CN207709021U - A kind of heating device with methanol preparing hydrogen and dimethyl ether air mixture - Google Patents

Abstract

A kind of heating device with methanol preparing hydrogen and dimethyl ether air mixture.Spiral helicine heat-conducting oil heating pipe is made using stainless steel tube, exceptionally floor, middle layer, central core is evenly distributed in catalyst reaction room, and thermal stability, heating time, heating electric work consumption is made all to reduce at double.Make methanol vapor during the reaction uniform and stable due to having installed automatic temperature control additional, the Combination gas of output is 86% or more.The calorific value of fuel gases calorific value burning more direct than methanol improves 3.5 times, has reached energy-efficient.

Description

A kind of heating device with methanol preparing hydrogen and dimethyl ether air mixture

Technical field

The invention belongs to chemical technology field, more particularly to a kind of heating with methanol preparing hydrogen and dimethyl ether air mixture Device.

Background technology

Methanol is one of optimal environment-friendly fuel in current all fuel, because methanol calorific value is low, burn high expensive, So being vaporized to methanol, acquisition hydrogen is reformed in dehydration and dimethyl ether mixing is burnt, its calorific value three times or more can be improved, And meet discharge standard, it is most to clean inexpensive ideal fuels at present.

Due in the reaction process of hydrogen from methyl alcohol, needing to absorb a large amount of thermal energy, so will be to methanol thermal-stable to 240 Degree Celsius, carry out reforming reaction.The heating means taken at present are to use conduction oil interlayer circulating-heating, and exactly catalyst is mounted in It is put into conduction oil and is heated in container.Catalyst container periphery directly heating temperature is higher, and central temperature is low, and catalyst is empty Between uneven heating is even and the heat conduction Chuck Steak that has seriously affected reaction efficiency, and used, increase electrical power needed for heating and The time of heating starting required temperature.

Invention content

Methanol preparing hydrogen and dimethyl ether are used it is an object of the present invention to overcome the shortcomings of the prior art and provide a kind of The heating device of air mixture.

Present invention solves the technical problem that used scheme is：

1, make spiral helicine heating tube with stainless steel tube, be uniformly placed in reaction vessel respectively, by conduction oil plus Hot device and oil circulating pump make high temperature heat conductive oil flow heat dissipation in stainless steel spiral heating tube, ensure that the heating in reaction vessel The rate of climb is fast and is heated evenly, and improves reaction efficiency.

2, automatic control circuit is equipped with to the heat conduction oil temperature in spiral heat-conducting oil heating pipe, temperature, pressure as required Power be controlled automatically at needed within the scope of, ensure that required temperature in reaction vessel is stablized.Reformation hydrogen production reaction temperature is kept At 240-250 degrees Celsius, dewatering preparing dimethy ether reaction temperature is maintained at 280-290 degrees Celsius.

Compared with the prior art, the method have the advantages that：

1, the present invention provides a kind of air mixture heating device with hydrogen from methyl alcohol and dimethyl ether, little power consumption shortens The high-performance device of predetermined heat time.

Original is needed in retort plus 150 kilograms of conduction oil, only with 50 kilograms of conduction oils after improvement.Original is heated to required temperature 30 kilowatts of 240 degrees Celsius of need 8 hours, can reach 240 degrees Celsius of predetermined temperature for 3 hours with 15 kilowatts now.The present invention not only saves It saves power consumption half and saves time half or more.

2, it is heated evenly, reaction efficiency improves

It since helical heating pipe is directly evenly distributed in the reaction vessel, is heated evenly, so by reforming hydrogen originally hundred / tri- ten five or so, now it is increased to 44 or more percent.

3, since heating surface area increases in the reaction vessel, conduction oil cycle is fast, temperature and the reaction compartment temperature of conduction oil It is poor about degree to reduce, exempt from damage of the high temperature to catalyst, ensure that catalyst stability, use can be extended, add primary energy Using 4 years or more, operating cost has been saved.

Description of the drawings

Fig. 1 is a kind of heating device schematic diagram of methanol preparing hydrogen and dimethyl ether air mixture of the present invention.

In figure：1 be reacting tank body 2 be stainless steel conduction oil inner, middle and outer layer helical heating pipe 3 be methanol preparing hydrogen and It is conduction oil output control valve door 6 is conduction oil oil circulating pump that the catalyst 4 of dimethyl ether, which is conduction oil input control valve 5, 7 be heat conduction oil circulation pipe 8 be electric heater for heat conduction oil 9 be conduction oil temperature-controlled cabinet

Specific implementation mode

Automatic constant temperature switch is opened in Fig. 1 conduction oils temperature-controlled cabinet 9 to be powered, and Fig. 1 hotline heaters 8 is made to be heated to When 290 degrees Celsius of predetermined temperature, Fig. 1 conduction oil input controls valve 4, Fig. 1 conduction oil output control valves door 5 are opened, conduction oil Fig. 1 stainless steel conduction oils helical heating pipe 2 is set to start by Fig. 1 conduction oils oil circulating pump 6 by Fig. 1 heat conduction oil circulation pipe 7 To catalyst and space heat elimination.When catalyst reaction space reaches required temperature, 240-250 degrees Celsius of methanol vapor can be automatic Turn on into beginning reforming reaction.When simultaneous reactions space temperature is less than 240 degrees Celsius, controller can be such that electromagnetic valve holds automatically Big flow heat cycles.When to 250 degrees Celsius, controller can make electromagnetic valve reduce heat transfer oil flow automatically automatically, ensure 240-250 degrees Celsius of the temperature of reforming methanol hydrogen manufacturing.

Example preparing hydrogen by reforming methanol outputs test result gas hydrogen content 44.6%.

The methanol vapor after reforming methanol reaction and hydrogen enter upper layer reaction of preparing dimethyl ether from methanol by dehydration container in Fig. 1 Interior, temperature rests in 280-290 degrees Celsius.The course of work is the same with methanol recapitalization production hydrogen program, and the gas finally exported passes through The gas componant of output is tested after cooler, hydrogen 44.6%, dimethyl ether 45.3%, carbon dioxide 12%, remaining is methanol vapor And water.

By example 1kg methanol produce 85-90% hydrogen and dimethyl ether and 10% or so carbon dioxide and fraction Methanol vapor and water.The calorific value that methanol individually burns is 4700 kilocalories, and the hydrogen and dimethyl ether of generation are that heat vale of mixture subtracts loss 10%, i.e. 18600-1860=16740 kilocalories.Hydrogen is made in methanol by process above and DME combustion calorific value can be improved 3.56 again.

Claims (3)

1. a kind of heating device with methanol preparing hydrogen and dimethyl ether air mixture, it is characterised in that：

(1) spiral stainless steel heat-conducting oil heating pipe branch center layer, middle layer, outer layer equably device in retort.

(2) preparing hydrogen by reforming methanol catalyst and the layering addition of preparing dimethyl ether by dewatering methanol catalyst are in stainless steel heat-conducting oil heating pipe Between each layer；

2. the heating device according to claim 1 with methanol preparing hydrogen and dimethyl ether air mixture, it is characterised in that：By Helical form stainless steel heat-conducting oil heating pipe passes through the temperature in reformation hydrogen production reaction zone and reaction of preparing dimethyl ether from methanol by dehydration area certainly Movement controller control is in required temperature, and the control of hydrogen from methyl alcohol temperature is at 240-250 degrees Celsius, preparing dimethyl ether by dewatering methanol temperature control System is at 280-290 degrees Celsius.

3. the heating device according to claim 1 with methanol preparing hydrogen and dimethyl ether air mixture, it is characterised in that：First The volume ratio for the air mixture that the hydrogen and dimethyl ether air mixture that alcohol is produced export after cooler cools down is hydrogen content percent 40-45, percent 38-46 of diformazan ether content, percent 8-12 of carbon dioxide content, remaining is a small amount of methanol gas and water.