CN203642214U

CN203642214U - Methanol heating device

Info

Publication number: CN203642214U
Application number: CN201320799830.6U
Authority: CN
Inventors: 李飞
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-12-05
Filing date: 2013-12-05
Publication date: 2014-06-11
Anticipated expiration: 2023-12-05

Abstract

The utility model relates to the technical field of chemical engineering and discloses a methanol heating device. The methanol heating device comprises a storage device used for storing and outputting methanol, a gasification device used for gasifying the methanol and a burning device used for gas heating, the storage device, the gasification device and the burning device are communicated sequentially through a main pipeline, the gasification device comprises a reaction tank used for reaction and gasification of the methanol and a heat circulation device, and the heat circulation device is used for heating the reaction tank by burning the methanol gasified by the reaction tank. By the methanol heating device, the reaction tank can provide stable high-pressure high-temperature environment under the condition of heating of the heat circulation device, and the methanol and impurities are gasified into mixed gas to be delivered to the burning device for burning and heating. The mode is low in purity requirement of the methanol, the gasified methanol is high in gas content, formaldehyde gas cannot be generated, and environmental protection is realized.

Description

Methyl alcohol heating plant

Technical field

The utility model relates to the technical field of chemical industry, relates in particular to methyl alcohol heating plant.

Background technology

China is a methanol production big country, and domestic methanol industry exists the problem of production capacity surplus.Show according to statistics, last year, China's methyl alcohol production capacity reached 5149.1 ten thousand tons, 3,129 ten thousand tons of output, and start up load only has 60.8%, and problem of excess production capacity is outstanding.Meanwhile, in part industry, for example, in the production process of chemical plant, chemical fertilizer factory, can produce in a large number the concomitant outputs such as thick alcohol, useless alcohol (methyl alcohol that purity is 55%-75%), the thick alcohol of this class, useless alcohol purity are lower, and cost for purification is high, cannot directly apply.Not in statistics.If the related data of thick alcohol, useless alcohol is added up interior, can reach a conclusion, China's methyl alcohol problem of excess production capacity is protruded at present, and the methyl alcohol thick alcohol that especially purity is not high, useless alcohol cannot make full use of.

On the other hand, modern society's energy and pollution problem are protruded, and methyl alcohol is clean energy resource in theory, if be applied in industrial combustion, can solve the problem of the energy and pollution, solve again methyl alcohol production capacity surplus, the problem that utilization rate is low, provides a kind of clean energy resource of cheapness.

But in fact,, in prior art, the mode of methyl alcohol burning is first to pass through mechanical atomization, then burns, this technology exists a lot of problems: first, because atomizing type causes its incomplete combustion, temperature deficiency while not only burning, and can produce the pernicious gases such as formaldehyde, contaminated environment; Secondly, this application mode can only be used smart alcohol (purity >=95%) as fuel, and smart alcohol price is higher, although low-purity methyl alcohol price is lower, after needing to purify, could use, and cost for purification is very high, there is no use value.How the methyl alcohol of other purity except smart alcohol being applied in industrial combustion, and solving the not enough problem of burning, is a current industrial important technology research direction.

Utility model content

The purpose of this utility model is to provide methyl alcohol heating plant, is intended to solve in prior art methyl alcohol cost in the application of industrial combustion higher, combustion heat supplying deficiency, and the problem of contaminated environment.

The utility model is to realize like this, methyl alcohol heating plant, comprise storage device for storing and export methyl alcohol, for by the gasification installation of methanol gasifying with for the burner of gas heating, between described storage device, gasification installation and burner, be communicated with successively by total pipeline, described gasification installation comprises the retort for reacting gasification of methanol and utilizes the methyl alcohol after the described retort gasification of burning is the thermocirculator of described retort heat supply.

Further, described thermocirculator comprises air inlet pipe, for the heating tank of gas heating be filled with the heat transfer pipe of heating agent, described admission line is communicated on the described total pipeline between described gasification installation and described burner, and described heat transfer pipe twines is located at described retort and described heating tank inwall.

Further, described admission line is connected with outside coal gas interface by external admission line.

Further, on the total pipeline between described gasification installation and described burner, be connected with the protection subtube for be filled with inert gas to described retort.

Further, described storage device comprises storage tank, and described storage tank is provided with the Volatile Gas retracting device of condensation recovery methanol steam.

Further, described gasification installation comprises the relief valve that is arranged in described retort, monitoring form and master control chip for detection of described retort internal pressure and temperature, total pipeline between described storage device and described gasification installation is provided with for controlling the inlet valve of methyl alcohol for amount, and described monitoring form and described inlet valve are electrically connected on described master control chip.

Further, total pipeline between described gasification installation and described burner is provided with combustion gas cooling structure, flow velocity stop valve, flowmeter, subtracts structure of voltage regulation and the two airtight valves for detection of front and back seal, subtracts on the described total pipeline between pressure stabilizing mechanism and described pair of airtight valve described in described admission line is connected to.

Further, described burner is hot-blast stove, Industrial Stoves or Industrial Boiler, in described burner discharge end, is provided with carbon dioxide recovering apparatus.

Further, described carbon dioxide recovering apparatus comprises the heat sink, filter, pressure-swing absorption apparatus and the purifying plant that are sequentially communicated with by recovery channel.

Further, on the described recovery channel of described heat sink front end junction, be connected with the by-pass line for discharging carbon dioxide, described heat sink is provided with the waste heat pipeline for exporting waste heat.。

Compared with prior art, the methyl alcohol heating plant in the utility model, its gasification installation can provide the special condition such as air pressure, temperature, and the methanol gasifying that contains impurity is become to air mixture, is delivered to burner combustion heat supplying.Air mixture due to what burn in burner, atomization methyl alcohol relatively, its burning degree is high, can not produce formaldehyde, and together gasification, and combustion of impurity in methyl alcohol organic matters such as () various alcohol, water, fuel is not limited only to smart alcohol, can do fuel by lower thick alcohol, the useless alcohol of use cost.

Accompanying drawing explanation

The syndeton schematic diagram of the methyl alcohol heating plant that Fig. 1 provides for utility model embodiment;

Fig. 2 is the carbon dioxide recovering apparatus framework schematic diagram in utility model embodiment.

The specific embodiment

In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.

Below in conjunction with concrete accompanying drawing, the realization of the present embodiment is described in detail.

As shown in Figure 1, methyl alcohol heating plant 1, comprises the storage device 11, gasification installation 12 and the burner 13 that are communicated with successively by total pipeline 15.Wherein storage device 11 is for storing and export methyl alcohol, and gasification installation 12 can, by methanol gasifying, then be delivered to burner 13, carries out gas heating.Gasification installation 12 comprises retort 122 and the thermocirculator 121 for reacting gasification of methanol.Methyl alcohol after the gasification that thermocirculator 121 produces by combustion gasification apparatus 12 is retort 122 heat supplies.

In industrial, methyl alcohol enters by total pipeline 15 in the retort 122 of gasification installation 12 from storage device 11, supplying under heat condition of thermocirculator 121, the environment of a HTHP of the interior formation of retort 122, the impurity mixing in methyl alcohol and methyl alcohol is together gasified, form by hydrogen, oxygen, the air mixture of the multiple gases compositions such as gaseous methanol, an air mixture part exports burner 13 to by total pipeline 15, heat supply is carried out in burning, complete from the overall process of methyl alcohol heat supply, another part is delivered in thermocirculator 121, be retort 122 heat supplies by burning, retort 122 continues methyl alcohol reaction gasification.Methyl alcohol heating plant 1 in the present embodiment, by Comprehensive Control such as the temperature to retort 122, pressure, chargings, is air mixture by the methanol conversion that is mixed with impurity, and heat supply is carried out in the air mixture of then burning.With respect to atomization methyl alcohol (liquid methanol granule), the easy completing combustion of mist, can not only provide more heat, can not produce the pernicious gases such as formaldehyde simultaneously.On the other hand, methyl alcohol heating plant 1 in the present embodiment, it is less demanding to methanol purity, not only can adopt smart alcohol, and can adopt thick alcohol, useless alcohol as fuel, react heat supply, not only reduce materials cost, solved China's industrial production methyl alcohol, especially thick alcohol, useless alcohol production capacity surplus, the problem of waste resource simultaneously.

Methyl alcohol heating plant 1 fuel price in the present embodiment is cheap, and combustion product is clean free from environmental pollution, and inner formation for thermal cycle, saves the energy, for environment and energy problem, provides a preferably solution.

As shown in Figure 1, thermocirculator 121 comprises admission line 152, heating tank 1211 and heat supply pipeline 1213.Admission line 152 is communicated on the total pipeline 15 between gasification installation 12 and burner 13.Heat supply pipeline 1213 inside are filled with heating agent, and twine and be located at heating tank 1211 and retort 122 inwalls.

Heating tank 1211 uses the air mixture that retort 122 produces to carry out combustion heat supplying, the heating agent of heating heat supply pipeline 1213 inside, and heating agent transfers heat in retort 122 after flowing, for the gasification heat supply of methyl alcohol, form the complete thermal cycle that supplies, self-sufficient, save the energy.Heat transfer pipe 1213 is also connected with heating agent storage cylinder 1212, and for storing heating agent, heating agent can adopt for example water, wet goods.

Admission line 152 is also communicated with another external admission line 1521, and external admission line 1521 is connected to extraneous coal gas interface.Heating tank 1211 can access extraneous coal gas, before complete equipment not yet brings into operation, carries out cold start-up by the external coal gas that burns, and can open and avoid reaction there is no air mixture before starting, the problem that thermocirculator 121 cannot heat supply.Question response normalization, retort 122 starts, after air mixture that output is enough, to cut off extraneous admission line 152, starts self-centered for thermal response.

On the total pipeline 15 between gasification installation 12 and burner 13, be connected with the protection subtube 153 for be filled with inert gas to retort 122, protection pipeline 153 is provided with monitoring form 124.When retort 122 stops producing, be filled with inert gas, avoid other gases such as oxygen to enter retort 122, the gaseous environment of inside when impact production next time.Protect reaction unit retort 122 on the one hand, reduced as far as possible on the other hand the impact of environment on methanol gasifying.

As shown in Figure 1, storage device 11 comprises storage tank 111, and storage tank 111 is provided with Volatile Gas recovery structure 1111 and ultrasonic solution bit architecture 112.Methyl alcohol liquid level in storage tank 111 in order to keep pressure in tank, need to be reserved air inlet after declining.And the part of leaving a blank in tank may some methanol steam, this part methanol steam may give out from air inlet, not only cause wastage of material, and may cause security incident, the Volatile Gas recovery structure 1111 arranging on storage tank 111 in the present embodiment, with condensation function, can be realized the function of air inlet, in the time that methanol steam passes through, can cooling be condensed into liquid methanol, flow back in storage tank 111.Ultrasonic solution bit architecture 112 can be surveyed the liquid level position of storage tank 111 inside, is convenient to estimate clout amount.。On the total pipeline 151 of storage device 11 outputs, be also provided with pre-processing structure 113, methanol feedstock is carried out to preliminary pretreatment, be convenient to follow-up processing.

As shown in Figure 1, gasification installation 122 comprises the relief valve 125 that is arranged in retort 122 and monitoring form 124 and master control chip for detection of internal pressure and temperature, and the total pipeline 15 between storage device 11 and gasification installation 12 is provided with for controlling the inlet valve 151 of methyl alcohol for amount.Monitoring form 124 can be monitored pressure and the temperature of retort 122 inside at any time, then regulate heat supply and the inlet valve 151 of thermocirculator 121, coordinate relief valve 125 to keep retort 122 withins in best physical and chemical reaction environment, stable is air mixture by methanol conversion again.Control procedure can be utilized manual monitoring, also can, by setting in advance master control chip internal software, carry out Automatic Control, makes the automation more of whole methyl alcohol heating plant 1.

On the total pipeline 15 between gasification installation 12 and burner 13, be provided with combustion gas cooling structure 1231, flow velocity stop valve 1232, flowmeter 1233, subtract structure of voltage regulation 1234 and the two airtight valves 131 for detection of front and back seal, admission line 152 is connected on the total pipeline 15 subtracting between pressure stabilizing mechanism 1234 and two airtight valve 131.Export from gasification installation 12 in air mixture, before entering burner, through the cooling of combustion gas cooling structure 1231 with subtract the decompression of structure of voltage regulation 1234, make it in compared with the environment of stability and safety, flowmeter 1233 can detect the flow of air mixture, coordinate inlet valve 151, can monitor actual inlet amount and the quantum of output of methyl alcohol.The effect of flow velocity stop valve 1232 is the automatic cut-offs when too fast of the air mixture flow velocity when process, continues gas transmission to have avoided position to occur damaged, causes security incident.Two airtight valves 131 can detect valve seal before startup, in the situation that having determined that gas leakage does not all occur for gasification installation 12 and burner 13, just open-minded, allow air mixture to pass through, enter burner 13, maltilevel security detection architecture provides safe environment for use for burning situation.

Before burner 13 in this enforcement, be also provided with secondary flame monitoring apparatus 132, when the process of combustion of burner 13 starts, after two airtight valve 131 property tests are passed through, while entering ignition procedure, in secondary flame monitoring apparatus 132 for the first time, to whether ignition flame be formed and be detected with the red detection mode of ultraviolet, after detecting that flame forms, enter little fiery program and carry out flame ion detection for the second time simultaneously, after secondary detection is all passed through, burner 13 enters automatic running status according to workload demand, secondary flame monitoring apparatus 132 (ultraviolet ray and flame ionization monitoring), ensure greatly safety in operation, process of combustion controller by PLC and program curing completes jointly.

Burner 13 is hot-blast stove, Industrial Stoves or Industrial Boiler, in the discharge end of burner 13, is provided with carbon dioxide recovering apparatus 14.These three kinds of stoves are burning energy-dissipating device common in prior art, and through actual experiment and detection, the temperature of air mixture can exceed 1500 ℃ (1300), can meet most industrial combustion energy supply needs.The carbon dioxide recovering apparatus 14 arranging in the discharge section of burner 13, can reclaim tail gas, energy-saving and emission-reduction.

As shown in Figure 2, the carbon dioxide recovering apparatus 14 in the present embodiment comprises the heat sink 141, filter 142, pressure-swing absorption apparatus 143, the purifying plant 144 that are communicated with by recovery channel 154 successively.The carbon dioxide of discharging from burner 13 is after cooling, filtration, pressure-variable adsorption impurity, purification, purity can reach food-grade (purity >=98%), the carbon dioxide of food-grade can be used as the raw material of industry and stores sale, be applied in the industries such as carbonated drink, reduce discharge, increased profit simultaneously.

On the recovery channel 154 of heat sink 141 front end junctions, be connected with the by-pass line 1541 for discharging carbon dioxide, heat sink 141 is provided with the waste heat pipeline 1542 for exporting waste heat.Because the carbon dioxide temperature of discharging from burner 13 is higher, in cooling, can discharge a large amount of heats, waste heat pipeline 1542 can export this part heat to the part that other need heat supply, other places of for example heat-supplying circulation device 121 or factory, fully recycle waste heat.

Methyl alcohol heating plant 1 in the present embodiment, by controlling the physico chemical factor of retort 122 inside, is air mixture by methyl alcohol and impurity gasification, burn, its burning degree is high, and heating effect is good, cost is low, has solved China's methyl alcohol production capacity surplus, the useless alcohol of thick alcohol utilizes the problems such as degree is low simultaneously.It is inner by air mixture heat supply, self-sufficient, under the control of master control chip, can automatically complete gasification.Finally discharge carbon dioxide and produce and become food-grade carbon-dioxide after reclaiming, turn waste into wealth, reduced discharge and improved profit, the process of recovery can also reclaim a part of waste heat.Whole methyl alcohol heating plant 1 environmental protection and energy saving, cost is low, and efficiency is high, in the modern times that day by day highlight, has positive Practical significance in environmental energy problem.

The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.

Claims

1. methyl alcohol heating plant, it is characterized in that, comprise storage device for storing and export methyl alcohol, for by the gasification installation of methanol gasifying with for the burner of gas heating, between described storage device, gasification installation and burner, be communicated with successively by total pipeline, described gasification installation comprises the retort for reacting gasification of methanol and utilizes the methyl alcohol after the described retort gasification of burning is the thermocirculator of described retort heat supply.

2. methyl alcohol heating plant as claimed in claim 1, it is characterized in that, described thermocirculator comprises air inlet pipe, for the heating tank of gas heating be filled with the heat transfer pipe of heating agent, described admission line is communicated on the described total pipeline between described gasification installation and described burner, and described heat transfer pipe twines is located at described retort and described heating tank inwall.

3. methyl alcohol heating plant as claimed in claim 2, is characterized in that, described admission line is connected with outside coal gas interface by external admission line.

4. methyl alcohol heating plant as claimed in claim 1, is characterized in that, on the total pipeline between described gasification installation and described burner, is connected with the protection subtube for be filled with inert gas to described retort.

5. methyl alcohol heating plant as claimed in claim 1, is characterized in that, described storage device comprises storage tank, and described storage tank is provided with the Volatile Gas retracting device of condensation recovery methanol steam.

6. methyl alcohol heating plant as claimed in claim 1, it is characterized in that, described gasification installation comprises the relief valve that is arranged in described retort, monitoring form and master control chip for detection of described retort internal pressure and temperature, total pipeline between described storage device and described gasification installation is provided with for controlling the inlet valve of methyl alcohol for amount, and described monitoring form and described inlet valve are electrically connected on described master control chip.

7. methyl alcohol heating plant as claimed in claim 2, it is characterized in that, total pipeline between described gasification installation and described burner is provided with combustion gas cooling structure, flow velocity stop valve, flowmeter, subtracts structure of voltage regulation and the two airtight valves for detection of front and back seal, subtracts on the described total pipeline between pressure stabilizing mechanism and described pair of airtight valve described in described admission line is connected to.

8. methyl alcohol heating plant as claimed in claim 1, is characterized in that, described burner is hot-blast stove, Industrial Stoves or Industrial Boiler, in described burner discharge end, is provided with carbon dioxide recovering apparatus.

9. methyl alcohol heating plant as claimed in claim 8, is characterized in that, described carbon dioxide recovering apparatus comprises the heat sink, filter, pressure-swing absorption apparatus and the purifying plant that are sequentially communicated with by recovery channel.

10. methyl alcohol heating plant as claimed in claim 9, is characterized in that, on the described recovery channel of described heat sink front end junction, is connected with the by-pass line for discharging carbon dioxide, and described heat sink is provided with the waste heat pipeline for exporting waste heat.