanol
further, and the high pressure methanol is pressure reduced,
methanated to
eliminate CO, CO2 and other harmful gas and synthesized to
produce ammonia.
The present invention has theadvantages one less investment, low
power
consumption, high yield, etc.
DESCRIPTION translated from Chinese
Grading raw gas of methanol and ammonia co-production method and
apparatus
Technology
The invention belongs to chemical production plants and
equipment, especially
the joint production of methanol and ammonia device,
particularly suitable for
hydrogen, nitrogen, carbon monoxide, carbon dioxide, methanol
and ammonia
synthesis feed gas occasions.
BACKGROUND
Prior to the making of the present invention, the hydrogen,
nitrogen, carbon
monoxide, carbon dioxide feed gas joint production of methanol
and ammonia unit
are the following: First, China began in 1967 to establish a
joint methanol and
ammonia production unit (abbreviated Methanol plant , see
Fengyuan Qi editor of
"linking alcohol production," Chemical Industry Press, 1989)
from the five sections
of the feed gas compressor outlet (pressure 11MPa or so) the
string into the
methanol synthesis unit, and then with liquid copper tower after
the alcohol series
of trace gas carbon monoxide dioxide removal, and then washed
gas into the
compressor sixth copper imports go through compressed to about
32MPa
ammonia synthesis unit, Methanol plant for this original
transformation from
ammonia production unit, which is known as pressure-linked
alcohol. Second,
Hunan Anchun company will subsequently linked alcohol after a
copper wash
methanation method to replace the switch, namely pressure
methanol
methanation, this method is mainly used for ammonia synthesis
feed gas
purification. Third, from a floor equal to 1992 Sou Lam isobaric
invention combined
type methanol and ammonia production unit (Chinese invention
patent
ZL93105920.8) or called high-pressure methanol methanation, the
invention has
been Jiangshan, Linyi, Shanxi Fengxi successful operation of
such plants.
However, although the above-linked alcohol laws have their
technical and
economic advantages, but they are mainly in the production of
synthetic ammonia, methanol production as deputy, although
some methanol production plant close to the actual production of
ammonia, methanol production is greater than in the case
of ammonia methanol synthesis is carried out under high pressure
in the large investment and increases the compression of
electrical energy consumption.
The present invention is in the case of methanol production
increased to provide a reasonable process, energy consumption,
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8/11/2019 Patent CN1847208A - Material Gas Stage Associating
Process and Apparatus for Producing Methanol ..
2/4
8/13/2014 Patent CN1847208A - Material gas stage associating
process and apparatus for producing methanol ... - Google
Patents
http://www.google.com/patents/CN1847208A?cl=en
low cost method of methanol and ammonia production and
cogeneration facilities.
The present invention, the invention is a kind of coal, oil,
natural gas, coke oven gas and other raw materials for synthesis
of
methanol and ammonia classification method and apparatus are
obtained mainly containing H2, CO, CO2, N2, CH4 and other
components by purification to remove harmful substances for
methanol synthesis feed gas, first by methanol synthesis
consumes part of the feed gas to produce methanol, the methanol
production remaining after the methanol synthesis purge
gas compressed to high pressure for methanol synthesis; pressure
methanol purge gas is methane technology and other
methods to remove CO, CO2 and other harmful gases go after
ammonia synthesis ammonia synthesis.
In the classification method for synthesis of methanol and
ammonia, the low pressure methanol synthesis pressure of 4 ~
9MPa.
In the classification method for synthesis of methanol and
ammonia, the pressure of high-pressure methanol synthesis 10 ~
32MPa.
In the classification method for synthesis of methanol and
ammonia, the low pressure methanol synthesis of methanol
produced by the high-pressure methanol production ratio greater
than 2.
In the classification method for synthesis of methanol and
ammonia in methanol into the low pressure in the feed gas
CO>
10%.
BRIEF DESCRIPTION
Further described below in conjunction with the accompanying
drawings of the present invention. In the drawings: Figure 1 is
a coke oven gas or natural gas or oil as a raw material for
synthesis of methanol and ammonia classification methods.
Figure 2 is graded coal as raw materials for synthesis of
methanol and ammonia method.
Figure 3 is a gas coal as raw material often suppress small
ammonia plant into a graded methanol and ammonia synthesis
methods.
Figure 1 is a preferred embodiment of the coke oven gas or
natural gas or oil as the raw material flow diagram embodying
the
present invention, coke oven gas contains about 28% of CH4 and
CmHn, 4 ~ 8% of N2, the rest of H2, CO, CO2, etc., the
pressure is 4 ~ 9MPa, temperature about 900 , the reformer using
steam, and oxygen or oxygen-enriched air or catalyt ic
conversion catalyst, the conversion of CH4 and other H2, CO gas
and other raw materials. For the catalytic conversion of
coke oven gas, you must first desulfurization of non-catalytic
conversion can be converted after the line in fine
desulfurization
catalyst for methanol purification to remove harmful substances.
Oil is used as raw material obtained in pure oxygen
gasification gas also needs fine desulfurization catalyst for
methanol purification to remove harmful substances. Using
natural
gas as raw material, after the first compressed natural gas
desulfurization for steam reforming of natural gas can be
converted
into a period of transformation and Sec stove or autothermal
reforming, the available oxygen can also be enriched, and theninto
the low pressure methanol synthesis loop consumption raw material
gas for methanol synthesis section, and the
remaining methanol purge gas compressed to 10 ~ 32MPa,
successively consumed by high pressure methanol synthesis
CO, CO2 and H2 to methanol, the CO + CO2
