Investment in dimethyl ether equipment

I went out for research some time ago and happened to mention this to the design institute. The investment for 50,000 tons is about 20 million, and the area is not large, about 2 acres. 100,000 tons will be doubled on this basis. The equipment is very simple, and the tank mainly occupies an area.

The last time I negotiated with Southwest Hospital, the price quoted was much higher.

have a look http://bbs.hcbbs.com/thread-38345-1-1.html , maybe more detailed.

200,000 tons, a little more than 50 million

It is best to communicate with the design unit about the actual situation.

I just made a rough estimate of the new purchase. The construction investment of the 400,000-ton DME device itself is about 115 million yuan. As of February 2008, for your reference.

Haha, the process equipment requirements for dehydrating methanol to make dimethyl ether may not be very high, but how many days should the raw materials be stored, how many days should the products be stored, and how the raw materials and products are transported, that is, whether there is a railway, and whether it is completely transported by road tanker. You can roughly calculate the amount of transportation required every day, how many tons per tanker, and whether HDD or buried pipes are required for rail transportation outside the factory or tank area. What is the safe fire separation distance for such a large tank farm, and what is the distance between loading and unloading truck facilities. Just how large the safety distance between a methanol tank farm and a dimethyl ether tank farm needs to be, plus the safety distance between loading and unloading truck facilities, and the space required for vehicle loading and unloading. Not to mention whether fire pools, accident water treatment pools, and torch systems are needed (whether they are needed still needs to be discussed), these may be much larger than the so-called device itself. It is unsafe to build a factory with a village outside it, but how many small and medium-sized factories do we have built like this? If you add the project approval fee, design fee, catalyst fee, project direct cost, and project management cost, you don’t know how the above price is calculated. In addition, product specifications, * * There seems to be a standard now. Can any technical staff from any manufacturer really tell me whether the specifications of dimethyl ether that have been put into production can reach 99%? Not even talking about 99.9% level. How to carry out the project? If the project site is flat, whether the quality of the backfill soil, moisture content and other data, compaction rate, etc. should be checked regularly. Sampling inspection is required. If you just fill it with cobblestones, how much difference can there be in the cost? If we do this, the project cost will be reduced. Is this a project? The things mentioned above actually happened, and it is this type of project. I posted a lot of complaints. I'm sorry. The main reason is that I raised a few practical questions and no one answered them. It may be true that there is none, or the scale may be falsely reported. well. I have a suggested question for the poster. You want to produce 100,000 tons of dimethyl ether from methanol. Where do you buy crude methanol? Is it cost-effective to buy finished methanol? Can crude methanol be used as feed material in your process? What is the impurity content of methanol near you, and how much impact does it have on the catalyst? (To be honest, this is also my question. I really hope someone can help me. Thanks in advance).

The latest standards for dimethyl ether product specifications are the chemical industry standard "HG/T3934-2007 dimethyl ether" and the urban construction industry standard "CJ/T259-2007 dimethyl ether for urban gas" issued by the Ministry of Construction. Both standards can be downloaded from the forum. 99.9% grade is used in aerosols. However, the current domestic consumption of dimethyl ether in this field is only about 30,000 tons, and there are very few manufacturing companies. The large-scale dimethyl ether projects that have been put into production are basically fuel grade, and the requirement is 99%.

I don’t know whether the technical dimethyl ether product specification of Southwest Institute can reach 99%. I only know that Topsoe once provided an indicator of 98%. I actually also want to know what the actual indicators of other domestic factories can be? What are the design requirements? Thank you so much.

The 8th floor is very comprehensive. In fact, all these things must be taken into consideration when making. The Ministry of Fire Protection and the Ministry of Railways have regulations on fire separation distances, train transportation marshalling, etc. I once discussed this issue with our technical staff, but I can’t remember the specific regulations accurately. In terms of raw materials, most of them are methanol-DME co-production, otherwise the raw materials will be too affected. The storage time of methanol is relatively flexible, and the fire protection level is also low. However, DME products have a high fire protection level and are not suitable for long-term storage in large quantities. Generally, 2 weeks will be considered. Train loading requires a separate rail access. It seems that a separate loading platform is required? At present, the relatively mature technologies include those of China Southwest Institute, Japan's TEC and Denmark's Topsoe. Both Southwest and TEC have units that have been put into production. Topsoe currently has three DME units under construction/design in China, and has also built an 800,000-ton unit in Iran. In terms of the operating costs and consumption of the device, Topsoe is the lowest, and Toyo and Southwest are very close. There should be no problem with these three technical products reaching 99% purity.

At the end of 2007, two dimethyl ether exchange conferences were held almost simultaneously in Shanghai and Zhangjiagang. In the introductions of domestic and foreign industrialized dimethyl ether production equipment and industrial technology representatives at the conference, ENN's methanol gas-phase two-step dimethyl ether production process technology and Zhangjiagang's 200,000 tons/year unit were recognized by the participants as having the largest capacity, the lowest energy consumption, methanol consumption 1.40-1.41, steam consumption below 1.0, relatively good catalyst selection performance, and low tail gas emissions. And the comparable investment per unit is low. ——Two engineers from this unit attended the meeting.

For your reference, we just built an 800,000-ton device with a construction investment of about 200 million yuan.

100,000 tons/year methanol gas-phase catalytic dehydration to produce dimethyl ether. Investment estimates for each specialty are as follows. Professional process electrical automatic control civil engineering lighting and lightning protection totaling 10,000 yuan 1,360 17 360 262 31 20.3 million yuan Note: The above data does not include land acquisition costs

Maybe I’ve gone too far in what I said above. Everyone is discussing learning together.* , hope to learn together * , communicate with each other and improve together. If the unit upstairs needs to produce 100,000 tons of dimethyl ether, I would like to give some immature suggestions for reference (a bit presumptuous): If possible, can the total investment be broken down in more detail, which may make it easier for the owner to find problems? Can it be broken down according to process, piping, instrumentation, electrical, telecommunications, equipment, construction, structure, water supply and drainage, HVAC, general drawings, fire protection, safety, analysis, storage and transportation, etc. It is possible that the design institute will roughly follow this professional model in estimating and budgeting costs. For example, a chromatography set may not be cheap. Regarding investment in process equipment, each unit uses different technologies, catalyst prices are different, and construction requirements are different, so I won’t go into details. Many owners actually reduce investment by partially violating regulatory requirements. If it is a state-owned factory, be careful. Private enterprises may have lower investment, while state-owned factories may have some difficulties. Instrument investment: It depends on the specifications required by the owner for the device. Is the DCS from Zhejiang University or somewhere else? Is the metering system expensive? (I don’t know this.) The instruments vary greatly, haha, it’s hard to say. Electrical investment: It is necessary to consider whether it is a single-circuit incoming line or a dual-circuit power supply, the level of the external power supply, the specifications of the transformer, and the accidental diesel generator. Some units are acquiring land for construction in farmland, and it is likely to be single-circuit agricultural power supply. This needs to be paid attention to. The design institute may insist on the design specifications during the actual design. building structure investment: The scale of 100,000 tons is not considered small at present. The big ones have not been put into production, right? Main frame, boiler room (steam or thermal oil), coal pile plant (calculate the consumption and storage area), ash pile, (air separation and air pressure chamber? I don’t know if it is necessary), substation, MCC, control room (whether the fire alarm panel cabinet is placed here), cabinet room, fire pool, (whether accident fire water collection is needed), office, maintenance workshop (are there any? ) Guard room, canteen, sales invoicing management room (haha), methanol tank area, dimethyl ether tank area, car loading or train loading, whether it is necessary to set up a torch (we have discussed it many times before when designing, to be honest, I have no idea, the safety distance of the torch is still relatively large, if the production is expanded, it may still need to be considered, I may not be right, please forgive me). In addition, the discharge of production sewage may not be connected to the discharge pipe network (both are encountered, but it should not be a big problem, and the methanol head sewage may not be a big problem). Another little reference I would like to give to owners is: After all, it is a material similar to LPG, so you should give more thought to the safety distance, so as to save the design institute from not doing it when possible. When the owner actually enters the early stage of the project, he tries his best to include the feasibility study, project approval information, local hydrogeological and meteorological data, and, yes, the topographic map (be careful of the survey team taking away the owner's money, haha). However, often the owner cannot find a complete set of information because he does not know what is needed for the design. It is best to communicate clearly with the design institute in advance, and he has to write meeting minutes anyway. In addition, it is best for the owner’s management team to have people who really understand the methanol process (that is, the technical person in charge of the methanol plant is best, and there don’t seem to be many in the dimethyl ether plant yet), instrumentation, and equipment. It is best to have strong expertise in these majors, otherwise small problems may occur. In terms of project management, it is best for the owner's construction managers to first find out all the specifications and then learn * Of course, there may be some masters among the owners, who will make people stunned when the time comes. Procurement is a key issue. Owners often have tight construction deadlines. At the same time, the owner's preliminary work is not done well, and due to various reasons, the owner's personnel need to transfer some responsibilities (somewhat rude, I think that after giving money, each unit must break down the owner's risks. In fact, it may not be possible). This affects the progress of the manufacturer's return of data, and also affects the design progress. Let alone the quality of the procurement, it is useless to talk too much. The above questions are purely personal thoughts and things I have come across. There is nothing special about them. I just want to give some small reference to the owners of small-scale dimethyl ether plants. If there is any disrespect, please forgive me.

It just so happens that we are building 200,000 tons/year dimethyl ether. Because we have a methanol plant to support it, we plan to invest 70 million yuan.

The chemical industry standard "HG/T3934-2007 dimethyl ether" is not available in the forum and cannot be downloaded. I hope someone can upload it. Thank you!