CN115337749A - Methanol reservoir area and methanol loading VOCs gas treatment system - Google Patents
Methanol reservoir area and methanol loading VOCs gas treatment system Download PDFInfo
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- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 title claims abstract description 261
- 239000012855 volatile organic compound Substances 0.000 title claims abstract description 17
- 239000007789 gas Substances 0.000 claims abstract description 121
- 238000003860 storage Methods 0.000 claims abstract description 41
- 238000010438 heat treatment Methods 0.000 claims abstract description 38
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 33
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 20
- 238000009826 distribution Methods 0.000 claims abstract description 15
- 239000012071 phase Substances 0.000 claims abstract description 14
- 239000000571 coke Substances 0.000 claims abstract description 12
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 10
- 239000007791 liquid phase Substances 0.000 claims abstract description 5
- 239000007788 liquid Substances 0.000 claims description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 238000010521 absorption reaction Methods 0.000 claims description 9
- 238000000746 purification Methods 0.000 claims description 8
- 238000005070 sampling Methods 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 239000002351 wastewater Substances 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims 2
- 230000001502 supplementing effect Effects 0.000 claims 2
- 230000000737 periodic effect Effects 0.000 claims 1
- 238000005086 pumping Methods 0.000 claims 1
- 238000005406 washing Methods 0.000 claims 1
- 238000000034 method Methods 0.000 description 5
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 4
- 239000003546 flue gas Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 238000010025 steaming Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000029058 respiratory gaseous exchange Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D7/00—Forming, maintaining or circulating atmospheres in heating chambers
- F27D7/02—Supplying steam, vapour, gases or liquids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/005—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by heat treatment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/1412—Controlling the absorption process
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/1487—Removing organic compounds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/1493—Selection of liquid materials for use as absorbents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/18—Absorbing units; Liquid distributors therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/708—Volatile organic compounds V.O.C.'s
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
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Abstract
Description
技术领域technical field
本发明涉及化工气体处理技术领域，尤其涉及甲醇库区、甲醇装车VOCs气体处理系统。The invention relates to the technical field of chemical gas treatment, in particular to a methanol storage area and a methanol-loaded VOCs gas treatment system.
背景技术Background technique
甲醇贮槽为内浮顶式贮槽，甲醇库区设置氮封，当压力超过1.6KPa呼吸阀打开，含醇尾气排放到空气中；装车台为上装式结构，装车过程中含醇尾气通过人孔逸散到空气中。甲醇尾气逸散到空气中，既造成资源浪费，又影响生产环境，同时增加生产区域不安全因素。目前，我公司甲醇库区有5000m3精甲醇储罐两台，168m3精甲醇计量槽两座、168m3杂醇槽一座、480m3粗醇槽一座、5m³地下槽一座。甲醇装车台有4个装车车位，每个装车车位均为上装式结构，甲醇贮槽设置有氮封，压力超过1.6KPa，呼吸阀打开，甲醇尾气排放到大气中；甲醇装车为上装式结构，通过上部人孔装入，装车过程中部分尾气经过人孔逸散到空气中，两个区域VOCs尾气成分基本相同，均为含醇尾气，含醇尾气无组织排放到空气中去，浪费资源，影响环境，安全风险增加。The methanol storage tank is an internal floating roof storage tank, and the methanol storage area is equipped with a nitrogen seal. When the pressure exceeds 1.6KPa, the breathing valve opens, and the exhaust gas containing alcohol is discharged into the air; the loading platform is a top-mounted structure, and the exhaust gas containing alcohol during the loading process Escaping into the air through manholes. Methanol tail gas escapes into the air, which not only causes waste of resources, but also affects the production environment, and at the same time increases unsafe factors in the production area. At present, our company's methanol storage area has two 5000m 3 refined methanol storage tanks, two 168m 3 refined methanol metering tanks, one 168m 3 fusel alcohol tank, one 480m 3 crude alcohol tank, and one 5m³ underground tank. The methanol loading platform has 4 loading spaces, each of which is a top-mounted structure, the methanol storage tank is equipped with a nitrogen seal, the pressure exceeds 1.6KPa, the breathing valve is opened, and the methanol tail gas is discharged into the atmosphere; methanol loading is The top-mounted structure is loaded through the upper manhole. During the loading process, part of the exhaust gas escapes into the air through the manhole. The components of the VOCs exhaust gas in the two areas are basically the same. Go, waste resources, affect the environment, and increase safety risks.
发明内容Contents of the invention
本发明的目的是为了解决现有技术中的问题，而提出的甲醇库区、甲醇装车VOCs气体处理系统。The purpose of the present invention is to solve the problems in the prior art, and proposed methanol storage area, methanol loading VOCs gas treatment system.
为了实现上述目的，本发明采用了如下技术方案：In order to achieve the above object, the present invention adopts the following technical solutions:
甲醇库区、甲醇装车VOCs气体处理系统，包括：Methanol storage area, methanol loading VOCs gas treatment system, including:
甲醇库区设置有储罐，储罐顶部依次设置有氮封设施、尾气收集管道、单呼阀、阻火器，阻火器前后设置有手动阀门；The methanol storage area is equipped with storage tanks, and the top of the storage tanks is equipped with nitrogen sealing facilities, exhaust gas collection pipes, single exhalation valves, flame arresters, and manual valves before and after the flame arresters;
粗醇地下槽进口上部设置氮封阀阀组、安全阀，粗醇地下槽出口上部设置单向阀、阻火器，阻火器前后设置手动阀门；The upper part of the crude alcohol underground tank inlet is equipped with a nitrogen sealing valve valve group and a safety valve, and the upper part of the crude alcohol underground tank outlet is equipped with a one-way valve and a flame arrester, and manual valves are installed before and after the flame arrester;
尾气处理设施前设置有风机、阻火器、手动阀门，尾气处理设施后设置有在线醇含量分析仪、切断阀、放空阀；Fans, flame arresters, and manual valves are installed in front of the exhaust gas treatment facilities, and online alcohol content analyzers, shut-off valves, and vent valves are installed behind the exhaust gas treatment facilities;
甲醇装车的装车设施包括上装设施以及增设在上装设施后侧的液下装车设施，实现上装与下装可以随时切换，（液相+气相）装车鹤管采用成套万向节充装；The loading facilities for methanol loading include top loading facilities and additional submerged loading facilities at the back of the top loading facilities, so that top loading and bottom loading can be switched at any time, and (liquid phase + gas phase) loading crane pipes are filled with a complete set of universal joints ;
对甲醇库区和甲醇装卸车的尾气进行收集，甲醇装车、甲醇库区尾气在增压风机的作用下进入尾气吸收塔，利用甲醇溶于水的原理，使用除盐水对甲醇进行洗涤吸收，甲醇尾气自尾气吸收塔下部进入，上部排出，循环水自上而下，逆向接触，充分吸收甲醇，富液定期排放到粗醇地下槽中，通过液位控制液体排放；净化处理后用于煤气加热炉配风，当加热炉风机急停时联锁停止新增风机，并切断该系统，全开新增风机吸风口，利用新增风机吸风口临时排气；Collect the exhaust gas from the methanol storage area and methanol loading and unloading trucks. The exhaust gas from methanol loading and methanol storage areas enters the exhaust gas absorption tower under the action of a booster fan. Using the principle that methanol dissolves in water, methanol is washed and absorbed with desalinated water. Methanol tail gas enters from the lower part of the tail gas absorption tower and is discharged from the upper part. The circulating water is in reverse contact from top to bottom to fully absorb methanol, and the rich liquid is regularly discharged into the crude alcohol underground tank, and the liquid discharge is controlled by the liquid level; after purification, it is used for gas The heating furnace air distribution, when the heating furnace fan stops suddenly, the interlock stops the new fan, and cuts off the system, fully opens the suction port of the new fan, and uses the suction port of the new fan to temporarily exhaust;
装车设施设置有气相鹤管和阻火器，装车气相自鹤管进入引风机入口，通过风机入口压力联锁控制风机变频，经风机增压后送至尾气净化设施处理后送至焦炉气加热炉、综合加热炉配风；The loading facility is equipped with a gas phase crane tube and a flame arrester. The loading gas phase enters the inlet of the induced draft fan from the crane tube, and the frequency conversion of the fan is controlled by the fan inlet pressure interlock. Air distribution for heating furnace and comprehensive heating furnace;
尾气处理设施的废水经泵增压后送至粗醇地下槽；尾气处理塔上设置有液位计（保持液位高度在80%）、取样点（每班取样一次），取样结果甲醇含量达到20%，液体经粗醇泵送至粗醇地下槽；尾气处理塔液位降至20%时停止输送，并进行脱盐水补给，尾气处理塔液位高度补给至80%停止补给，起到定期置换作用；The waste water from the tail gas treatment facility is pumped and sent to the crude alcohol underground tank; the tail gas treatment tower is equipped with a liquid level gauge (to keep the liquid level at 80%) and a sampling point (sampled once per shift), and the methanol content of the sampling result reaches 20%, the liquid is pumped to the crude alcohol underground tank through the crude alcohol; when the liquid level of the tail gas treatment tower drops to 20%, the transportation is stopped, and desalinated water is replenished, and the liquid level of the tail gas treatment tower is replenished to 80%. Displacement;
甲醇库区、甲醇装卸车的尾气回收处理后，在送焦炉气加热炉配风前经甲醇在线分析仪分析，分析处理后尾气必须达到非甲烷总烃≤120mg/m3,甲醇≤50mg/m3标准，一旦测出尾气甲醇含量超标时（甲醇含量大于25%LEL）立即连锁关闭切断阀，阻止不合格尾气排向加热炉。After recovery and treatment of the tail gas from the methanol storage area and methanol loading and unloading trucks, it is analyzed by the online methanol analyzer before being sent to the coke oven gas heating furnace for air distribution. Standard, once the methanol content in the tail gas exceeds the standard (methanol content is greater than 25% LEL), immediately close the shut-off valve in chains to prevent the unqualified tail gas from being discharged to the heating furnace.
优选的，所述储罐内压力达到0.9kpa时，单呼阀开启尾气送至引风机入口，和装车尾气一同经风机增压送至尾气净化设施处理后再送至煤气加热炉配风。Preferably, when the internal pressure of the storage tank reaches 0.9kpa, the single exhalation valve is opened and the exhaust gas is sent to the inlet of the induced draft fan, and together with the vehicle loading exhaust gas, it is pressurized by the fan and sent to the exhaust gas purification facility for treatment, and then sent to the gas heating furnace for air distribution.
优选的，所述粗醇地下槽出口上部设置的阻火器在5m内。Preferably, the flame arrester set above the outlet of the crude alcohol underground tank is within 5m.
优选的，所述综合加热炉为低烧式方箱炉，产生的高温烟气由加热炉上部辐射室烟道进入对流段，通过蒸焦加热段、蒸汽过热段、蒸焦预热段、空气预热段后将烟气由烟囱排空。Preferably, the comprehensive heating furnace is a low-fired square box furnace, and the high-temperature flue gas generated enters the convection section from the flue of the radiation chamber at the upper part of the heating furnace, and passes through the coke steaming heating section, steam superheating section, coke steaming preheating section, air preheating section After the heating section, the flue gas is evacuated from the chimney.
本发明的有益效果为：The beneficial effects of the present invention are:
1.甲醇贮槽超压放散、甲醇装车逸散到空气中的尾气，影响生产区域安全和VOCs的治理，尾气组成及性质基本相同，结合甲醇区域生产特点，以就近处理、减少投资、合理利用为原则，通过增设设备、管道等设施，配套电气仪表等设施，尾气收集净化处理后送至综合加热炉、焦炉气加热炉配风，尾气在高温条件下裂解，实现VOCs达标排放。1. The overpressure release of methanol storage tanks and the exhaust gas released into the air by methanol loading affect the safety of the production area and the treatment of VOCs. The composition and properties of the exhaust gas are basically the same. Combined with the characteristics of methanol regional production, it can be treated nearby, reducing investment and reasonable Based on the principle of utilization, by adding equipment, pipelines and other facilities, supporting electrical instruments and other facilities, the tail gas is collected and purified and sent to the comprehensive heating furnace and coke oven gas heating furnace for air distribution. The tail gas is cracked under high temperature conditions to achieve VOCs emission standards.
2.分散设置各个排放点，压力不同，根据各个区域尾气组成、压力及性质的特点，分区域就近处理，回收有价值成分，实现无排放点。2. Separately set up various discharge points with different pressures. According to the characteristics of the composition, pressure and nature of the exhaust gas in each area, the nearby processing is carried out in different areas, and valuable components are recovered to achieve no discharge points.
附图说明Description of drawings
图1为本发明提出的甲醇库区、甲醇装车VOCs气体处理系统的处理流程示意图；Fig. 1 is the schematic diagram of the treatment process of the methanol storage area and methanol loading VOCs gas treatment system proposed by the present invention;
图2为本发明提出的甲醇库区、甲醇装车VOCs气体处理系统的粗醇地下槽示意图。Fig. 2 is a schematic diagram of the crude alcohol underground tank of the methanol storage area and the methanol-loaded VOCs gas treatment system proposed by the present invention.
图中：1、增压风机；2、尾气吸收塔；3、综合加热炉；4、粗醇地下槽。In the figure: 1. Booster fan; 2. Tail gas absorption tower; 3. Comprehensive heating furnace; 4. Crude alcohol underground tank.
具体实施方式Detailed ways
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.
需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。下面将参考附图并结合实施例来详细说明本发明。It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.
参照图1-2，甲醇库区、甲醇装车VOCs气体处理系统，包括：Referring to Figure 1-2, methanol storage area, methanol loading VOCs gas treatment system, including:
甲醇库区设置有储罐，储罐顶部依次设置有氮封设施、尾气收集管道、单呼阀、阻火器，阻火器前后设置有手动阀门；The methanol storage area is equipped with storage tanks, and the top of the storage tanks is equipped with nitrogen sealing facilities, exhaust gas collection pipes, single exhalation valves, flame arresters, and manual valves before and after the flame arresters;
粗醇地下槽4进口上部设置氮封阀阀组、安全阀，粗醇地下槽4出口上部设置单向阀、阻火器，阻火器前后设置手动阀门；The upper part of the crude alcohol underground tank 4 inlet is equipped with a nitrogen sealing valve valve group and a safety valve, and the upper part of the crude alcohol underground tank 4 outlet is equipped with a one-way valve and a flame arrester, and manual valves are installed before and after the flame arrester;
尾气处理设施前设置有风机、阻火器、手动阀门，尾气处理设施后设置有在线醇含量分析仪、切断阀、放空阀；Fans, flame arresters, and manual valves are installed in front of the exhaust gas treatment facilities, and online alcohol content analyzers, shut-off valves, and vent valves are installed behind the exhaust gas treatment facilities;
甲醇装车的装车设施包括上装设施以及增设在上装设施后侧的液下装车设施，实现上装与下装可以随时切换，（液相+气相）装车鹤管采用成套万向节充装；The loading facilities for methanol loading include top loading facilities and additional submerged loading facilities at the back of the top loading facilities, so that top loading and bottom loading can be switched at any time, and (liquid phase + gas phase) loading crane pipes are filled with a complete set of universal joints ;
对甲醇库区和甲醇装卸车的尾气进行收集，甲醇装车、甲醇库区尾气在增压风机1的作用下进入尾气吸收塔2，利用甲醇溶于水的原理，使用除盐水对甲醇进行洗涤吸收，甲醇尾气自尾气吸收塔2下部进入，上部排出，循环水自上而下，逆向接触，充分吸收甲醇，富液定期排放到粗醇地下槽4中，通过液位控制液体排放；净化处理后用于煤气加热炉配风，当加热炉风机急停时联锁停止新增风机，并切断该系统，全开新增风机吸风口，利用新增风机吸风口临时排气；Collect the exhaust gas from the methanol storage area and methanol loading and unloading trucks. The exhaust gas from the methanol loading and methanol storage area enters the exhaust gas absorption tower 2 under the action of the
装车设施设置有气相鹤管和阻火器，装车气相自鹤管进入引风机入口，通过风机入口压力联锁控制风机变频，经风机增压后送至尾气净化设施处理后送至焦炉气加热炉、综合加热炉3配风；The loading facility is equipped with a gas phase crane tube and a flame arrester. The loading gas phase enters the inlet of the induced draft fan from the crane tube, and the frequency conversion of the fan is controlled by the fan inlet pressure interlock. 3 air distribution for heating furnace and comprehensive heating furnace;
尾气处理设施的废水经泵增压后送至粗醇地下槽4；尾气处理塔上设置有液位计（保持液位高度在80%）、取样点（每班取样一次），取样结果甲醇含量达到20%，液体经粗醇泵送至粗醇地下槽4；尾气处理塔液位降至20%时停止输送，并进行脱盐水补给，尾气处理塔液位高度补给至80%停止补给，起到定期置换作用；The waste water from the tail gas treatment facility is pumped and sent to the crude alcohol underground tank 4; the tail gas treatment tower is equipped with a liquid level gauge (to keep the liquid level at 80%) and sampling points (sampling once per shift), and the methanol content of the sampling results When the liquid level reaches 20%, the liquid is pumped to the crude alcohol underground tank 4 through the crude alcohol; when the liquid level of the tail gas treatment tower drops to 20%, the transportation is stopped, and desalinated water is replenished, and the liquid level of the tail gas treatment tower is replenished to 80%. to regular replacement;
甲醇库区、甲醇装卸车的尾气回收处理后，在送焦炉气加热炉配风前经甲醇在线分析仪分析，分析处理后尾气必须达到非甲烷总烃≤120mg/m3,甲醇≤50mg/m3标准，一旦测出尾气甲醇含量超标时（甲醇含量大于25%LEL）立即连锁关闭切断阀，阻止不合格尾气排向加热炉。After recovery and treatment of the tail gas from the methanol storage area and methanol loading and unloading trucks, it is analyzed by the online methanol analyzer before being sent to the coke oven gas heating furnace for air distribution. Standard, once the methanol content in the tail gas exceeds the standard (methanol content is greater than 25% LEL), immediately close the shut-off valve in chains to prevent the unqualified tail gas from being discharged to the heating furnace.
在具体实施方式中，储罐内压力达到0.9kpa时，单呼阀开启尾气送至引风机入口，和装车尾气一同经风机增压送至尾气净化设施处理后再送至煤气加热炉配风。In a specific embodiment, when the internal pressure of the storage tank reaches 0.9kpa, the single exhalation valve opens and the exhaust gas is sent to the inlet of the induced draft fan, and together with the vehicle loading exhaust gas, it is pressurized by the fan and sent to the exhaust gas purification facility for treatment, and then sent to the gas heating furnace for air distribution.
在具体实施方式中，粗醇地下槽4出口上部设置的阻火器在5m内。In a specific embodiment, the flame arrester set on the upper part of the outlet of the crude alcohol underground tank 4 is within 5m.
在具体实施方式中，综合加热炉3为低烧式方箱炉，产生的高温烟气由加热炉上部辐射室烟道进入对流段，通过蒸焦加热段、蒸汽过热段、蒸焦预热段、空气预热段后将烟气由烟囱排空。In a specific embodiment, the comprehensive heating furnace 3 is a low-fired square box furnace, and the high-temperature flue gas produced enters the convection section from the flue of the radiation chamber at the upper part of the heating furnace, and passes through the coke steaming heating section, steam superheating section, coke steaming preheating section, After the air preheating section, the flue gas is evacuated from the chimney.
我公司经过技术交流、实地考察，结合公司实际情况，采取上述处理办法：含甲醇尾气（库区、装卸车）收集、净化处理后用于煤气加热炉配风，当加热炉风机急停时利用风机吸风口临时排气。甲醇装车新增装车设施，（液相+气相）装车鹤管采用成套万向节充装。装车设施设有气相鹤管及阻火器，装车气相自鹤管进入引风机入口，通过风机入口压力联锁控制风机变频，经风机增压后送至尾气净化设施处理后送至综合加热炉3配风。此部分尾气净化后引入综合加热炉3、焦炉气加热炉焚烧，在高温条件下裂解，实现VOCs达标排放。After technical exchanges, on-the-spot investigations, and combined with the actual situation of the company, our company adopts the above-mentioned treatment methods: methanol-containing tail gas (storage area, loading and unloading truck) is collected and purified and used for air distribution in the gas heating furnace. When the heating furnace fan stops suddenly, it is used Temporary exhaust from the fan suction port. New loading facilities are added for methanol loading, and (liquid phase + gas phase) loading crane pipes are filled with a complete set of universal joints. The loading facility is equipped with a gas phase crane tube and a flame arrester. The loading gas phase enters the inlet of the induced draft fan from the crane tube, and the frequency conversion of the fan is controlled by the fan inlet pressure interlock. After being pressurized by the fan, it is sent to the exhaust gas purification facility for treatment and then sent to the comprehensive heating furnace 3 with wind. This part of the tail gas is purified and then introduced into the comprehensive heating furnace 3. The coke oven gas heating furnace is incinerated and cracked under high temperature conditions to achieve the discharge of VOCs up to the standard.
以上所述仅为本发明的优选实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.
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