{"id":1135,"date":"2026-04-24T07:04:50","date_gmt":"2026-04-24T07:04:50","guid":{"rendered":"https:\/\/rtooxidizer.com\/?post_type=product&p=1135"},"modified":"2026-04-24T07:04:50","modified_gmt":"2026-04-24T07:04:50","slug":"mto-waste-heat-boiler","status":"publish","type":"product","link":"https:\/\/rtooxidizer.com\/nl\/product\/mto-waste-heat-boiler\/","title":{"rendered":"MTO Waste Heat Boiler"},"content":{"rendered":"

<\/p>\n

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40\u2013260 t\/h<\/div>\n
Steam Capacity Range<\/div>\n<\/div>\n
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680\u2013750 \u00b0C<\/div>\n
Regenerator Flue Gas Temp.<\/div>\n<\/div>\n
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9.8 \/ 13.7 MPa<\/div>\n
HP Steam Pressure Options<\/div>\n<\/div>\n
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\u2265 92%<\/div>\n
Heat Recovery Efficiency<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

What Is an MTO Waste Heat Boiler?<\/h2>\n

The Ever-power MTO waste heat boiler<\/strong> is a high-pressure heat recovery unit designed specifically for methanol-to-olefins (MTO) process regenerator flue gas. In DMTO, SMTO and equivalent licensor schemes, spent catalyst is continuously burned clean in a regenerator, releasing a 680\u2013750 \u00b0C flue gas that carries residual CO, catalyst fines and trace hydrocarbons. Capturing that thermal energy as HP steam is the difference between a profitable olefins complex and one that bleeds utility costs.<\/p>\n

Flue gas enters the boiler, burns out residual CO in an engineered combustion chamber, and then cools across a radiant evaporator, superheater and economiser train \u2014 exiting at 180\u2013210 \u00b0C toward the flue gas cleaning island. A single 600 kt\/yr ethylene-propylene MTO unit typically produces 180\u2013230 t\/h of 9.8 MPa superheated steam, most of which drives a site steam turbine for power generation and residual process heating.<\/p>\n

Compared with a catalogue waste heat boiler or a retrofitted waste liquid incinerator heat recovery unit, the MTO-specific design handles the distinctive challenges of this service: higher-than-FCC flue gas dust loadings, different coke yield patterns, and tight coordination with downstream expander and scrubber systems. Every Ever-power MTO unit is sized against the licensor heat and mass balance, not a catalogue curve.<\/p>\n

\"MTO
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Integration with MTO & Coal Chemical Units<\/h2>\n
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MTO Regenerator<\/h3>\n

Coke burn-off flue gas with residual CO 0.3\u20131.5 vol%. Boiler CO chamber sized for complete oxidation at all load cases.<\/p>\n<\/div>\n

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Third-Stage Separator<\/h3>\n

Catalyst fines trap downstream of regenerator cyclones. Boiler inlet duct engineered to handle residual fines loading.<\/p>\n<\/div>\n

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Flue Gas Expander<\/h3>\n

Pressure letdown coordinated with expander swallowing capacity. Upset bypass duct built into every installation.<\/p>\n<\/div>\n

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Steam Turbine Driver<\/h3>\n

HP steam feeds condensing or back-pressure turbines for main air blower, cracked gas compressor or site power.<\/p>\n<\/div>\n

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Upstream Coal Gasification<\/h3>\n

Coordinated with upstream gasification steam balance on coal-to-olefins (CTO) complexes.<\/p>\n<\/div>\n

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Flue Gas Cleaning Island<\/h3>\n

Bag filter, dry sorbent injection and optional SCR downstream \u2014 designed to meet regional air quality standards.<\/p>\n<\/div>\n<\/div>\n

<\/p>\n

How the MTO Waste Heat Boiler Works<\/h2>\n

Five engineered stages carry regenerator flue gas from the MTO unit to the stack, extracting maximum HP steam to the site utility loop.<\/p>\n

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STEP 01<\/div>\n

Flue Gas Inlet & Distribution<\/h3>\n

Regenerator flue gas at 680\u2013750 \u00b0C enters through a refractory-lined duct with flow-conditioning vanes. Inlet dampers isolate the boiler for maintenance.<\/p>\n<\/div>\n

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STEP 02<\/div>\n

CO Burnout Chamber<\/h3>\n

A refinery-fuel-gas or tail-gas auxiliary burner holds \u2265 950 \u00b0C for 1.0 s minimum. CO is fully oxidised to CO\u2082 and unburnt hydrocarbons are destroyed.<\/p>\n<\/div>\n

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STEP 03<\/div>\n

Radiant Evaporator<\/h3>\n

Welded membrane water walls absorb radiant heat, dropping gas temperature from ~1,000 \u00b0C to about 550 \u00b0C. Natural circulation lifts steam to the HP drum.<\/p>\n<\/div>\n

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STEP 04<\/div>\n

Superheater Banks<\/h3>\n

Two-stage pendant superheaters lift steam temperature to 510\u2013540 \u00b0C. Inter-stage attemperator holds outlet temperature inside a \u00b1 3 \u00b0C band.<\/p>\n<\/div>\n

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STEP 05<\/div>\n

Economiser & Flue Gas Exit<\/h3>\n

Feedwater is preheated against flue gas cooled to 180\u2013210 \u00b0C. Gas exits to downstream bag filter, SCR and scrubber before the stack.<\/p>\n<\/div>\n<\/div>\n

<\/p>\n

Key Features & Engineering Advantages<\/h2>\n
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MTO-Specific Heat Balance<\/h3>\n

Designed against licensor heat balance curves for DMTO, SMTO and equivalent routes \u2014 not extrapolated from FCC catalogue data.<\/p>\n<\/div>\n

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Robust CO Burnout Chamber<\/h3>\n

Oversized residence time and staged air injection hold CO < 100 ppm across regenerator load swings from 70% to 110% of design.<\/p>\n<\/div>\n

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Erosion & Fouling Defence<\/h3>\n

Low gas velocity, sacrificial shields, retractable soot blowers and retubable modular banks \u2014 field-proven for MTO dust loadings that are 2\u20133\u00d7 typical FCC levels.<\/p>\n<\/div>\n

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HP Steam to Turbine Driver<\/h3>\n

Outlet steam matched to main air blower turbine and cracked gas compressor turbine inlet conditions, usually 9.8 MPa \/ 510 \u00b0C.<\/p>\n<\/div>\n

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Class A Pressure Parts<\/h3>\n

ASME Section I plus AS\/NZS 3788 dossier on all pressure parts. Welder qualification records and radiograph film package supplied as standard.<\/p>\n<\/div>\n

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Turn-Key or Module-Only<\/h3>\n

Delivered as a full EPC wrap or as a module-only scope for licensor-led project builds \u2014 or as a replacement of legacy MTO boiler<\/em> under a turnaround window.<\/p>\n<\/div>\n<\/div>\n

<\/p>\n

Technical Specifications<\/h2>\n

Capacity bands below match typical DMTO, SMTO and coal-to-olefins (CTO) unit scales. Every MTO waste heat boiler is ultimately sized to the licensor heat and mass balance.<\/p>\n

\n\n\n\n\n\n\n\n\n\n
Model<\/th>\nSteam Output (t\/h)<\/th>\nSteam Pressure (MPa)<\/th>\nSteam Temp. (\u00b0C)<\/th>\nMTO Unit Scale (kt\/yr ethylene+propylene)<\/th>\nEfficiency<\/th>\n<\/tr>\n<\/thead>\n
EP-MTO-40<\/strong><\/td>\n40<\/td>\n5.3<\/td>\n485<\/td>\n~180<\/td>\n\u2265 91%<\/td>\n<\/tr>\n
EP-MTO-90<\/strong><\/td>\n90<\/td>\n9.8<\/td>\n510<\/td>\n~300<\/td>\n\u2265 92%<\/td>\n<\/tr>\n
EP-MTO-150<\/strong><\/td>\n150<\/td>\n9.8<\/td>\n510<\/td>\n~500<\/td>\n\u2265 92%<\/td>\n<\/tr>\n
EP-MTO-200<\/strong><\/td>\n200<\/td>\n9.8 \/ 13.7<\/td>\n525 \/ 540<\/td>\n~700<\/td>\n\u2265 92.5%<\/td>\n<\/tr>\n
EP-MTO-260<\/strong><\/td>\n260<\/td>\n13.7<\/td>\n540<\/td>\n~900<\/td>\n\u2265 92.5%<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Performance & Compliance<\/h3>\n
\n\n\n\n\n\n\n\n\n\n\n
Parameter<\/th>\nEver-power Guarantee<\/th>\nReference Standard<\/th>\n<\/tr>\n<\/thead>\n
CO at Boiler Outlet<\/td>\n< 100 ppm<\/td>\nGB 31571 \/ US EPA<\/td>\n<\/tr>\n
NOx (with SCR)<\/td>\n< 100 mg\/Nm\u00b3<\/td>\nAUS state EPA<\/td>\n<\/tr>\n
Particulates<\/td>\n< 20 mg\/Nm\u00b3<\/td>\nAUS state EPA<\/td>\n<\/tr>\n
Steam Temperature Stability<\/td>\n\u00b1 3 \u00b0C at MCR<\/td>\nEN 12952-7<\/td>\n<\/tr>\n
Pressure-Part Design Life<\/td>\n200,000 h \/ 25 yr<\/td>\nEN 12952-3<\/td>\n<\/tr>\n
Pressure Code<\/td>\nASME Section I + U stamp<\/td>\nAS\/NZS 3788<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

<\/p>\n

Applications Across Coal Chemical & Olefin Industry<\/h2>\n
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DMTO \/ SMTO \/ S-MTO<\/h3>\n

Standard licensor MTO schemes producing ethylene and propylene from methanol. HP superheated steam supplies site turbines.<\/p>\n<\/div>\n

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Coal-to-Olefins (CTO)<\/h3>\n

Integrated coal gasification + methanol synthesis + MTO complexes. Steam balance tied to upstream gasifier waste heat recovery.<\/p>\n<\/div>\n

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MTP \u2014 Methanol to Propylene<\/h3>\n

Fixed-bed methanol-to-propylene routes with periodic regenerator duty. Alternative heat-recovery sizing for batch operation.<\/p>\n<\/div>\n

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Site Cogeneration<\/h3>\n

MTO boiler paired with condensing steam turbine for power generation \u2014 60\u2013120 MWe captured from regenerator flue gas alone.<\/p>\n<\/div>\n

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Future Australian CTO \/ MTO<\/h3>\n

Supporting feasibility studies for Australian coal-to-chemicals and biogenic-methanol-to-olefins concepts aligned to domestic gas and CCS roadmaps.<\/p>\n<\/div>\n

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Revamp & Debottleneck<\/h3>\n

Replacement of legacy MTO waste heat boilers where throughput uplift or emission retightening forces an upgrade.<\/p>\n<\/div>\n<\/div>\n

<\/p>\n

Why Choose Ever-power<\/h2>\n

Building a 200 t\/h MTO waste heat boiler is an exercise in patience, licensor coordination, and metallurgical discipline. Shortcuts at FEED reappear as tube failures in year three. These six engineering commitments separate the Ever-power build from a generic replacement of catalogue waste heat boiler<\/em> pressed into MTO service.<\/p>\n

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30+<\/div>\n
MTO and coal chemical waste heat boilers delivered across Asia-Pacific MTO \/ CTO complexes, with documented 8+ year operating data.<\/div>\n<\/div>\n
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DMTO<\/div>\n
direct MTO licensor-aligned heat balance experience; we have seen the dust-loading and coke-yield curves in practice, not just in a datasheet.<\/div>\n<\/div>\n
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CFD<\/div>\n
full-furnace CFD on every project \u2014 CO burnout residence time, flame shape, fines impingement and tube-wall heat flux all resolved pre-fabrication.<\/div>\n<\/div>\n
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13.7 MPa<\/div>\n
ultra-high-pressure experience on the largest MTO units with superheater and drum engineered for 540 \u00b0C continuous duty.<\/div>\n<\/div>\n
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SIL-2<\/div>\n
safety instrumented functions on CO afterburn, tube-metal over-temperature and drum-level \u2014 all IEC 61508 documented.<\/div>\n<\/div>\n
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TA<\/div>\n
turnaround support with inspection, spare parts staging and retubing teams. Planned T\/A work packages delivered on 28-day critical-path.<\/div>\n<\/div>\n<\/div>\n

Coal chemical and olefin industry credentials are documented on the Ever-power company page<\/a>, and the full boiler and waste liquid incinerator range is on the home page<\/a>.<\/p>\n

<\/p>\n

Asia-Pacific Project Case Studies Relevant to Australia<\/h2>\n
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CASE STUDY 01 \u2022 COAL-TO-OLEFINS COMPLEX<\/div>\n

600 kt\/yr MTO Unit \u2014 Regional Asia-Pacific<\/h3>\n

A CTO complex was commissioning a 600 kt\/yr DMTO unit and needed an HP waste heat boiler feeding a 90 MWe condensing turbine. The licensor heat balance was released late, compressing the original boiler vendor’s schedule and forcing a switch to a supplier with faster engineering.<\/p>\n

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Ever-power solution:<\/strong> EP-MTO-200 unit at 9.8 MPa \/ 525 \u00b0C with oversized CO chamber for first-year operating uncertainty. CFD-verified fines-impingement resistance.<\/p>\n

Result:<\/strong> Boiler first-fire on schedule despite 14-week licensor delay. Acceptance test 92.7% efficiency, CO 44 ppm, no tube failures in first 18 months.<\/p>\n<\/div>\n<\/div>\n

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CASE STUDY 02 \u2022 MTO REVAMP<\/div>\n

Legacy MTO Boiler Replacement \u2014 Asia-Pacific<\/h3>\n

A 500 kt\/yr MTO facility was operating a 10-year-old waste heat boiler with rising tube failure rate, forced outages and a downgrading CO emission profile. The owner wanted a direct replacement inside a single 45-day turnaround window.<\/p>\n

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Ever-power solution:<\/strong> Modular EP-MTO-150 unit with pre-assembled skid modules, bolt-up site erection, re-use of existing stack and feedwater connections.<\/p>\n

Result:<\/strong> Boiler replaced inside the 45-day window. First-year tube failures: zero. CO stack concentration reduced from 320 ppm to 54 ppm on acceptance testing.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

Frequently Asked Questions<\/h2>\n
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How is an MTO waste heat boiler different from an FCC CO boiler?<\/h3>\n

Same family, different operating envelope. MTO regenerator flue gas typically carries higher catalyst-fines loading than FCC and less CO. Coke yield patterns differ \u2014 so tube erosion design, CO chamber sizing and SOx exposure all shift. A boiler specified purely from FCC datasheets will underperform on MTO service within the first overhaul cycle.<\/p>\n<\/div>\n

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Which MTO licensors have you worked with?<\/h3>\n

We have supplied waste heat boilers alongside DMTO (Dalian Institute of Chemical Physics \/ SYN Energy), SMTO and equivalent licensor schemes. Detailed reference letters are available under mutual NDA during the tender evaluation phase.<\/p>\n<\/div>\n

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What steam pressure and temperature do typical MTO units need?<\/h3>\n

Most units specify 9.8 MPa superheated steam at 510 \u00b0C for main air blower and cracked gas compressor turbines. Larger and newer units are moving to 13.7 MPa at 540 \u00b0C for better cogeneration efficiency. Ever-power designs across the full range.<\/p>\n<\/div>\n

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How do you handle the high dust loading on MTO regenerator flue gas?<\/h3>\n

Four-step defence. First, inlet flow-conditioning vanes prevent stratified dust streams reaching the first bank. Second, gas velocity in the tube bundles is capped below 14 m\/s. Third, sacrificial erosion shields on leading tubes. Fourth, retractable soot blowers on a PLC-scheduled cycle. Annual inspection data shows tube wall-thickness loss under 0.12 mm\/yr in typical service.<\/p>\n<\/div>\n

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Is the boiler able to start up independently of the MTO unit?<\/h3>\n

Yes. The auxiliary firing burner rated for cold-start fuel-gas firing supports an independent warm-up before regenerator cut-in. This allows the HP steam header to be brought to pressure before the MTO unit starts up \u2014 critical for site-wide startup coordination.<\/p>\n<\/div>\n

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Can the unit be shipped to Australian or Asia-Pacific ports in modular form?<\/h3>\n

Yes. Large pressure parts ship as transportable modules inside oversize OOG containers. Steel structure, piping and platforms ship in standard 40ft containers. Typical project ships in 18\u201330 containers plus 3\u20136 flat-racks. Site erection is bolt-up with a small amount of field welding on the main headers.<\/p>\n<\/div>\n

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What warranty do you offer on a project this size?<\/h3>\n

Standard pressure-part warranty is 24 months from commissioning or 30 months from shipment. Performance guarantees on steam output, heat efficiency and CO emission are backed by site acceptance testing. An optional 5-year extended warranty covers the superheater and first-bank evaporator tubes when paired with an Ever-power service agreement.<\/p>\n<\/div>\n<\/div>\n

<\/p>\n

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Need an MTO Waste Heat Boiler Feasibility Study?<\/h3>\n

Send your MTO licensor heat balance, regenerator flue gas data and site steam header demand to sales@rtooxidizer.com<\/a> or use the contact page<\/a>. A feasibility study, CFD-based design concept and budget price will be returned within 15 working days \u2014 free of charge.<\/p>\n<\/div>\n


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