Mobile Tank & Vessel Degassing Services in Dallas
Does Your Dallas Facility Need Fast, Compliant Degassing?
Your tank is out of service and your team is on a tight schedule. You need a degassing contractor who shows up on time, knows what they are doing, and keeps your facility on the right side of TCEQ regulations without creating more headaches for your team.
Envent has been handling exactly these situations across Texas since 1992. Our EMTOS and EMECS systems destroy VOCs and H₂S at 99.9% efficiency, and every crew we send is OQ-qualified and EPA-compliant, whether it is a planned turnaround or an emergency callout.
EMTOS: Direct-Flame Thermal Oxidation
Our EMTOS units are recognized by the EPA as Best Available Control Technology (BACT) for Dallas-area tank degassing projects.
- Performance
Greater than 99.99% Destruction Removal Efficiency (DRE) on every project. - Operating Temperature
1,400°F or higher to break down VOCs, Benzene, H₂S, and Butadiene. - Capacity
250 to 4,500 CFM units available. - Speed
Clear a 150-ft tank in as little as 6 hours; a 250-ft tank in under 24 hours.
EMECS: High-Capacity Vapor Combustion
Our EMECS fleet carries the highest thermal destruction capacity available for high-volume tank refilling and degassing in North Texas.
- Flow Rates
Refill tanks at rates up to 20,000 barrels per hour. - Fleet
20 to 75 MMBTU/hr systems; the largest and newest fleet in North America.
Is Your Dallas Facility Covered for Title V and MACT Compliance?
If your facility operates under a Title V permit or faces MACT standards, the contractor you choose directly affects your ability to pass an agency audit. Envent systems are built and permitted to meet the strictest air quality rules across the US and Canada, and we handle the performance documentation your regulators will ask for.
Our engineering team works directly with your operations staff to make sure every project produces the certified technical logs and verified performance data your facility needs to stay in good standing with state and federal agencies.
EMTOS and EMECS meet the requirements of every major air quality jurisdiction, including:
- EPA NSPS & MACT (40 CFR Parts 60 & 63)
- SCAQMD Rule 1149 (South Coast AQMD Tank Degassing)
- TCEQ Chapter 115 (Texas Storage Tank Degassing)
- CARB Vapor Recovery Rules (California Air Resources Board)
- BAAQMD Regulation 8 (Bay Area AQMD)
- NJDEP Air Permits (New Jersey)
- LDEQ Air Quality Regulations (Louisiana)
- Washington DOE Air Quality Permits
- Ontario MECP Air Emissions (Canada)
- Canadian Environmental Protection Act (CEPA) Registry
Coverage extends to virtually every other state, provincial, and local air district across the US and Canada.
Need a permit fast? Our team has direct relationships with TCEQ and EPA regulators.
Need High-Capacity Emission Control for Your Dallas Operation?
High-Performance Thermal Oxidation
Our thermal oxidizers deliver the highest heat-input and flow-rate capacities in any mobile configuration, keeping your crew safe and your permit clean.
- Scale and Capacity
Units range from 250 CFM to 6,000 CFM with heat ratings from 1.5 MMBTU to 77 MMBTU. - Destruction Efficiency
Maintains temperatures at or above 1,400°F, achieving greater than 99.99% Destruction Removal Efficiency (DRE). - Compliance
Fully meets EPA BACT (Best Available Control Technology) and MACT standards on every project.
Does Your Dallas Vapor Stream Need Scrubbing Instead of Combustion?
When your vapor stream needs chemical neutralization, our scrubbing systems handle it using mechanical separation and liquid media to break down toxic gases like ammonia and H₂S.
- Recirculating Scrubbers
Built for high-concentration H₂S and acid gas removal from storage tanks and process vessels. - Passive Systems
Available for vacuum trucks, frac tanks, and temporary process upsets across North Texas operations. - Carbon Adsorption
Specialized media for final-stage VOC removal to meet non-detect requirements at your facility.
Does Your Dallas Contractor Complete a HAZOP Before Every Project?
- HAZOP Integration
Before any equipment arrives at your Dallas facility, our team completes a full Hazardous Operability Study to identify and reduce risks. - Hazardous Area Rating
Our Class 1, Division 2 certified systems are built for safe operation in explosive atmospheres across Zones 1 and 2. - Service Models
We offer Turnkey Operations with Envent technicians on site around the clock, or Long-Term Rentals for ongoing vapor control needs.
Our approach is built around your Dallas site conditions, and our equipment adjusts when things change without risking your crew or compliance record.
Does Your Dallas Tank Contain Benzene, H₂S, or Other Regulated Compounds?
Envent’s systems are permitted and built to handle the most difficult vapor streams found in Dallas-area refineries and petrochemical plants. From highly reactive volatile organic compounds like 1,3-Butadiene to toxic sulfur streams and hazardous air pollutants (HAPs), our equipment achieves 99.9% destruction efficiency across a wide range of chemical compounds.
- VOCs and BTEX Control
We treat Benzene, Toluene, Ethylbenzene, and Xylenes using a dual-stage approach combining thermal oxidation and specialized adsorption media. - H₂S and Sulfur Management
We remove Hydrogen Sulfide (H₂S) and Mercaptan odors through a two-part process of liquid scrubbing and high-temperature oxidation. - Regulated HAPs and Specialty Toxics
Our systems are built to destroy high-risk pollutants like Ethylene Oxide (EtO) and chlorinated hydrocarbons while preventing dioxin formation. - Pyrophoric and Reactive Species
We use chemical circulation and real-time monitoring to stabilize reactive iron sulfide scales before any equipment is opened to the atmosphere.
Why Do Dallas Refineries and Terminals Choose Envent First?
Envent has been handling complex tank degassing and vapor control projects across Texas since 1992. With the largest fleet of EMTOS and EMECS thermal oxidizers in North America and a 0.0 TRIR safety record, we give your Dallas facility the field performance and compliance documentation it needs on every project.
The Envent Approach
- Rapid Mobilization
24/7 emergency response to keep your Dallas facility moving and reduce unplanned downtime. - Total Compliance
Full adherence to EPA, SCAQMD, TCEQ, and LDEQ air quality mandates on every project. - Proven Results
99.99% DRE on VOCs, H2S, and high-hazard HAPs on every project. - Engineering Depth
Custom HAZOP-backed solutions for your site conditions.
Every project includes certified data logging and emissions monitoring your team can take directly to state and federal auditors.
Featured Case Studies
The Problem: A Gulf Coast refinery faced a critical reactor failure in its alkylation unit. With a 7-day restart window, the team had to degas a 90% hydrogen vapor stream under extreme conditions 200 PSIG and 320°F while adhering to a strict “no-flaring” mandate.
What We Did: Envent deployed the EMECS-77, the nation’s largest mobile emission control system. Our engineers combined high-capacity thermal oxidation with chemical scrubbing to neutralize toxic compounds. Using high-pressure heat exchangers and detonation arrestors, we safely managed the explosive hydrogen levels across three cleaning phases.
The Result: The reactor was back in service by Day 7, preventing millions in losses. The project achieved 99.9% destruction efficiency and 100% compliance with BWON and Refinery Sector Rules, all with zero safety incidents.
The Problem: A Southern California facility faced VOC leaks up to 10,000 ppmv from aging DAF cell lids. These fugitive emissions risked $25,000 daily fines under SCAQMD Rule 1173. Temporary carbon canisters had failed to stop the leaks, leaving the site open to regulatory action.
What We Did: Envent installed a permanent, plant-integrated thermal oxidizer system. By using motorized dampers to maintain continuous negative pressure across all DAF cells, the system captures vapors before they can escape. The automated, PLC-driven unit was tied into plant utilities to lower fuel costs and allow for 24/7 unmanned operation.
The Result: The site achieved 100% elimination of fugitive emissions, with post-installation tests recording 0 ppmv at every seal. The facility passed all inspections and removed the DAF cells from mandatory monitoring lists. This long-term solution reduced labor costs and is built for 20 years of service.
Tank and Vessel Degassing in Dallas: Frequently Asked Questions
What is mobile tank degassing and when does a Dallas facility need it?
Mobile tank degassing removes flammable, toxic, or regulated vapors from a storage tank or vessel before inspection, cleaning, or repair. Dallas refineries and terminals typically need it during planned turnarounds, emergency shutdowns, or API inspections. Envent deploys fully self-contained mobile systems directly to your site. Head over to our degassing and vapor control system to see how we handle it.
How does Envent's EMTOS differ from a standard thermal oxidizer?
The EMTOS is recognized by the EPA as Best Available Control Technology (BACT), operating at 1,400°F or higher to achieve greater than 99.99% DRE. Every unit comes with OQ-qualified technicians, certified data logging, and real-time emissions monitoring. Our thermal oxidizer fleet covers projects from 250 CFM to 6,000 CFM. Take a look at our full thermal oxidizer fleet to see what we bring to your Dallas project.
Does Envent handle TCEQ permitting for Dallas projects?
Yes. Envent carries pre-approved equipment profiles and works directly with TCEQ regulators to move your permit along faster. Our engineers provide the technical documentation needed to satisfy TCEQ Chapter 115 requirements for storage tank degassing. Our compliance section covers how we handle permits and regulatory documentation on every project.
What vapor compounds can your Dallas systems treat?
Our systems handle Benzene, Toluene, Ethylbenzene, and Xylene (BTEX), H2S, 1,3-Butadiene, Ethylene Oxide, Ammonia, Mercaptans, and chlorinated hydrocarbons. For streams containing pyrophoric iron sulfide scales, we use chemical circulation and real-time monitoring before any equipment is opened. The full scope of what we treat is on our thermal oxidizers.
How quickly can Envent respond to an emergency degassing call in Dallas?
Can Envent handle tanks with high-concentration H₂S?
Yes. We pair thermal oxidation with recirculating chemical scrubbers for high-concentration sour gas streams. Our crews follow full OSHA confined space protocols under 29 CFR 1910.146, and our systems are rated for Class 1, Division 2 environments. The full details on how we handle H2S and odor control are on our Scrubbers and Odor Control.
What safety standards does Envent follow on Dallas projects?
Does Envent offer long-term vapor control rentals in Dallas?
Yes. We offer long-term rental options with PLC-controlled systems that run unmanned around the clock, tied directly into your facility utilities. Turnkey operation packages are also available with Envent technicians managing the system on your behalf. Your team can get in touch through our request a quote and we will take it from there.
Can Envent support refinery turnarounds in the Dallas and North Texas area?
Yes. Envent has been supporting Texas refinery turnarounds since 1992, providing mobile vapor control crews that keep your schedule on track without creating compliance problems for your team. Our turnaround services cover tank degassing, vessel cleaning support, and emergency vapor abatement all under one contractor scope. Planning a turnaround in Dallas? Our Refinery Turnaround Vapor Control walks you through what we handle.
How does Envent document emissions performance for Dallas facility audits?
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